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This section includes 1075 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
1. |
Deficiency of Vitamin B6 in man causes |
A. | rickets |
B. | scurvy |
C. | beriberi |
D. | anaemia |
Answer» E. | |
2. |
Match the following :
|
||||||||||
A. | A 4, B 2, C 3, D l | ||||||||||
B. | A 4, B 3, C 1, D 2 | ||||||||||
C. | A 3, B 4, C l, D 2 | ||||||||||
D. | A 2, B l, C 4, D 3 | ||||||||||
Answer» C. A 3, B 4, C l, D 2 | |||||||||||
3. |
Match the following :
|
||||||||||
A. | A, B, C, D | ||||||||||
B. | A, B, C, D | ||||||||||
C. | A, B, C, D | ||||||||||
D. | A, B, C, D | ||||||||||
Answer» D. A, B, C, D | |||||||||||
4. |
Match List I with List II and choose the correct response :
|
||||||||||
A. | a-l, b-2, c-3, d-4 | ||||||||||
B. | a-2, b-3. c-4, d-l | ||||||||||
C. | a-3, b-4, c-l, d-2 | ||||||||||
D. | a-4, b-1, c-2, d-3 | ||||||||||
Answer» D. a-4, b-1, c-2, d-3 | |||||||||||
5. |
Match correctly the insect vectors in List I with the diseases transmitted by them given in List II:
|
||||||||||
A. | a-1, b-4, c-2, d-3 | ||||||||||
B. | a-2, b-l, c-4, d-3 | ||||||||||
C. | a-3, b-2, c-1, d-4 | ||||||||||
D. | a-4, b-3, c-l. d-2 | ||||||||||
Answer» E. | |||||||||||
6. |
The metal ion present in vitamin B12 is : |
A. | cobalt |
B. | zinc |
C. | nickel |
D. | iron |
Answer» B. zinc | |
7. |
Name the vitamin not found in any animal food ? |
A. | Vitamin B |
B. | |
C. | Vitamin C |
D. | Vitamin D |
E. | Vitamin K |
Answer» C. Vitamin C | |
8. |
When the Left Ventricle in the human heart contracts, the blood moves to the
|
A. | Brain |
B. | Pulmonary Artery |
C. | Aorta |
D. | Lungs |
Answer» D. Lungs | |
9. |
Which of the following agricultural practices have been primarily responsible for pollution of our water resources ?
|
A. | B and C |
B. | A, C and D |
C. | A and B |
D. | A, B and D |
Answer» B. A, C and D | |
10. |
Match correctly the infectious agents given in List I with the diseases caused by them given in List II :
|
||||||||||
A. | a-1, b-2, c-4, d-3 | ||||||||||
B. | a-2, b-4, c-1, d-3 | ||||||||||
C. | a-3, b-1, c-2, d-4 | ||||||||||
D. | a-4, b-2, c-3, d-1 | ||||||||||
Answer» C. a-3, b-1, c-2, d-4 | |||||||||||
11. |
The Biosphere is the zone of Earth where life is found. It includes parts of :
|
A. | a and c |
B. | a, b and d |
C. | a and d |
D. | b, c and d |
Answer» C. a and d | |
12. |
The metal, which is a constituent of vitamin B12 is |
A. | Iron |
B. | Magnesium |
C. | Zinc |
D. | Cobalt |
Answer» E. | |
13. |
The process through which excess of light energy is dissipated in photosynthesis is known as
|
A. | Quenching |
B. | Scavenging |
C. | Photolysis |
D. | Photo-phosphorylation |
Answer» B. Scavenging | |
14. |
The sum of genes in a population is called
|
A. | Phenotype |
B. | Karyotype |
C. | Genotype |
D. | Gene pool |
Answer» E. | |
15. |
What is the other name for Vitamin B2? |
A. | Thiamine |
B. | Haemoglobin |
C. | Riboflavin |
D. | Dextrose |
Answer» D. Dextrose | |
16. |
Which of the following atmospheric gases constitute greenhouse gases?
|
A. | a, c and d |
B. | a and d |
C. | a and c |
D. | a, b and d |
Answer» B. a and d | |
17. |
Which one of the following is an abnormal constituent of urine ?
|
A. | Creatinine |
B. | Urea |
C. | Uric acid |
D. | Ketone bodies |
Answer» E. | |
18. |
Vitamin E is particularly important for |
A. | development of teeth |
B. | carbohydrate metabolism |
C. | normal activity of sex glands |
D. | |
E. | general health of epithelial tissues |
Answer» D. | |
19. |
In the eye, colour vision is effected by the presence of :
|
A. | Choroid coat |
B. | Sclerotic coat |
C. | Rods |
D. | Cones |
Answer» E. | |
20. |
What is a Sponge ? |
A. | A fungus |
B. | A fossil |
C. | A plant |
D. | An animal |
Answer» E. | |
21. |
Fermentation is a process of decomposition of an organic compound by :
|
A. | catalysts |
B. | enzymes |
C. | carbanions |
D. | free radicals |
Answer» C. carbanions | |
22. |
By which the sex of a child is determined before birth ?
|
A. | Sperms of father |
B. | Foetus of mother |
C. | Both (A) and (B) |
D. | Nutrition of mother |
Answer» C. Both (A) and (B) | |
23. |
Which of the following hormone is released in excess quantity during excitement ?
|
A. | Cortisone |
B. | Serotonin |
C. | Adrenaline |
D. | Oestrogen |
Answer» E. | |
24. |
Which of the following is known as Vitamin B1? |
A. | Retinol |
B. | Thiamin |
C. | Riboflavin |
D. | Ascorbic Acid |
Answer» C. Riboflavin | |
25. |
Widal test is used for the diagnosis of |
A. | Salmonellosis |
B. | Malaria |
C. | Cholera |
D. | Typhoid |
Answer» E. | |
26. |
Why death of fish is more common during summer than in winter?
|
A. | shortage of food |
B. | concentration of toxins |
C. | depletion of oxygen |
D. | spread of diseases |
Answer» D. spread of diseases | |
27. |
Statement I : Complex tissue is made up of more than one type of cells.
|
A. | Statement I is correct, but Statement II is incorrect. |
B. | Statement I is incorrect, but Statement II is correct. |
C. | Both statements I and II are correct. |
D. | Both statements I and II are incorrect. |
Answer» B. Statement I is incorrect, but Statement II is correct. | |
28. |
Normally animals can change the place, but which one of the following animals cannot change the place ? |
A. | Starfish |
B. | Sponge |
C. | Hydra |
D. | Leech |
Answer» D. Leech | |
29. |
Which of the following amphibians lacks tongue ? |
A. | Sphenodon |
B. | Salamander |
C. | Ichthyophis |
D. | Necturus |
Answer» D. Necturus | |
30. |
The chief raw material used for manufacturing Rayon is : |
A. | Nylon |
B. | Cellulose |
C. | Silicon |
D. | Radium and Argon |
Answer» C. Silicon | |
31. |
The food conducting tissue of a plant is |
A. | Phloem |
B. | Xylem |
C. | Parenchyma |
D. | Collenchyma |
Answer» B. Xylem | |
32. |
B Diversity is also known as : |
A. | Within habitat diversity |
B. | Ecosystem diversity |
C. | Global diversity |
D. | Between habitat diversity |
Answer» C. Global diversity | |
33. |
The harmful substances produced by the microbes are known as |
A. | Antibiotics |
B. | Pollutants |
C. | Hormones |
D. | Toxins |
Answer» E. | |
34. |
Pleura is the covering of |
A. | Lung |
B. | Liver |
C. | Kidney |
D. | Heart |
Answer» B. Liver | |
35. |
In cactus, the spines are the modified |
A. | stem |
B. | stipulse |
C. | leaves |
D. | buds |
Answer» D. buds | |
36. |
Process through which plants reproduce |
A. | Pollination |
B. | Condensation |
C. | Eating |
D. | Evaporation |
Answer» B. Condensation | |
37. |
The noble gas used for the treatment of cancer is |
A. | Helium |
B. | Argon |
C. | Krypton |
D. | Radon |
Answer» E. | |
38. |
Deficiency of Vitamin B |
A. | rickets |
B. | scurvy |
C. | beriberi |
D. | anaemia |
Answer» E. | |
39. |
Red Data Book provides an account of |
A. | Endangered plants only |
B. | Fossil plants |
C. | Endangered plants and animals |
D. | Extinct animals only |
Answer» D. Extinct animals only | |
40. |
Normal blood pressure reading of an adult human : |
A. | 80/120 mm Hg |
B. | 120/80 mm Hg |
C. | 130/90 mm Hg |
D. | 160/95 mm Hg |
Answer» C. 130/90 mm Hg | |
41. |
If xylem and phloem are arranged in the same radius, such a vascular bundle is called : |
A. | collateral |
B. | bicollateral |
C. | concentric |
D. | radial |
Answer» B. bicollateral | |
42. |
Linseed is obtained from |
A. | Castor |
B. | Flax |
C. | Groundnut |
D. | Sesame |
Answer» C. Groundnut | |
43. |
Tachycardia is a condition characterized by |
A. | heart-rate decreases from the normal |
B. | heart- rate increases from the normal |
C. | heart-beat stops |
D. | heart fails to pump |
Answer» C. heart-beat stops | |
44. |
The enzyme which catalyzes the unwinding of DNA helix during replication is: |
A. | Primase |
B. | Topoisomerase |
C. | Helicase |
D. | DNApolymerase |
Answer» D. DNApolymerase | |
45. |
Which of the following is a form of sexual reproduction: |
A. | Fragmentation |
B. | Haemapheoditism |
C. | Budding |
D. | Fission |
Answer» C. Budding | |
46. |
The five key indicators of global climate change of our planet are : |
A. | Antartic Sea ice, Oxygen, Rainfall, Drought and Sea level |
B. | Sea-level, Rising temperatures, Rainfall, Nitrogen and Arctic Sea ice |
C. | Arctic Sea ice, Carbon dioxide, Global Temperature, Sea level and Land ice. |
D. | None of these |
Answer» D. None of these | |
47. |
The Ozone layer protects us from: |
A. | Cosmic rays |
B. | Ultra-Violet rays |
C. | |
D. | Visible rays |
E. | Infrared rays |
Answer» C. | |
48. |
The plant that behaves as a root parasite is |
A. | Ficus |
B. | Santalum |
C. | Cuscuta |
D. | Euphorbia |
Answer» D. Euphorbia | |
49. |
Name the tiny pores present on the surface of leaves in plants. |
A. | Pits |
B. | Stomata |
C. | Trichomes |
D. | Hydathodes |
Answer» C. Trichomes | |
50. |
Magnesium is a constituent metal of |
A. | Chlorophyll molecule |
B. | DNA |
C. | Mitochondria |
D. | Ribosomes |
Answer» B. DNA | |