Biology

Anatomy of Flowering Plants

The Tissue System

Which one of the following option is true about bulliform/ mot

Question

Hard

Solving time: 5 mins

Which one of the following option is true about bulliform/ motor cell ?

It is seen in grasses.

It is large-sized, thin-walled colourless, vacoulate cells on the adaxial surface.

It helps in rolling of leaf to minimise water loss when it is flaccid.

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Text solutionVerified

Bulliform cells or the motor cells are the modified epidermal cells present on the upper surface or the adaxial surface of the monocot leaf (the grasses). They are colourless, large-sized and vacuolated cells. They regulate the rolling of leaves to prevent the loss of water. When water is adequately present, they become turgid and keep the leaf open and exposed. When there is scarcity of water, the become flaccid and roll-up the leaf to prevent the loss of water.

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