A student observed grass and Hibiscus plants | vedclass

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(D) - presence of bulliform cells in the grass leaves.In grasses,certain adaxial epidermal cells along the veins modify themselves into large,empty,co

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presence of bulliform cells in the grass leaves

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(D) - presence of bulliform cells in the grass leaves.In grasses,certain adaxial epidermal cells along the veins modify themselves into large,empty,colourless cells. These are called bulliform cells.When the bulliform cells in the leaves have absorbed water and are turgid,the leaf surface is exposed.When they are flaccid due to water stress,they make the leaves curl inwards to minimise water loss.

$A$ student observed grass and $Hibiscus$ plants in his garden during noon. To his surprise,only the leaves of grass were found rolled inwards. The reason could be

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