how to plant get carbon dioxide from food by photosynthesis
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Answer:On the surface of the leaves of the plants there are a large number of tiny pores known as stomata or stoma. For photosynthesis green plants take carbon dioxide from the air. The carbon dioxide enters the leaves of the plant through the stomata present on their surface
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On the surface of the leaves of the plants there are a large number of tiny pores known as stomata or stoma. For photosynthesis green plants take carbon dioxide from the air. The carbon dioxide enters the leaves of the plant through the stomata present on their surface. Each stomatal pore is surrounded by a pair of guard cells. The opening and closing of the pores of stomata is controlled by the guard cells only. When water flows into the guard cells, they swell, become curved and cause the pore to open. On the other hand, the guard cells lose water; they shrink, become straight and close the stomatal pore. A large amount of water is also lost from the cells of the plant leaves through open stomatal pores. So, when the plant does not need carbon dioxide and wants to conserve water, the stomatal pores are closed.
Stomata pores in the leaves
During photosynthesis, the oxygen gas produces goes out through the leaves of the stomatal pores. Do you know that stomata are also present in the green stems or shoots of a plant? So, we can say that green stems or shoots also shows photosynthesis. In most broad-leaved plants, the stomata occur only in the lower surface of the leaf but in narrow-leaved plants, the stomata are equally distributed on both the sides of the leaf. In aquatic plants or plants that live in water use carbon dioxide gas dissolved in water for carrying out photosynthesis.
how carbon dioxide absorb by plants
So, we can say that stomata pores allow the movement of gases in and out of plant cells. Therefore, the gaseous exchange in plants takes place through the stomata in leaves and other green parts.
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