General Science Biology MCQs with Answers for Competitive Exams
Prepare for competitive exams with the best collection of General Science Biology MCQs with Answers. This quiz and practice set includes important Biology multiple choice questions covering topics like Cell Structure, Human Body, Plants, Animals, Genetics, Diseases, Nutrition, Reproduction, Ecology, and more.
These Biology MCQs are highly useful for exams such as SSC, UPSC, APSC, Railway, Banking, Assam Direct Recruitment, Police, TET, CTET, and other state-level competitive exams. Each question comes with accurate answers to help students improve their General Science knowledge and exam preparation.
Whether you are a school student, college student, or competitive exam aspirant, these Biology objective questions will help you practice quickly and boost your confidence. Regular practice of Biology MCQs can improve your speed, accuracy, and understanding of important science concepts.
1. Bowman’s Capsule’ works as a part of the functional unit of which among the following human physiological system?
(A) Circulatory System
(B) Respiratory System
(C) Excretory System
(D) Reproductive System
Correct Answer: (C) Excretory System
Answer Explanation:
Bowman’s Capsule is related to the process of ‘Ultrafiltration’ in the functional units of kidneys called ‘nephrons’.Therefore, it is a part of the excretory system.
2. Plants which are adapted to grow in soils containing high concentration of salt are known as:
(A) Xerophytes
(B) Mesophytes
(C) Halophytes
(D) Thallophytes
Correct Answer: (C) Halophytes
3. Which among the following have a ‘mixed heart’ , that is the heart in which the oxygenated and the deoxygenated blood is mixed?
(A) Birds
(B) Fishes
(C) Reptiles
(D) Nematodes
Correct Answer: (C) Reptiles
Answer Explanation:
Reptiles and Amphibians have a mixed heart.
4. Saffron is obtained from which among the following parts of the plant?
(A) Stigma
(B) Anther
(C) Stamen
(D) Pollen
Correct Answer: (A) Stigma
5. The bacterium ‘Escherichia coli’ is found mainly in:
(A) Human Intestine
(B) Pteridophytes
(C) Root Nodules of leguminous plants
(D) Paddy fields for nitrogen fixation
Correct Answer: (A) Human Intestine
6. Which among the following is not a ‘hereditary’ disease?
(A) Thalassemia
(B) Colour-Blindness
(C) Haemophilia
(D) Leukemia
Correct Answer: (D) Leukemia
7. Human Papillomavirus is related to which of the following diseases?
(A) Prostate Cancer
(B) Cervical Cancer
(C) Lymphatic Filariasis
(D) Leukemia
Correct Answer: (B) Cervical Cancer
8. The nutritional supplements Spirulina, Chorella and the Vitamin-C supplement, Dunaliella are actually :
(A) Algae
(B) Lichens
(C) Probiotics
(D) Bryophytes
Correct Answer: (A) Algae
9. Anemophily’ is pollination by :
(A) Birds
(B) Wind
(C) Ants
(D) Bats
Correct Answer: (B) Wind
Answer Explanation:
Abiotic pollination refers to situations where pollination is mediated without the involvement of other organisms. The most common form of abiotic pollination, anemophily, is pollination by wind. This form of pollination is predominant in grasses, most conifers, and many deciduous trees. Of the 20% of abiotically pollinated species, 98% are anemophilous and 2% hydrophilous, being pollinated by water.
10. Pest-resistant cotton commonly known as ‘Bt-Cotton’ is genetically engineered by inserting a gene from a:
(A) Bacterium
(B) Virus
(C) Microalgae
(D) Protist
Correct Answer: (A) Bacterium
11. Penicillin’ which is used as an antibiotic is obtained from :
(A) Bacteria
(B) Fungi
(C) algae
(D) Lichens
Correct Answer: (B) Fungi
12. The instrument that measures arterial blood pressure is known as :
(A) Pyknometer
(B) Hypsometer
(C) Sphygmoscope
(D) Sphygmomanometer
Correct Answer: (D) Sphygmomanometer
13. Meg-1 is an imprinted gene which finds expression only from maternal chromosomes which regulates the transfer of nutrients from the plant to the seed. This gene has been discovered in :
(A) Maize
(B) cotton
(C) jute
(D) Sugarcane
Correct Answer: (A) Maize
14. Which of the following statements is NOT true regarding the Vitamin C?
(A) Only Vitamin C is to be taken externally, all others are produced in the human body.
(B) Vitamin C is the only vitamin which is also a hormone.
(C) Scurvy is caused by the deficiency of Vitamin C
(D) Vitamin C is a water-soluble vitamin.
Correct Answer: (B) Vitamin C is the only vitamin which is also a hormone.
15. Which of the following tests is used for the diagnosis of ‘Colour-Blindness’ in people ?
(A) Ishihara Test
(B) Widal Test
(C) ELISA test
(D) Rorschach test
Correct Answer: (A) Ishihara Test
16. Which of the following artificial sweeteners is not broken down by the body and therefore it is non-caloric (no-calorie sweetener) :
(A) Aspartame
(B) Saccharin
(C) Sucralose
(D) Cyclamate
Correct Answer: (C) Sucralose
Answer Explanation:
Sucralose is an artificial sweetener. The majority of ingested sucralose is not broken down by the body and therefore it is non-caloric. Sucralose is approximately 600 times as sweet as sucrose (table sugar), twice as sweet as saccharin, and 3 times as sweet as aspartame. It is stable under heat and over a broad range of pH conditions. Therefore, it can be used in baking or in products that require a longer shelf life. The commercial success of sucralose-based products stems from its favorable comparison to other low-calorie sweeteners in terms of taste, stability, and safety.It is used because it is a no-calorie sweetener, and does not promote dental cavities, is safe for consumption by diabetics, and does not affect insulin levels.
17. The Science of using mechanical devices with human muscle skeleton and nervous systems to assist or enhance motor control lost by trauma, disease or defect is called:
(A) Gerontechnology
(B) Biomechatronics
(C) Orthotics
(D) Bionics
Correct Answer: (B) Biomechatronics
Answer Explanation:
Biomechatronics is an applied interdisciplinary science that aims to integrate mechanical elements, electronics and parts of biological organisms. Biomechatronics includes the aspects of biology, mechanics, and electronics. It also encompasses the fields of robotics and neuroscience. The goal of this science is to make devices that interact with human muscle, skeleton, and nervous systems. The end result is that the devices will help with human motor control that was lost or impaired by trauma, disease or birth defects.
18. Which among the following is not among Micronutrients required for plants?
(A) Molybdenum
(B) Magnesium
(C) Manganese
(D) Zinc
Correct Answer: (B) Magnesium
Answer Explanation:
In order for a plant to grow and thrive, it needs a number of different chemical elements. The most important are:Carbon, hydrogen and oxygen – Available from air and water and therefore in plentiful supply Nitrogen, phosphorus, potassium (a.k.a. potash) – The three macronutrients and the three elements you find in most packaged fertilizers Sulfur, calcium, and magnesium – Secondary nutrients Boron, cobalt, copper, iron, manganese, molybdenum and zinc – Micronutrients
19. How does calcium carbide ripen mangoes?
(A) It reacts with moisture and releases Ethylene
(B) It reacts with moisture and releases Acetaldehyde, which in turn releases ethylene
(C) It reacts with starch and releases Acetylene
(D) It reacts with moisture and releases Ethyne
Correct Answer: (A) It reacts with moisture and releases Ethylene
Answer Explanation:
reasons of safe transportation of fruits, mangoes, bananas etc are picked before they ripen fully. Slightly green harvested mangoes are subjected to small containers of calcium carbide (CaC2) with a plastic covering. CaC2 reacts with the moisture in the air to release acetylene (or ethyne) gas as follows:CaC2 + 2 H2O → C2H2 + Ca(OH)2This option may give you slightest confusion if you don’t know the difference between Ethylene and Ethyne (Acetylene). Both are chemical substances produced by fruits to accelerate the normal process of fruit maturation — is a ripening hormone. Ethylene is C2H4 and has a carbon-carbon double bond. Acetylene is C2H2 and has a carbon-carbon triple bind. Acetylene contains more energy and burns hotter than ethylene. Ethylene is a gaseous compound , Acetylene is the chemical compound , which is the simplest alkyne and is also a hydrocarbon while Ethylene is the simplest alkene and classified as an unsaturated hydrocarbon.
20. Which among the following is the edible part in Rice?
(A) Fruit
(B) Cotyledons
(C) Endosperm
(D) Embryo
Correct Answer: (C) Endosperm
Answer Explanation:
Most of the essential micronutrients are almost exclusively stored in the husk, aleurone and embryo of rice, which are removed during the polishing process. Polishing of rice is required as the oil-rich aleurone layer turns the seed rancid upon storage and therefore making rice unsuitable for consumption. Consequently, the rice endosperm that comprises the edible part of rice for humans lacks or contains only small amount of key micronutrients (e.g., iron, zinc, protein, provitamin A, and other vitamins) that are essential for a healthy diet. Considering the facts above and severity of widespread micronutrient malnutrition, iron biofortification in rice endosperm is a promising strategy to overcome iron deficiency effectively.
21. Late Hargobind Khorana had received Nobel Prize in physiology in 1968, for work on which among the following?
(A) Mechanisms of the action of hormones
(B) Chemical Structure of antibodies
(C) Interpretation of the genetic code
(D) Structural and functional organization of the cell
Correct Answer: (C) Interpretation of the genetic code
22. A person with “Bombay Blood group” can receive blood from a person who is from____?
(A) A Group or B Group
(B) AB Group
(C) O Group
(D) None of them
Correct Answer: (D) None of them
Answer Explanation:
Bombay Blood Group is an extremely rare ABO group, called so because it was first discovered among some people in Bombay. Their red cells lack ABH antigens and their sera contain anti-A and anti-B and anti-H. The anti-H would not be detected in the ABO group but would be detectable in pretransfusion tests. People who have Bombay phenotype can donate to any member of the ABO blood group system (unless some other blood factor gene, such as Rhesus, is incompatible), but they cannot receive any member of the ABO blood group system`s blood (which always contains one or more of A and B and H antigens), but only from other people who have Bombay phenotype
23. What is the average life of the Red Blood corpuscles?
(A) 100-120 days
(B) 120-140 days
(C) 80-95 days
(D) 70-85 days
Correct Answer: (A) 100-120 days
24. “Daps one” immunotherapy is related to which among the following diseases?
(A) AIDS
(B) Tuberculosis
(C) Leprosy
(D) Malaria
Correct Answer: (C) Leprosy
25. What is PRINT (Particle Replication in Non-wetting Templates) Technology ?
(A) It’s a technology related to genetic engineering and refers to duplication of the DNA codes
(B) It’s a technology related to climate change and refers to a new technique of combating air pollution
(C) It’s a new technology related to synthesis of artificial blood
(D) None of them
Correct Answer: (C) It’s a new technology related to synthesis of artificial blood
26. The vaccine of which of the following diseases was not included in the Expanded Programme on Immunization (EPI) initiated by the Government of India in 1978?
(A) Polio
(B) Diphtheria
(C) Measles
(D) Tuberculosis
Correct Answer: (C) Measles
Answer Explanation:
The Expanded Programme on Immunization (EPI) was initiated in India in 1978 with the objective to reduce morbidity and mortality from diphtheria, pertussis, tetanus, poliomyelitis and childhood tuberculosis by providing immunization services to all eligible children and pregnant women by 1990. Measles vaccine was included when the EPI was accelerated by launching the Universal Immunization Programme (UIP) in 1985-6. Approximately half of all infants now receive complete primary immunization with diphtheria, polio and tetanus (DPT), oral polio vaccine (OPV) and BCG vaccine.
27. The term Cyberknife is most closely associated with which among the following?
(A) Magnetic Resonance
(B) Cancer Surgery
(C) Software Security
(D) Remote sensing
Correct Answer: (B) Cancer Surgery
28. Deposition of which among the following in the joints, causing inflammation is reason of Gout, one of the forms of arthritis?
(A) Lactic Acid
(B) Oxalic Acid
(C) Acetic Acid
(D) Uric Acid
Correct Answer: (D) Uric Acid
Answer Explanation:
Gout is caused by deposition of uric acid crystals in the joint, causing inflammation. There is also an uncommon form of gouty arthritis caused by the formation of rhomboid crystals of calcium pyrophosphate known as pseudogout. In the early stages, the gouty arthritis usually occur in one joint, but with time, it can occur in many joints and be quite crippling. The joints in gout can often become swollen and lose function.
29. The phenomenon in which seeds germinate and seedlings grow while still attached to their mother plant before dropping down to establish themselves or be transported elsewhere, is most commonly found in which among the following plants?
(A) Allium cepa
(B) Rhizophora
(C) Solanum tuberosum
(D) Solanum melongena
Correct Answer: (B) Rhizophora
Answer Explanation:
Allium cepa is onion.
Solanum tuberosum is potato,
Solanum melongena is Brinjal.
The phenomenon given in this question is shown by Mangrove Plants and is known as Vivipary and Rhizophora belongs to that category.
30. The hormonal activities of which of the following substances were discovered while studying “foolish seedling” disease in rice?
(A) Cytokinins
(B) Ethylene
(C) Auxins
(D) Gibberellin
Correct Answer: (D) Gibberellin
31. The useful part of Zingiber officinale is ____?
(A) Roots
(B) Rhizome
(C) Leaves
(D) fruits
Correct Answer: (B) Rhizome
32. Beta-Keratin is found in which among the following in abundance?
(A) Fishes
(B) Reptiles
(C) Mammalians
(D) Amphibians
Correct Answer: (B) Reptiles
33. Antipyretic medicines are used for which among the following purposes?
(A) In fever
(B) In Diarrhea
(C) In Cough
(D) In Allergy
Correct Answer: (A) In fever
34. A health problem which is characterized by inability of the bone marrow to produce the red blood cells is placed in which among the following groups?
(A) Anuria
(B) Aplastic Anemia
(C) Pernicious Anemia
(D) Aplasia
Correct Answer: (B) Aplastic Anemia
35. In context with the connective tissues, which among the following connect join Bones to Bones?
(A) Ligaments
(B) Tendons
(C) Reticular fibers
(D) Raphe
Correct Answer: (A) Ligaments
36. Brachytherapy is commonly used as an effective treatment for cervical, prostate, breast, and skin cancer in many parts of the world. Why Brachytherapy is an offshoot of which among the following forms of Cancer Treatment?
(A) Radiotherapy
(B) Chemotherapy
(C) Surgery
(D) None of them
Correct Answer: (A) Radiotherapy
37. From the point of view of evolution of living organisms, which of the following set of animals is a correct sequence of evolution?
(A) Whale, Kangaroo, Echidna
(B) Echidna, Whale, Kangaroo
(C) Kangaroo, Whale, Echidna
(D) Echidna, Kangaroo, Whale
Correct Answer: (D) Echidna, Kangaroo, Whale
38. Which among the following live tissues of the Human Eye does not have blood vessels?
(A) Sclera
(B) Cornea
(C) Choroid
(D) Iris
Correct Answer: (B) Cornea
39. Which among the following is involved in the Research on Desert Flora and Fauna?
(A) CAZRI
(B) SIPRI
(C) AFRI
(D) CRIJ
Correct Answer: (A) CAZRI
Answer Explanation:
Central Arid Zone Research Institute CAZRI at Jodhpur is involved in the research on desert flora and fauna
40. The Indian Pipe Plant or Monotrapa can be best placed in which among the following groups?
(A) Parasite
(B) Saprophyte
(C) Insectivorous
(D) Lithophyte
Correct Answer: (B) Saprophyte
Answer Explanation:
Pipe Plant is a total saprophyte i.e. thrives on dead or decayed organic matter
41. The monocarpic plants produce flowers only ________?
(A) Once in a year
(B) Once in a season
(C) Once in lifetime
(D) One flower per plant
Correct Answer: (C) Once in lifetime
42. Which among the following is the correct meaning of Phyllotaxy?
(A) Classification of plants as per the leaves structure
(B) The manner of arrangement of leaves in stem or branch
(C) The manner the leaves fall from the branches
(D) The anatomy of leaves in angiosperms
Correct Answer: (B) The manner of arrangement of leaves in stem or branch
43. In which of the following insects, a pigment called luciferin is found?
(A) Housefly
(B) Firefly
(C) Sandfly
(D) Fruitfly
Correct Answer: (B) Firefly
44. A plant belonging to which of the following groups would show least adaptation to marine water?
(A) Pteridophytes
(B) Gymnosperms
(C) Angiosperms
(D) Bryophytes
Correct Answer: (C) Angiosperms
45. A treatment with which among the following plant hormones would prevent water loss from the plant leaves, by reducing transpiration, in times of low water availability?
(A) Ethylene
(B) Abscisic Acid
(C) Gibberelic Acid
(D) Auxin
Correct Answer: (B) Abscisic Acid
46. A tablet of which among the following Vitamins should be advised to be used after purification of water by Iodine as a disinfectant?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Correct Answer: (C) Vitamin C
47. Who among the following scientists is known for devising four criteria designed to establish a causal relationship between a causative microbe and a disease?
(A) Louis Pasteur
(B) Emil Behring
(C) Ivan Pavlov
(D) Robet Koch
Correct Answer: (D) Robet Koch
Answer Explanation:
Dr. Robert Koch was a German (Prussian) physician. In 1877 he isolated Bacillus anthracis (causative agent of Anthrax) . He also isolated Tuberculosis bacillus (Causative agent of TB) and Vibrio cholera (causative agent of Cholera). He is also known to develop Koch’s postulates, the four criteria designed to establish a causal relationship between a causative microbe and a disease. He was awarded the Nobel Prize in Physiology or Medicine for his tuberculosis findings in 1905.
48. A combination of several medicines called SHREZ is used in the treatment of which among the following diseases?
(A) HIV/ AIDS
(B) Diphtheria
(C) Tuberculosis
(D) Malaria
Correct Answer: (C) Tuberculosis
49. The most popular Zero Calorie sugar substitutes in the market are made up of Sucralose, as an artificial sweetner. Why sucralose does not have calories?
(A) Because the Sucralose is 600 times more sweet than Sucrose (Natural Sugar) and thus its low quantity gives same taste but zero calories when it is digested in the body.
(B) Because the chemical composition of Sucralose is such that its oxidation gives less calories in body compared to the Sucrose.
(C) Because Sucralose is not a Carbohydrate
(D) Because Sucralose is not digested in the body
Correct Answer: (D) Because Sucralose is not digested in the body
50. As per the WHO definition, within how many days of the termination of pregnancy, the death of a woman is counted in the Maternal Mortality?
(A) 36 Days
(B) 42 Days
(C) 56 Days
(D) 60 Days
Correct Answer: (B) 42 Days
51. Which among the following have been found to produce a protein called Defensin-1, which has been found potential to develop drugs for antibiotic resistant bacteria?
(A) Codfish
(B) Cuttle Fish
(C) Honey bee
(D) Domestic Fly
Correct Answer: (C) Honey bee
Answer Explanation:
Defensin-1 is the name of a protein, which has the property of resistance of epithelial surfaces to microbial colonization. This protein has the potential to develop drugs for antibiotic resistant bacteria. Honey bees make this protein and adds to honey and the scientists at the Academic Medical Centre, Amsterdam say that one day the drugs developed by Honey containing Defensin-1 , could combat antibiotic-resistant infections.
52. The Gram Positive Bacteria can be identified by the Gram staining because of the following reasons?
(A) The cell walls have more lipids compared to peptidoglycan
(B) The Cells walls have more Peptidoglycan compared to Lipids
(C) The Cells membrane has more fatty acids
(D) The plasma has Peptidoglycans
Correct Answer: (B) The Cells walls have more Peptidoglycan compared to Lipids
Answer Explanation:
The cell wall which is made up of Peptidoglycan as well as lipids gets violet due to the reaction of the CV+. After the decolorization with alcohol, the lipids gets dissolved and the bacteria with higher Peptidoglycan remain violet. These are called Gram Positive bacteria.
53. The Bovine spongiform encephalopathy (BSE) is commonly known as _______?
(A) Foot & Mouth Disease
(B) Mad Cow Disease
(C) Fog fever
(D) Creutzfeldt-Jakob disease
Correct Answer: (B) Mad Cow Disease
54. The natural Pacemaker in the Human Heart is located in the SA node which is present in which among the following chambers?
(A) Right Auricle
(B) Left Auricle
(C) Right Ventricle
(D) Left Ventricle
Correct Answer: (A) Right Auricle
55. Overdose of antibiotics will cause the suppression of synthesis of which among the following vitamins in human body?
(A) Vitamin A
(B) Calciferol
(C) Vitamin K
(D) Biotin
Correct Answer: (D) Biotin
56. Who among the following first synthesized “gene” in a laboratory?
(A) Arthur Kornberg
(B) Hargobind Khorana
(C) Gregor Mendel
(D) Watson and crick
Correct Answer: (B) Hargobind Khorana
57. Which among the following is correct definition of Bacteriophage?
(A) A Bacteria that destroys Virus
(B) A Virus that destroys Bacteria
(C) A Bacteria that destroys another bacteria
(D) A Bacteria that destroys Fungi
Correct Answer: (B) A Virus that destroys Bacteria
58. A particular cell organelle is sometimes referred certain enzymes that can break down the cell components or even the whole cell. which one of the following is such an organelle?
(A) Lysosome
(B) Mesosome
(C) Phagosome
(D) Ribosome
Correct Answer: (A) Lysosome
59. The disorder “Pityriasis simplex capillitii ” is most commonly known as which among the following?
(A) Tulip fingers
(B) Dandruff
(C) Baldness
(D) Eczema
Correct Answer: (B) Dandruff
60. What is the number of the Chromosomes affected by Turner syndrome?
(A) 44
(B) 45
(C) 46
(D) 47
Correct Answer: (B) 45
61. Ornithophily refers to the pollination through which among the following?
(A) Wind
(B) Insects
(C) Birds
(D) Water
Correct Answer: (C) Birds
62. The insect “Apis mellifera” is commonly known as which among the following?
(A) Sand Fly
(B) Domestic Fly
(C) Honey Bee
(D) Spider
Correct Answer: (C) Honey Bee
63. Which among the following element in the human body / organ makes the main basis of working of the MRI (Magnetic resonance imaging)?
(A) Nitrogen
(B) Hydrogen
(C) Calcium
(D) Sodium
Correct Answer: (B) Hydrogen
64. The term “Halitosis” denotes which among the following?
(A) Bad hearing
(B) bad breathe
(C) Baldness
(D) Excessive Sweating
Correct Answer: (B) bad breathe
65. The term “Gypsophils” is associated with the people who have liking for which among the following?
(A) Vultures
(B) Eagles
(C) Hawks
(D) Falcons
Correct Answer: (A) Vultures
66. Bubo is the scientific name of which of the following species?
(A) Hen
(B) Peacock
(C) Eagle
(D) Owl
Correct Answer: (D) Owl
67. Which among the following Vitamin is added to the milk in some countries as it is lost during the process of Fat Removal (Skimming)?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Correct Answer: (A) Vitamin A
68. Which among the following diseases is very rare in women compared to the men affected with the same disorder?
(A) Osteoporosis
(B) Color blindness
(C) Nyctalopia
(D) Down Syndrome
Correct Answer: (B) Color blindness
69. Which among the following disease has the minimum incubation period, comparing to other ones?
(A) Small Pox
(B) Influenza
(C) Measles
(D) Mumps
Correct Answer: (B) Influenza
Answer Explanation:
Influenza (1-2 days) , rest are 6-15 days
70. Deficiency of Vitamin D leads to lack of absorption of which of the following minerals?
(A) Iodine
(B) Phosphorus
(C) Calcium
(D) Iron
Correct Answer: (C) Calcium
71. Which among the following indicates Vitamin B12?
(A) Niacin
(B) Pyridoxine
(C) Cobalamine
(D) Thiamine
Correct Answer: (C) Cobalamine
72. Hodophobia is the fear of which of the following?
(A) Sleeping
(B) Travel
(C) Drugs
(D) Cattle
Correct Answer: (B) Travel
73. “Pratham” the first animal born in 1990 by the IVF (In vitro Fertilization) at the National Dairy Research Institute, Karnal was a ________ ?
(A) Cow
(B) Buffalo
(C) Sheep
(D) Goat
Correct Answer: (B) Buffalo
74. Genetic Modification (GM) technique RIDL was in news. RIDL is being developed for combating which of the following disease?
(A) Swine Flu
(B) Malaria
(C) Cancer
(D) AIDS
Correct Answer: (B) Malaria
75. Which among the following acid is NOT a Vitamin ?
(A) Folic Acid
(B) Oleic Acid
(C) Pantothenic Acid
(D) Ascorbic Acid
Correct Answer: (B) Oleic Acid
76. Which among the following is found in a Bacteriophage?
(A) only RNA
(B) only DNA
(C) Both RNA & DNA
(D) Either RNA or DNA
Correct Answer: (D) Either RNA or DNA
77. The correct group of animals that suffer from the “Foot & Mouth ” disease is as follows:
(A) Only Cattle
(B) Cattle & Sheeps
(C) Cattle and Pigs
(D) Cattle, Sheeps and Pigs
Correct Answer: (D) Cattle, Sheeps and Pigs
78. Turmeric belongs to from which one of the following family of plants?
(A) Radish
(B) Ginger
(C) Onion
(D) Clove
Correct Answer: (B) Ginger
79. For which of the following diseases first successful vaccination was developed (it is caused by Variola virus)?
(A) Cowpox
(B) Chickenpox
(C) Smallpox
(D) Polio
Correct Answer: (C) Smallpox
80. In which of the following era began the Self replicating RNA molecules on Earth?
(A) Basin Era
(B) Nectarian Era
(C) Early Imbrian
(D) Cryptic Era
Correct Answer: (A) Basin Era
81. What fraction of Body’s calcium is stored in Bones and teeth?
(A) 85%
(B) 90%
(C) 94%
(D) 99%
Correct Answer: (D) 99%
82. Which among the following is NOT a true bast fiber?
(A) Jute
(B) Hemp
(C) Flax
(D) Cotton
Correct Answer: (D) Cotton
83. The metals in which among the following groups are required in maximum quantities in a living organism?
(A) Potassium, Manganese, Molybdenum, Calcium
(B) Potassium, Molybdenum, Copper, Calcium
(C) Pottassium,Sodium, Magnesium, Calcium
(D) Sodium, Magnesium, Copper, Manganese
Correct Answer: (C) Pottassium,Sodium, Magnesium, Calcium
84. Which among the following helps to determine the character of a cell?
(A) Nucleus
(B) Chromosomes
(C) Genes
(D) Plasma
Correct Answer: (C) Genes
85. What name has been given to the fear of crossing roads?
(A) Arthrophobia
(B) Atychiphobia
(C) Aichmophobia
(D) Agyrophobia
Correct Answer: (D) Agyrophobia
86. What is the average life of Red Blood cells in our body?
(A) 30-40 days
(B) 70-80 days
(C) 100-120 days
(D) 160-180 days
Correct Answer: (C) 100-120 days
87. Which of the following plant growth hormone was recognized by Japanese scientists?
(A) Auxin
(B) Gibberellins
(C) Abscisic acid
(D) Cytokinin
Correct Answer: (B) Gibberellins
Answer Explanation:
Gibberellins, first recognized in 1926 by a Japanese scientist, Eiichi Kurosawa. He was studying foolish seedling disease in Rice called as bakanae
88. Which among the following does not fall in the category of morbid fear or Phobia?
(A) Claustrophobia
(B) Photophobia
(C) Algophobia
(D) Anthophobia
Correct Answer: (B) Photophobia
Answer Explanation:
Photophobia is not a fear. It is excessive sensitivity to light and the aversion to sunlight or well-lit places,
Claustrophobia is fear of confined places,
Algophobia is fear of pain,
Anthophobia is fear of flowers,
89. Which among the following is the correct location of pyloric sphincter in human body?
(A) between Oral cavity and esophagus
(B) between Esophagus and Stomach
(C) between Stomach and duodenum
(D) between duodenum and Jejunum
Correct Answer: (C) between Stomach and duodenum
90. In which of the following, the cellular power plants – Mitochondria are absent ?
(A) Red algae
(B) Green Algae
(C) Bacteria
(D) Brown Algae
Correct Answer: (C) Bacteria
Answer Explanation:
The mitochondria are common in Eukaryotic cells. Bacteria is Prokaryotic
91. Which among the following is essential gene material ?
(A) Protein
(B) Fat
(C) DNA
(D) RNA
Correct Answer: (C) DNA
92. Which among the following is the smallest Human Chromosome?
(A) Chromosome 10
(B) Chromosome 16
(C) Chromosome 20
(D) Chromosome 21
Correct Answer: (D) Chromosome 21
93. Which among the following group represents the most commonly found cancers in the world?
(A) Carcinoma
(B) Sarcoma
(C) Lymphoma
(D) Germ cell tumor
Correct Answer: (A) Carcinoma
94. Anesthesia which allows patients to undergo surgery without the distress and pain they would otherwise experience, has been practiced by man since ancient times. Which among the following plant is the most ancient source of anesthesia preparations?
(A) Opium (poppy)
(B) Cannabis
(C) Datura
(D) Coca
Correct Answer: (A) Opium (poppy)
95. It has been demonstrated by the scientists that, certain wines such as Red Wine posses health benefits because they contain antioxidants, which work in the body as Free Radical Scavengers and slow the oxidation of other molecules by capturing the free radicals. Which among the following is the most common antioxidant found in Red Wine?
(A) Catechin
(B) Tetrodotoxin
(C) Polyphenol
(D) Tocopherol
Correct Answer: (C) Polyphenol
96. Biologists have been able to demonstrate the hearing and sound sensory mechanism through the acoustico-lateralis system in which of the following vertebrates?
(A) amphibians
(B) snakes
(C) fishes
(D) Birds
Correct Answer: (C) fishes
97. The Red color of Red wine is mainly because of _____?
(A) Chemicals in Wine
(B) Pigments
(C) Color blended
(D) Aging
Correct Answer: (B) Pigments
98. What is RuBisCO?
(A) A Sugar
(B) An Enzyme
(C) A Fat
(D) A Carbohydrate
Correct Answer: (B) An Enzyme
Answer Explanation:
Ribulose-1,5-bisphosphate carboxylase oxygenase first enzyme of Calvin Cycle of Carbon Fixation
99. Which of the following part of the body stores Vitamin A, Vitamin D as well as Vitamin B12?
(A) Brain
(B) Liver
(C) Pancreas
(D) Red Blood Cells
Correct Answer: (B) Liver
100. Which of the following organ in human body produces albumin, one of the major components of blood serum?
(A) Bone Marrow
(B) Liver
(C) Pancreas
(D) Spleen
Correct Answer: (B) Liver
101. Which among the following is the only internal human organ which can regenerate?
(A) Pancreas
(B) Kidney
(C) Liver
(D) Spleen
Correct Answer: (B) Liver
102. Horses can also digest cellulose from grasses because _______?
(A) They are ruminants and have two stomachs
(B) They have a long alimentary Canal
(C) They have hind gut
(D) They don’t digest cellulose
Correct Answer: (C) They have hind gut
103. Jamnapari is a breed of which of the following?
(A) Goat
(B) Sheep
(C) Horse
(D) Cow
Correct Answer: (A) Goat
104. Due to which of the processes in plants the Radiocarbon dating is possible to estimate their age?
(A) Growth
(B) Chemosynthesis
(C) Photosynthesis
(D) Assimilation
Correct Answer: (C) Photosynthesis
105. Which among the following vitamins is involved in the breakdown of energy molecules such as glucose?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Correct Answer: (B) Vitamin B
106. Which among the following correctly refers to Ischemia?
(A) restriction in blood supply due to factors in the blood vessels
(B) Abrupt fall in the blood Pressure
(C) necrosis in a blood vessel due to a local lack of oxygen
(D) condition of severely deficient supply of oxygen to the body
Correct Answer: (A) restriction in blood supply due to factors in the blood vessels
107. What is the correct name of premature death of cells and living tissue?
(A) Neutrophilia
(B) Necrosis
(C) Neoplasia
(D) Nephrosis
Correct Answer: (B) Necrosis
108. Which of the following groups of plants is known as Magnoliophyta?
(A) Gymnosperms
(B) Angiosperms
(C) Algae
(D) Bryophyte
Correct Answer: (B) Angiosperms
109. Which among the following is a correct definition of Hematocrit?
(A) proportion of blood volume that is occupied by red blood cells
(B) proportion of blood volume that is occupied by white blood cells
(C) proportion of blood volume that is occupied by Leukocytes and Thrombocytes
(D) proportion of blood volume that is occupied by plasma
Correct Answer: (A) proportion of blood volume that is occupied by red blood cells
Answer Explanation:
Hematocrit levels are used in doping tests of Athletes , (the RBCs are carriers of Oxygen). hematocrit levels also denotes the blood iron. hematocrit levels of 38 or higher are normally suitable for the donors to donate their blood. Here please note that sometimes its is asked in exams about the ion which can help better in blood coagulation and normally options given are Ca, Na, K & Fe+3. The obvious answer is Fe+3.
110. Which among the following was the first vaccine ever to be developed?
(A) Cholera
(B) Smallpox
(C) Rabies
(D) Tetanus
Correct Answer: (B) Smallpox
111. Which among the following is the correct definition of Oxygen toxicity?
(A) A condition resulting from the harmful effects of breathing oxygen at high pressures
(B) A condition resulting from the contamination of oxygen with Carbon Monoxide
(C) A condition in which the body as a whole or a tissue is deprived of adequate oxygen supply
(D) A condition in which due to water pollution, the aquatic animals in water bodies get died
Correct Answer: (A) A condition resulting from the harmful effects of breathing oxygen at high pressures
112. Which among the following is true attribute to Polar bear?
(A) Herbivore
(B) Omnivore
(C) Carnivore
(D) Marsupial
Correct Answer: (C) Carnivore
Answer Explanation:
Please note that Polar Bear is the largest land carnivore animal, weighing about 350 to 700 kgs. Kodiak bear which is also of same size is a Omnivore
113. In which year India was certified as being free of variola (small pox virus) due to Indian national smallpox eradication programme (NSEP) and its intensified version (INSEP)?
(A) 1975
(B) 1977
(C) 1980
(D) 1985
Correct Answer: (B) 1977
114. With which of the following animals Galton’s whistle is most commonly associated?
(A) Horses
(B) Dogs
(C) whales
(D) Shark
Correct Answer: (B) Dogs
Answer Explanation:
Human can listen only the frequencies below 20 kHz. However animals like dogs, cats, dolphins, bats, and mice can listen above this limit. This principle was used by Galton who produced the ultrasonic waves by blowing a whistle. For human these whistle appears silent, while dogs and cats can listen it. It is used in training of dogs and cats
115. Causing agent of which of the following disease produces Integrase enzyme?
(A) Malaria
(B) Small Pox
(C) Swine flu
(D) AIDS
Correct Answer: (D) AIDS
116. Apart from the temporal bone, which among the following is considered as strongest bone in human body?
(A) Humerus
(B) Fibula
(C) Femur
(D) Tibia
Correct Answer: (C) Femur
117. world’s first cloned Buffalo was born in which country?
(A) India
(B) China
(C) USA
(D) Russia
Correct Answer: (A) India
Answer Explanation:
The First cloned buffalo was born in February 2009 at National Dairy Research Institute karnal
118. Global Fund to Fight AIDS, Tuberculosis and Malaria commonly called “The Global Fund” or “GFATM” was established In which year ?
(A) 1999
(B) 2000
(C) 2002
(D) 2004
Correct Answer: (C) 2002
119. Non-vascular embryophytes are also known as following?
(A) Pteridophytes
(B) Algae
(C) Bryophytes
(D) Gymnosperms
Correct Answer: (C) Bryophytes
120. How many arteries are present in Human Umbilical Cord?
(A) 1
(B) 2
(C) 3
(D) 4
Correct Answer: (B) 2
121. For Lemurs, which among the following is a correct group to place in ?
(A) Rodents
(B) Primates
(C) Bats
(D) Sloths
Correct Answer: (B) Primates
122. Lacrimal apparatus, Lacrimal artery, Lacrimal bone, Lacrimal ducts, Lacrimal fossa, Lacrimal fluid & Lacrimal gland are parts of which organ of the body?
(A) Ear
(B) Nose
(C) Eye
(D) Throat
Correct Answer: (C) Eye
123. Rafflesia is the plant with largest flowers and found in many parts of the South East Asia. It is a ______?
(A) Mangrove Plant
(B) Ornamental Plant
(C) Parasitic Plant
(D) Carnivorous Plant
Correct Answer: (C) Parasitic Plant
124. Who among the following is called father of Modern Genetics ?
(A) William Bateson
(B) Robert Hooke
(C) E J Butler
(D) F O Bower
Correct Answer: (A) William Bateson
125. Which among the following is correct about biocenosis?
(A) The study of energy transformations in the living systems
(B) Community of organisms occupying an area
(C) Study of the parts of an ecosystem with specific species
(D) A kind of abnormality related to organism living in a particular habitat
Correct Answer: (B) Community of organisms occupying an area
126. Apart from sugarcane (most commonly Saccharum officinarum) which among the following plants is widely known in the world as a commercial source of table sugar?
(A) Toona ciliate
(B) Gloriosa superba
(C) Asparagus plumosus
(D) Beta vulgaris
Correct Answer: (D) Beta vulgaris
Answer Explanation:
Beta vulgaris is beet or sugarbeet or Chukandar and has been widely used as a commercial crop for table sugar. Glorisoa superba is Glory Lily which is an ornamental plant. Asparagus pulmosus is also an ornamental plant. Brassica alba is common mustard. Toona cilata is a timber plant from which Indian Redwood is obtained.
127. For purity of which of the following commodity is expressed in ICUMSA numbers?
(A) Refined Edible Oil
(B) Refined Edible Sugar
(C) Refined Vegetable Oil
(D) Milk
Correct Answer: (B) Refined Edible Sugar
128. From which part, Coconut coir is obtained?
(A) Epicarp
(B) Mesocarp
(C) Endocarp
(D) Seed
Correct Answer: (B) Mesocarp
129. Which of the following plants have respiratory roots?
(A) Marshy Plants
(B) Mangroves
(C) Epiphytes
(D) Submerged Hydrophytes
Correct Answer: (B) Mangroves
130. From which part of the plant Glycyrrhiza glabra, Liquorice or Mulethi is obtained?
(A) Leaves
(B) Roots
(C) Fruits
(D) Stem
Correct Answer: (B) Roots
Answer Explanation:
Mulethi is powdered liquorice root and is an effective expectorant used since ancient times in Ayurvedic medicines. Its is also used in Jastimadhu which is a tooth powder. many cough syrups today contain Liquorice as an ingredient. It is also used in mouth ulcers and peptic ulcers.
131. Which among the following plants is known as Indian ginseng?
(A) Withania somnifera
(B) Datura ceratocaula
(C) Iberis amara
(D) Capsella bursa pastoris
Correct Answer: (A) Withania somnifera
Answer Explanation:
Withania somnifera or commonly called as Ashwagandha
132. Which part of the plant Raphanus sativus is edible?
(A) Fruit
(B) Leaves
(C) Roots
(D) All the above
Correct Answer: (D) All the above
Answer Explanation:
Raphanus sativus is Radish. The Edible parts are roots, but Radish leaves and seedpods which are fruits are also edible.
133. Who among the following coined the term Bacterium?
(A) Antonie van Leeuwenhoek
(B) Christian Gottfried Ehrenberg
(C) Louis Pasteur
(D) Robert Koch
Correct Answer: (B) Christian Gottfried Ehrenberg
134. Which among the following is a correct definition of Saprophytes?
(A) A parasitic plant that can complete its life cycle independent of a host
(B) A heterotrophic plant that feeds upon other living plants
(C) A heterotrophic plant that feeds upon dead organic matter
(D) A plant that is unable to synthesize a particular organic compound
Correct Answer: (C) A heterotrophic plant that feeds upon dead organic matter
135. In which profession a qualification FRCS is awarded in many parts of the world?
(A) Doctors
(B) Architectures
(C) Engineers
(D) Chemists
Correct Answer: (A) Doctors
Answer Explanation:
Full form of FRCS is Fellow of the Royal College of Surgeons
136. Hodophobia is a fear associated with which of the following?
(A) Sleeping
(B) Walking
(C) Traveling
(D) Running
Correct Answer: (C) Traveling
137. In which part of the human body “Pleura” is found?
(A) Lungs
(B) Brain
(C) Liver
(D) Heart
Correct Answer: (A) Lungs
138. Plants growing on marshy areas are commonly called as _____?
(A) Oxylophytes
(B) Lithophytes
(C) Helophytes
(D) Psilophytes
Correct Answer: (C) Helophytes
139. Who among the following was awarded Nobel Prize in 1958 for One Gene One Enzyme Concept?
(A) Landsteiner & Weiner
(B) Avery, Macleod and mcCarty
(C) Jacob & Wollman
(D) George Beadle and Edward Tatum
Correct Answer: (D) George Beadle and Edward Tatum
140. Which among the following is not a beverage plant?
(A) Camellia sinensis
(B) Theobroma cacao
(C) Coffea Arabica
(D) Alonsoa grandiflora
Correct Answer: (D) Alonsoa grandiflora
Answer Explanation:
Alonsoa grandiflora is an ornamental plant
141. Which of the following organism grows on Common Bread?
(A) Bacterium
(B) Yeast
(C) Mucor
(D) Virus
Correct Answer: (C) Mucor
142. Which among the following correctly defines Hypoglycemia ?
(A) Lower than normal level of thyroxin secretion
(B) Lower than normal level of protein
(C) Lower than normal secretion of one or more of the eight hormones normally produced by the pituitary gland
(D) Lower than normal level of blood glucose
Correct Answer: (D) Lower than normal level of blood glucose
143. Who among the following is best known for his discovery and development of the first safe and effective polio vaccine.?
(A) Jonas Salk
(B) David Bodian
(C) Almroth Wright
(D) Albert Sabin
Correct Answer: (A) Jonas Salk
144. Who among the following scientists is known for developing techniques for DNA fingerprinting and DNA profiling which are now used all over the world in forensic science to assist police detective work?
(A) Vernon Heywood
(B) Patrick Laidlaw
(C) Alec Jeffreys
(D) Heinz Wolff
Correct Answer: (C) Alec Jeffreys
145. Which among the following is not rightly matched : (Ailments and affected parts of Body)
(A) Dermatitis – Skin
(B) Glossitis – Tongue
(C) Peritonitis – Abdomen
(D) Cystitis – Caecum
Correct Answer: (D) Cystitis – Caecum
Answer Explanation:
Cystitis is related to Bladder
146. Any disease which has a name with a suffix encephalitis is a disorder of ______?
(A) Nerves
(B) Brain
(C) Lungs
(D) Heart
Correct Answer: (B) Brain
147. In which of the following diseases copper accumulates in tissues?
(A) Fabry disease
(B) Canavan disease
(C) Wilson’s disease
(D) Gunther disease
Correct Answer: (C) Wilson’s disease
148. Which among the following is essential for both activation and action of thrombin?
(A) Na+
(B) Cl-
(C) Ca2+
(D) Mg2+
Correct Answer: (C) Ca2+
149. Which among the following is correct about Blood Group B?
(A) It has B antigen on its red cells and Anti A antigen in its plasma
(B) It has B antigen on its red cells and Anti B antigen in its plasma
(C) It has no antigens on its red cells but, anti A antigen in its plasma
(D) It has B antigen on its red cells but no antigen in its plasma
Correct Answer: (A) It has B antigen on its red cells and Anti A antigen in its plasma
150. Which among the following is not a function of Sympathetic nerves in the Autonomic nervous system?
(A) Enhancing the heartbeats
(B) constricting the blood vessels
(C) dilate pupils
(D) contract urinary bladder
Correct Answer: (D) contract urinary bladder
Answer Explanation:
contract urinary bladder is a function of Parasympathetic nerves. Sympathetic nerves relax urinary bladder.
151. Which among the following is largest animal Phylum?
(A) Mollusca
(B) Arthropoda
(C) Mammalia
(D) Annelida
Correct Answer: (B) Arthropoda
152. Which among the following enzyme plays an important role in adding the building blocks to the primer in a sequence determined by the DNA template?
(A) Helicase
(B) Primase
(C) Polymerase
(D) Diastase
Correct Answer: (C) Polymerase
153. Which among the following bacterial cells are found in cubical packets?
(A) Tetracocci
(B) Streptococci
(C) Staphylococci
(D) Sarcinae
Correct Answer: (D) Sarcinae
154. Which among the below is not a food plant?
(A) Allium cepa
(B) Allium sativum
(C) Asparagus officinalis
(D) Atropa belladona
Correct Answer: (D) Atropa belladona
155. The pneumatophores are negatively geotropic roots which grow upward & meant for gaseous exchange. These are a characteristic of _______?
(A) Halophytes
(B) Heliophytes
(C) Sciophytes
(D) Lithophytes
Correct Answer: (A) Halophytes
156. In which of the following Cloaca which is the posterior opening that serves as the only such opening for the intestinal, reproductive and urinary tracts is present?
(A) Aves only
(B) Aves & Amphibians
(C) Aves, Amphibians and Reptiles
(D) Pisces, Aves, Amphibians and Reptiles
Correct Answer: (C) Aves, Amphibians and Reptiles
157. Which among the following is correct about Viruses?
(A) They have DNA only
(B) They have RNA only
(C) They have both DNA & RNA
(D) They have either DNA or RNA
Correct Answer: (D) They have either DNA or RNA
158. Lepidopterology is a branch of biology, which deals with the following?
(A) Ferns
(B) animals in stagnant waters
(C) Lipids and Fats
(D) Moths and Butterflies
Correct Answer: (D) Moths and Butterflies
159. The existence of genes was first suggested by?
(A) Gregor Mendel
(B) George Wells Beadle
(C) Edward Lawrie Tatum
(D) Frederick Griffith
Correct Answer: (A) Gregor Mendel
160. The human musculoskeletal system consists of
(A) human skeleton
(B) bones attached to other bones with joints
(C) skeletal muscle attached to the skeleton by tendons.
(D) All the above
Correct Answer: (D) All the above
161. Lipoproteins which are the large molecules and which transport the cholesterol in the bloodstream are ______-?
(A) protein molecules
(B) fat molecules
(C) protein and fat molecules
(D) Lipids
Correct Answer: (C) protein and fat molecules
162. Cobalt is a component of which of the following Vitamins?
(A) Vitamin A
(B) Vitamin D
(C) Vitamin E
(D) Vitamin B12
Correct Answer: (D) Vitamin B12
163. Which among the following conditions will give birth to Fraternal Twins?
(A) a single egg is fertilized to form one zygote which then divides into two separate embryos
(B) sperm cells fertilize both the ovum and the second polar body
(C) two eggs are independently fertilized by two different sperm cells
(D) none of the above
Correct Answer: (C) two eggs are independently fertilized by two different sperm cells
164. In which of the following conditions a person is born with both ovarian and testicular tissues i.e. both female & male organs?
(A) Swyer syndrome
(B) Penile agenesis
(C) Polyorchidism
(D) Hermaphroditism
Correct Answer: (D) Hermaphroditism
165. In which of the following branches of science study of functions, characteristics, and phenomena observed in the living world and the application of this knowledge to world of machine is studied?
(A) Biometry
(B) Bionics
(C) Bionomy
(D) Bionomy
Correct Answer: (B) Bionics
166. Which of the following places are main center of silicosis and silico-tuberculosis diseases affecting the workers in India?
(A) Glass Factories
(B) Stone quarries and stone crushing factories
(C) Fireworks Factories
(D) Brick Kilns
Correct Answer: (B) Stone quarries and stone crushing factories
167. Which among the following correctly denotes Net Reproduction Rate?
(A) Average number of children that would be born to a woman over her lifetime
(B) Average number of children that would be born to a couple over their lifetime
(C) Birth Rate — Death rate
(D) The rate at which women are replaced by daughters who will have children
Correct Answer: (D) The rate at which women are replaced by daughters who will have children
168. Which among the following is correct about Saliva of a Healthy Human?
(A) It is slightly acidic
(B) It is slightly saline
(C) It is slightly alkaline
(D) It is neutral
Correct Answer: (C) It is slightly alkaline
169. With which of the following diseases Project Kavach is related to
(A) Malaria
(B) Dengue
(C) AIDS
(D) Swine flu
Correct Answer: (C) AIDS
170. Which among the following is the first country to issue research licenses for human embryonic cloning to create stem cells?
(A) United States
(B) Australia
(C) Germany
(D) Britain
Correct Answer: (D) Britain
171. Japanese encephalitis is a disease caused by __ ?
(A) Virus
(B) Protozoa
(C) Bacteria
(D) Fungi
Correct Answer: (A) Virus
Answer Explanation:
Japanese encephalitis is caused by virus from the family Flaviviridae. It’s a Mosquito Borne Disease
172. Which among the following is caused by Virus?
(A) Mumps
(B) Beri Beri
(C) Tuberculosis
(D) Dysentery
Correct Answer: (A) Mumps
173. Which among the following causes ‘Dumdum Fever’ or Kala Azar?
(A) Bacteria
(B) Fungi
(C) protozoa
(D) Virus
Correct Answer: (C) protozoa
Answer Explanation:
Kala Azar is also known as Dum dum fever and Visceral leishmaniasis . Its caused by protozoa of Leishmania genus, vector is sandfly
174. Who among the following worked on Tuberculosis?
(A) Robert Koch
(B) Karl Ernst von Baer
(C) Erwin Neher
(D) Richard Goldschmidt
Correct Answer: (A) Robert Koch
175. Which among the following is not a carnivorous plant?
(A) Pitcher plant
(B) Venus Fly Trap
(C) waterwheel plant
(D) Marsh Mallow
Correct Answer: (D) Marsh Mallow
176. A four chambered heart is found in which of the following?
(A) mammals only
(B) mammals and fish
(C) mammals & Birds
(D) mammals and Amphibians
Correct Answer: (C) mammals & Birds
Answer Explanation:
Archosaurs (crocodilians and birds) and mammals show complete separation of the heart into two pumps, for a total of four heart chambers;
177. What would be the percentage of Glucose in the Urine of a healthy person?
(A) less than 1%
(B) More than 1%
(C) More than 0.1%
(D) 0%
Correct Answer: (D) 0%
178. Which among the following is not an Enzyme?
(A) Gastrin
(B) Ptyalin
(C) Pepsin
(D) Rennin
Correct Answer: (A) Gastrin
Answer Explanation:
Gastrin, is a hormone, stimulates secretion of gastric acid (HCl) by the parietal cells of the stomach and aids in gastric motility
179. The blood pressure is denoted as following?
(A) Systolic Pressure / Diastolic Pressure
(B) Diastolic Pressure / Systolic Pressure
(C) Venous Pressure / Systolic Pressure
(D) Systolic Pressure / Pulse Pressure
Correct Answer: (A) Systolic Pressure / Diastolic Pressure
Answer Explanation:
Blood Pressure is expressed in two numbers. The higher number is known as Systolic Pressure, or the amount of force (as measured in millimetres of mercury) that is exerted against the artery walls during a heartbeat (contraction). The lower number in the Diastolic pressure, which does the force exist while the heart is resting between beats.
180. Who among the following proved that Bacteria don’t originate by spontaneous generation?
(A) Redi
(B) Pasteur
(C) Hooke
(D) Shleiden
Correct Answer: (B) Pasteur
181. Which component in light causes suppression of melatonin produced by the pineal gland?
(A) Red
(B) Blue
(C) Green
(D) Indigo
Correct Answer: (B) Blue
182. The Chlorophyll cells within the plant leaves are perfectly optimized to absorb which of the following waves of the Sun Light?
(A) Green
(B) Red & Blue
(C) Red & Yellow
(D) Yellow and Blue
Correct Answer: (B) Red & Blue
183. Which among the following suspension in water is often called milk of magnesia because of its milk-like appearance?
(A) Magnesium Carbonate
(B) Magnesium Hydroxide
(C) Magnesium Lactate
(D) Magnesium Oxide
Correct Answer: (B) Magnesium Hydroxide
184. Kazimierz Funk or Casimir Funk, was a Polish biochemist, generally credited with the first formulation of the concept of which of the following ?
(A) Amino Acids
(B) DNA
(C) RNA
(D) Vitamins
Correct Answer: (D) Vitamins
185. Which among the following are the building blocks of human body ?
(A) Muscles
(B) Cells
(C) Neurons
(D) Proteins
Correct Answer: (B) Cells
186. Which among the following disease is caused by deficiency of Nicotinic acid?
(A) Anemia
(B) Pellagra
(C) Dermatitis
(D) Goiter
Correct Answer: (B) Pellagra
187. Which among the following is not correctly matched?
(A) Penicillin – Alexander Flemming
(B) Barometer – Torricelli
(C) X-Ray – W. Roentgen
(D) Parachute – W H Carothers
Correct Answer: (D) Parachute – W H Carothers
Answer Explanation:
Parachute was discovered by Louis Lenormand
188. Which among the following contributes to the replenishment of soil?
(A) Bacteria
(B) Fungi
(C) Algae
(D) Earthworm
Correct Answer: (D) Earthworm
189. Which among the following test is most suitable to judge paternity?
(A) Blood Grouping
(B) Tissue Culture
(C) DNA Test
(D) Genetic Codes
Correct Answer: (C) DNA Test
190. Which among the following is not correctly matched?
(A) Malleus – Middle Ear Bone
(B) Maxilla – Cranial Bone
(C) Lunate Carpal Bon
(D) All are correct
Correct Answer: (B) Maxilla – Cranial Bone
Answer Explanation:
Maxilla is a Facial Bone
191. Which among the following is wood cellulose?
(A) Rayon
(B) Balata
(C) Cork
(D) None of the above
Correct Answer: (A) Rayon
192. Which among the following is correct ?
(A) Caffeine which is a diuretic is a constituent of coffee but not found in tea
(B) Vitamin C which is also called ascorbic acid can be replaced with citric acid in our food
(C) Citric acid is used in Cola drinks
(D) All are wrong statements
Correct Answer: (B) Vitamin C which is also called ascorbic acid can be replaced with citric acid in our food
193. The pitcher plant is characterized by which of the following plants ?
(A) Autotrophes
(B) Insectivorous
(C) Allergen
(D) None of the above
Correct Answer: (B) Insectivorous
194. Sexual cannibalism is a concept in which the female kills the male after mating and is normally found in _________?
(A) Dragon fly
(B) Spider
(C) Honey Bee
(D) None of the above
Correct Answer: (B) Spider
Answer Explanation:
In Honey Bee the male itself dies after copulation. sexual cannibalism is common in many families of spiders and scorpions
195. The cultivation of which of the plants on wastelands has a potential to generate biofuel in large quantities?
(A) Jatropha curcas
(B) Copaifera langsdorffii
(C) Camelina sativa
(D) None of the above
Correct Answer: (A) Jatropha curcas
196. If Red blood cells is kept in distilled water what will happen?
(A) Shrink and collapse
(B) Stick together
(C) increase in volume and burst
(D) Remains same
Correct Answer: (C) increase in volume and burst
Answer Explanation:
Due to osmosis water would flow into the cells and they would swell
197. How many vertebrae does a human being have ?
(A) 33
(B) 36
(C) 29
(D) 19
Correct Answer: (A) 33
Answer Explanation:
The vertebral column usually consists of 33 vertebrae: 24 presacral vertebrae (7 cervical, 12 thoracic, and 5 lumbar) followed by the sacrum (5 fused sacral vertebrae) and the coccyx (4 frequently fused coccygeal vertebrae).
198. What fraction of Human Blood is Plasma?
(A) 35%
(B) 45%
(C) 50%
(D) 55%
Correct Answer: (D) 55%
Answer Explanation:
Blood plasma is the liquid component of whole blood, and makes up approximately 55% of the total blood volume. It is composed primarily of water with small amounts of minerals, salts, ions, nutrients, and proteins in solution. In whole blood, red blood cells, leukocytes, and platelets are suspended within the plasma.
199. A genetic code specifies how many kinds of amino acids?
(A) 12
(B) 15
(C) 20
(D) 25
Correct Answer: (C) 20
Answer Explanation:
There are as many as 100 thousand kinds of proteins that constitute the body, and these comprise only 20 kinds of amino acids in various combinations.
200. Which among the following function as locus of biochemical reactions?
(A) Cell plasma
(B) Cell membrane
(C) Cell walls
(D) None of the above
Correct Answer: (B) Cell membrane
Answer Explanation:
The cells membranes hold enzymes of sequential reactions in close proximity
