2. (A): The opening and closing of the pore is a function of the guard cells
(R) Stomatal pores are the site for exchange of gases by diffusion.
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The opening and closing of the pore is a function of the guard cells -yes it's true
(R) Stomatal pores are the site for exchange of
The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.
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