Where does gas exchange occur in a plant?

Gas exchange in a plant occurs through the tiny pores called stomata found in the leaves of plants.

Gas exchange occurs during photosynthesis. Carbon dioxide is taken from the atmosphere through the stomata and oxygen is released as a waste product.  Gas exchange is essential for the  plant's survival.

Normally stomata open when the light strikes the leaf in the morning and close during the night. Opening and closing of stomata is guided by two guard cells which are found on each side of the stomata.  When the guard cells become turgid,  they bend into a crescent shape allowing the stomata to open. When they lose turgor pressure, they become flaccid and return to their original shape and the stomata close.

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

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you should wear a lead protective shield when having teeth x-rays

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-lavira : )