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General Knowledge :: Biology

  1. Pigmentation of skin is due to

  2. A.

     lymphocytes

    B.

     monocytes

    C.

     leucocytes

    D.

     melanocytes

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  3. Norepinephrine increases

  4. A.

     respiration

    B.

     urine production

    C.

     saliva production

    D.

     blood pressure

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  5. Night blindness is cause by lack of which vitamin?

  6. A.

     Vitamin A

    B.

     Vitamin B

    C.

     Vitamin C

    D.

     Vitamin D

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  7. Monocot root differs from dicot root in having

  8. A.

     open vascular bundles

    B.

     scattered vascular bundles

    C.

     well developed pith

    D.

     radially arranged vascular bundles

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  9. Radioactivity is a phenomenon of the spontaneous emission of

  10. A.

     protons (alpha particles)

    B.

     electrons (beta particles)

    C.

     gamma rays (short wave electromagnetic waves)

    D.

     All of the above

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  11. Organic Substances which, in very small amounts, control growth and development called

  12. A.

     vitamins

    B.

     hormones

    C.

     enzymes

    D.

     None of the above

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  13. Our major foods, fibres, spices, fruits and beverage crops are

  14. A.

     flowering plants

    B.

     gymnosperms plants

    C.

     pteridophytes

    D.

     bryophytes

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  15. Movements due to light are shown by

  16. A.

     flowering plants

    B.

     lower plants

    C.

     all land plants

    D.

     all the plants

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  17. Outer covering of virus made up of protein is

  18. A.

     capsid

    B.

     coat

    C.

     virion

    D.

     viriod

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  19. Radish is a

  20. A.

     bulb

    B.

     conn

    C.

     modified root

    D.

     tuber

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