Grass leaves can fold and unfold because they

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6.Anatomy of Flowering Plants

medium

Grass leaves can fold and unfold because they

Have bulliform cells

Are long and thin

Have parallel venation

Are isobilateral

Solution

(a) Some of the cells in the leaves of grasses are comparatively very large, called bulliform or motor cells. It is hygroscopic in nature. $e.g.$, Ammophila.

They are thin-walled and contain big central vacuoles filled with water. They play an important role in the folding and unfolding of leaves.

Standard 11

Biology

Describe internal structure of Isobilateral (Monocotyledonous) leaf.

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This is absent in monocot leaf

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In Dicot leaf

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Grass leaves curl Inwards during very dry weather. Select the most appropriate reason from the following

easy

(NEET-2019)

During water stress, the bulliform cells
$(a)$ Become turgid
$(b)$ Become flaccid
$(c)$ Make the leaves curl inwards
$(d)$ Make the leaf surface exposed
The correct options are

medium

Grass leaves can fold and unfold because they

Solution

Similar Questions

Describe internal structure of Isobilateral (Monocotyledonous) leaf.

This is absent in monocot leaf

In Dicot leaf

Grass leaves curl Inwards during very dry weather. Select the most appropriate reason from the following

During water stress, the bulliform cells $(a)$ Become turgid $(b)$ Become flaccid $(c)$ Make the leaves curl inwards $(d)$ Make the leaf surface exposed The correct options are

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During water stress, the bulliform cells
$(a)$ Become turgid
$(b)$ Become flaccid
$(c)$ Make the leaves curl inwards
$(d)$ Make the leaf surface exposed
The correct options are