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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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