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If stomata of a plant remain open for a long time during the day, what benefit and risk are both possible?

Answer and explanation

Correct answer: Carbon dioxide entry will increase, but water loss will also increase

The governing concept is the dual role of stomata in gas exchange and transpiration. Open stomata allow carbon dioxide to diffuse into the leaf, supporting photosynthesis during daylight. However, the same openings permit water vapour to diffuse out, increasing transpiration and possible water loss, especially in dry conditions. Therefore option A correctly states both effects; the other choices combine unrelated animal organs or unsupported plant changes.

Related tags

StomataPhotosynthesisTranspirationLife ProcessesWorld Of LivingScienceClass 10 Mcq

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