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Question
Desert grasses often roll their leaves due to presence of:
Desert grasses often roll their leaves due to presence of:
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Solution
The correct option is C Bulliform cells
Bulliform cells are types of epidermal cells present in the upper surface of monocot leaves. They are responsible for curling up of leaves during water stress, to prevent loss of water due to transpiration. Desert grasses are monocots and hence have bulliform cells.
Trichomes are outgrowths of the epidermal surface of plants. They also function in preventing water loss along with protecting the plants from herbivores. They are present in a wide variety of plants, not just monocots. Also, they are not responsible for rolling up of leaves.
In desert plants, spines are modified leaves which prevent loss of water.
Bulliform cells are types of epidermal cells present in the upper surface of monocot leaves. They are responsible for curling up of leaves during water stress, to prevent loss of water due to transpiration. Desert grasses are monocots and hence have bulliform cells.
Trichomes are outgrowths of the epidermal surface of plants. They also function in preventing water loss along with protecting the plants from herbivores. They are present in a wide variety of plants, not just monocots. Also, they are not responsible for rolling up of leaves.
In desert plants, spines are modified leaves which prevent loss of water.
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