Biology for IGCSE & O level - Plant Nutrition (Section 2 - No. 34)
What happens during the opening and closing of stomata?
Stomata open during the day, closing in the night.
Stomata open due to water entering guard cells and close due to water leaving.
Stomata open at night and close during the day.
Stomata are always open and closed according to the wind.
Explanation
Stomata open when guard cells are turgid (full of water) and close when guard cells lose water.
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