During the dry season in Antigua, a farmer observed that the leaves of his pigeon pea plants had curled inward. This adaptation helps the plant by:

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Question

During the dry season in Antigua, a farmer observed that the leaves of his pigeon pea plants had curled inward. This adaptation helps the plant by:

Accepted Answer

Reducing water loss by trapping humid air near stomata — Award 1 mark for identifying this xerophytic adaptation. Curled leaves create a microenvironment of humid air around stomata, reducing the diffusion gradient for water vapour. A is incorrect — curling reduces, not increases, exposed surface area. C is incorrect — reduced light exposure decreases photosynthesis. D is incorrect — curling does not increase CO₂ entry.

Answer

Reducing water loss by trapping humid air near stomata

Answer

Allowing more carbon dioxide to enter the leaf

Answer

Increasing the surface area for light absorption

Answer

Increasing the rate of photosynthesis

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