When stomata open, it is typically during daylight. They do so to bring carbon dioxide into the leaf. This carbon dioxide that is brought in by the stomata is then converted into food energy that assists in photosynthesis.
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what happens when stomata open
Stomata open to allow gaseous exchange between the plant and the atmosphere. Carbon dioxide uptake resumes and metabolic processes such as photosynthesis are facilitated. Loss of water vapor is no longer prevented as transpiration continues....