When the conditions are dry,a grass leaf curl | vedclass

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(D) In many monocotyledonous leaves,the adaxial (upper) epidermis contains specialized large,thin-walled,and empty cells known as $Bulliform$ cells.Th

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Bulliform cells

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(D) In many monocotyledonous leaves,the adaxial (upper) epidermis contains specialized large,thin-walled,and empty cells known as $Bulliform$ cells.These cells are responsible for the rolling and unrolling of the leaf.When the water content is high,these cells become turgid,causing the leaf to open.Conversely,under dry conditions,these cells lose water and become flaccid,which causes the leaf to curl inward to minimize the surface area exposed to the atmosphere,thereby reducing water loss through transpiration.

When the conditions are dry,a grass leaf curls inward to minimize water loss due to the pressure of

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