Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following.
Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following.
Closure of stomata
Flaccidity of bulliform cells
Shrinkage of air spaces in spongy mesophyll
Tyloses in vessels
Solution
Bulliform cells are large, bubble-shaped epidermal cells that occur in groups on the upper surface of the monocot leaves. These cells are present on the upper surface of the leaf. They are generally present near the midvein. These are responsible for the curling of leaves in monocots.