Biology MCQs

11. Malaria fever is caused by which of the following reasons? (UPSC Prelims 1991)
[A] Immediately after mosquito bite
[B] Upon disintegration and bursting of red blood cells
[C] When the malaria causing germs reach the liver
[D] Upon release of toxins into blood

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12. Match List I with List II and select the correct answer using the codes given below the lists.

List I List II
A. Islets of Langerhans 1. Calcitonin
B. Pituitary gland 2. Epinephrine
C. Thyroid gland 3. Growth hormone
D. Adrenal gland 4. Insulin

Codes:
     A B C D (UPSC Prelims 1995)

[A] 4 3 2 1
[B] 4 3 1 2
[C] 3 4 1 2
[D] 3 2 4 1

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13. Fat present below the skin surface in our body, acts as a barrier against which of the following losses? (UPSC Prelims 1996)
[A] Loss of heat from the body
[B] loss of essential body fluids
[C] loss of salts from the body
[D] entry of harmful micro-organisms from the environment

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14. Which among the following is the longest bone in human body?
[A] Stapes
[B] Femur
[C] Pelvis
[D] Sternum

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15. Which gas is absorbed by the plants during photosynthesis?
[A] Oxygen
[B] Carbon dioxide
[C] Nitrogen
[D] Hydrogen

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16. Whooping cough is caused by which of the following?
[A] Bordetella pertussis
[B] Helicobacter pylori
[C] Yersinia pestis
[D] Treponema pallidum

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17. Which of the following is a true moss?
[A] Club moss
[B] Reindeer moss
[C] Irish moss
[D] Bogg moss (Sphagnum)

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18. Removal of excess water from the xylem at the edges of the leaves when the stomata are closed is known as__?
[A] Guttation
[B] Transpiration
[C] Photosynthesis
[D] Storage

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19. Which plant tissue consists of phloem and xylem?
[A] Complex Permanent Tissue
[B] Simple Permanent Tissue
[C] Parenchyma Tissue
[D] Collenchyma Tissue

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20. What are the functions of flowers?
[A] Pollination
[B] Reproduction
[C] Fruit formation
[D] All of the above

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