Question

Q16. Shreya and her family has come back after fifteen days  back home, after a long vacation. They have kept a plant in a room which totally dark but properly ventilated. Shreya found plant shed some of its leaves and turn pale yellow.
      I.         Absence of which process hampered the growth of the plant?              (1)                                   
    II.         If the leaves are tested with iodine solution  it did not show the presence of starch ,justify your answer.                                                                            (1)
  III.         All photosynthetic plant follow Calvin pathway, which enzyme  must be present in a plant for fixation of carbon dioxide?                                                                                          (1)
  IV.         Which plant hormone leads to falling ofQ16. Shreya and her family has come back after fifteen days  back home, after a long vacation. They have kept a plant in a room which totally dark but properly ventilated. Shreya found plant shed some of its leaves and turn pale yellow.
      I.         Absence of which process hampered the growth of the plant?              (1)                                   
    II.         If the leaves are tested with iodine solution  it did not show the presence of starch ,justify your answer.                                                                            (1)
  III.         All photosynthetic plant follow Calvin pathway, which enzyme  must be present in a plant for fixation of carbon dioxide?                                                                                          (1)
  IV.         Which plant hormone leads to falling of leaves?                                         (1) leaves?                                         (1)​

Answer 1

Explanation:

1: absence of sunlight there is no photosynthesis takes place

2:: as there is no photosynthesis process there is no starch and energy formed

3:: cytokinins

4:: ABA( abscisic acid hormones)

Answer 2

Answer:

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