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Question

Many grass leaves are capable of folding and unfolding due to

A
Parallel veins
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B
Isobilateral nature
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C
Thin lamina
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D
Bulliform cells
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Solution

The correct option is D Bulliform cells

Many grass leaves, folds during drought conditions and unfolds during moisturized conditions. It is due to the presence of large, thin-walled cells present on the adaxial side of the upper epidermis, called Bulliform cells.

So, the correct option is ‘Bulliform cells’.


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