Biology MCQs

11. Which organ of the body produces the fluid known as bile?
[A] Liver
[B] Pancreas
[C] Gall bladder
[D] Kidney

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12. Which one of the following genetic diseases is sex-linked? (UPSC Prelims 1999)
[A] Royal haemophilia
[B] Tay-Sachs disease
[C] Cystic fibrosis
[D] Hypertension

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13. In which branch of biology is the study of breasts deals?
[A] Mammology
[B] Mastology
[C] Malacology
[D] None of these

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14. Which of the following biomolecules is more widely distributed in the cell?
[A] Chloroplast
[B] RNA
[C] DNA
[D] Spaherosomes

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15. Which virus is most susceptible to chloroform?
[A] Herpes
[B] Influenza
[C] Measles
[D] All of these

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16. Chemotaxis is a phenomenon of__?
[A] swimming away of bacteria
[B] swimming towards a bacteria
[C] swimming away or towards of bacteria in presence of chemical compound
[D] All of the above

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17. What is the arrangement of megaspores in tetrads in gymnosperms?
[A] Decussate
[B] Tetrahedral
[C] Linear
[D] Isobilateral

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18. To which family do brown mustard and broccoli belong?
[A] Solanaceae
[B] Fabaceae
[C] Cruciferae
[D] None of these

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19. Drying, wilting, and dropping of leaves of a plant due to insufficient water supply, excessive transpiration, or any vascular disease is called
[A] Guttation
[B] Phyllotaxy

[C] Wilting
[D] Phyllode

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20. Which plant tissue has the ability to grow rapidly by division?
[A] Meristematic tissue
[B] Permanent tissues
[C] Complex Permanent Tissue
[D] Protective tissues

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