Leaves of many grasses are capable of folding and unfolding because

1.	Leaves of many grasses are capable of folding and unfolding because
A.	their mesophyll is not differentiated into palisade and spongy parenchyma
B.	they have stomata on both sides of the leaf
C.	they have high levels of silica
D.	they have specialised bulliform cells
Answer» E.

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Leaves of many grasses are capable of folding and unfolding because

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