Biology MCQs

11. Which of the following correctly defines an Antigen? (UPSC Prelims 2002)
[A] Lowers body temperature
[B] destroys harmful bacteria
[C] triggers the immune system
[D] is used as an antidote to poison

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12. Which branch of biology is known for the study of fruits?
[A] Pomology
[B] Agronomy
[C] Floriculture
[D] None of these

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13. Serology is related to which of the following statements?
[A] Study of dietetics
[B] Study of snakes
[C] Study of serum
[D] Study of seeds

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14. Who among the following is considered to be the father of neuroscience?
[A] Santiago Ramón y Cajal
[B] James Black
[C] Erwin Chargaff
[D] Jacques Cousteau

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15. What is a jelly-like substance found floating inside the plasma membrane called?
[A] Cell sap
[B] Cytoplasm
[C] Karyoplasm
[D] Mitochondria

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16. Which of the following is not true about virus?
[A] Reproduce independently
[B] Contain DNA
[C] Contain RNA
[D] Are extracellular

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17. Bacteria come under which type of organisms?
[A] Single-celled
[B] Microscopic
[C] Living
[D] All of the above

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18. Iodine is obtained from which of the following members?
[A] Green algae
[B] Brown algae
[C] Red algae
[D] Blue green algae

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19. In which of the following colour, rate of photosynthesis is maximum?
[A] Red
[B] Blue
[C] Green
[D] Yellow

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20. In which of the following colour, rate of photosynthesis is minimum?
[A] Red
[B] Blue
[C] Green
[D] Yellow

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