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General Knowledge :: Biology

  1. Pigmentation of skin is due to

  2. A.
    lymphocytes
    B.
    monocytes
    C.
    leucocytes
    D.
    melanocytes

  3. Norepinephrine increases

  4. A.
    respiration
    B.
    urine production
    C.
    saliva production
    D.
    blood pressure

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

  6. A.
    Vitamin A
    B.
    Vitamin B
    C.
    Vitamin C
    D.
    Vitamin D

  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

  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

  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

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

  14. A.
    flowering plants
    B.
    gymnosperms plants
    C.
    pteridophytes
    D.
    bryophytes

  15. Movements due to light are shown by

  16. A.
    flowering plants
    B.
    lower plants
    C.
    all land plants
    D.
    all the plants

  17. Outer covering of virus made up of protein is

  18. A.
    capsid
    B.
    coat
    C.
    virion
    D.
    viriod

  19. Radish is a

  20. A.
    bulb
    B.
    conn
    C.
    modified root
    D.
    tuber