Biology MCQs

11. Who was awarded Nobel Prize for deciphering the language of bees? (UPSC Prelims 1995)
[A] H.G. Khurana
[B] K.V. Frisch
[C] Julian Huxley
[D] Dorothy Hodgkins

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12. Which of the following defines the process of Metastasis? (UPSC Prelims 2001)
[A] cells divide rapidly under the influence of drugs
[B] cancer cells spread through the blood or laymphatic system to other sites or organs
[C] the chromosomes in cell nuclei are attached to the spindle before moving to the anaphase poles
[D] cancer cells are successfully inhibited to divide any further

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13. Ticks and mites belongs to which of the following classes? (UPSC Prelims 2002)
[A] Arachnids
[B] Crustaceans
[C] Insects
[D] Myriapods

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14. Which part of the human body is affected by Alziemer’s disease?
[A] Brain
[B] Lungs
[C] Heart
[D] Kidneys

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15. rRNA is synthesized by which of the following?
[A] Nucleus
[B] Nucleolus
[C] Golgi body
[D] Cytoplasm

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16. Which one of the following is an example of a phospholipid?
[A] Steroid

[B] Cholesterol
[C] Lecithin
[D] Sterol

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17. Which of the following virus has its envelope from the host cell nucleus?
[A] Paramyxoviruses
[B] Retroviruses
[C] Orthomyxoviruses
[D] Herpesviruses

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18. Which of the following are the most primitive vascular plants?
[A] Mosses
[B] Cycads
[C] Kelps
[D] Ferns

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19. Which gas is taken in by plants in the process of photosynthesis?
[A] Oxygen
[B] Carbon dioxide
[C] Nitrogen
[D] Argon

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20. Carbon Dioxide from the air is trapped by which of the following parts of the plant?
[A] Petals
[B] Root hairs
[C] Stomata
[D] Mitochondria

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