Living World of Plants - Plant Physiology Two Marks Questions

9th Standard

    Reg.No. :
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Science

Time : 00:45:00 Hrs
Total Marks : 20
    10 x 2 = 20
  1. Give an example for a plant whose leaf shows a mesmerizing movement.

  2. Write the scientific terms used to represent the following:
    a) Growing of roots towards the gravity.
    b) Bending of roots towards the water.

  3. Give the technical terms for the following:
    a) Growth dependent movement in plants.
    b) Growth independent movement in plants.

  4. Study the pictures below and then complete the table by putting a plus (+) if the shoot or root grows towards the stimulus and a minus (-) if it grows away from it.

    Stimulus Light Gravity
    Shoot + -
    Root ? +

  5. Name the movement seen in Pneumatophores of Avicennia

  6. Give an example for negative hydrotropism.

  7. Fill in the blanks:
    6CO2+________\(\overset { Sunlight }{ \underset { Chlorophyll }{ \longrightarrow } } \) _____ +6H2O+6O2 \(\uparrow\)

  8. Which gas is evolved during photosynthesis?

  9. Give an example for micronutrients.

  10. Complete the following table with the different types of tropism:

    Stimulus Gravity Unilateral light Water
    Tropism Geotropism ? Hydrotropism
    Response Shoot    ? Positive No response
      Root Positive   ? ?

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