Question

Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following :
a.Closure of stomata
b.Flaccidity of bulliform cells
c.Shrinkage of air spaces in spongy mesophyll
d.Tyloses in vessels

Answer 1

(b) Flaccidity of bulliform cells

Explanation:

Bulliform cells are a type of adaxial epidermal cell found in monocots. They become flaccid as a result of water loss during drought or water stress. The leaf curls inwards to reduce water loss.