Question

12. Motor cells help in
(a) inward rolling of leaves
(b) transpiration
(c) guttation (d) all of these
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Answer 1

Answer:

Explanation:

(D) ALL OF THESE

Answer 2

Answer:

A. inward rolling of leaves

Explanation:

Bulliform cells or motor cells are large, bubble-shaped epidermal cells that form clusters at the upper leaf surface of many types of grass. The loss of turgor pressure in these cells causes the leaves to roll through stress. The folded leaves provide less exposure to sunlight, so they are less heated, thus reducing evaporation and preserving the water left in the plant. So, motor cells help in the inward rolling of leaves and not in transpiration or guttation.