9th Standard English Medium Science Subject Plant Physiology Book Back 5 Mark Questions with Solution Part - II

9th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5
  1. The bending of root of a plant in response to water is called _________ 

    (a)

    thigmonasty

    (b)

    phototropism

    (c)

    hydrotropism

    (d)

    photonasty

  2. The root of the plant is __________.
    i) positively phototropic but negatively geotropic
    ii) positively geotropic but negatively phototropic
    iii) negatively phototropic but positively hydrotropic
    iv)negatively hydrotropic but positively phototropic

    (a)

    (i) and (ii)

    (b)

    (ii) and (iii)

    (c)

    (iii) and (iv)

    (d)

    (i) and (iv)

  3. The non-directional movement of a plant part in response to temperature is called ________.

    (a)

    thermotropism

    (b)

    Thermonasty

    (c)

    chemotropism

    (d)

    thigmonasty

  4. During photosynthesis plants exhale _______. 

    (a)

    Carbon dioxide

    (b)

    oxygen

    (c)

    hydrogen

    (d)

    helium

  5. A plant is kept in a dark room for about 24 hours before conducting any experiment on photosynthesis in order to _______.

    (a)

    remove chlorophyll from the leaf

    (b)

    remove starch from the leaves

    (c)

    ensure that photosynthesis occurred

    (d)

    to prove transpiration

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