Biology for IGCSE & O level - Plant Nutrition (Section 6 - No. 2)
What happens to the stomata when a leaf is in hot and dry conditions?
They open wider to absorb more carbon dioxide.
They close to prevent water loss.
They remain unchanged as temperature does not affect them.
They expand to allow more oxygen to exit.
Explanation
In hot, dry weather, the stomata close to reduce water loss through transpiration.
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