Question

what are the functions of stomata . ch 6 class 9

Answer 1

Hey,

Stomata are the small pores in leaves of plants. They act as lungs. Stomata take in carbon dioxide and give out oxygen during photosynthesis and visa versa during respiration, thus enabling the exchange of gasses. Stomata​ ( singular stoma) are surrounded by guard cells, which opens and closes during exchange of gasses. The process of transpiration also takes place through stomata, wherein excess water is given out by the plant into the atmosphere.

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Answer 2

Answer:

The leaves of plants have small pores on top of the epidermis cell called stomata which are surrounded by a pair of guard cells. The stomata open and close according to the guard cells. I

Explanation:

Function of stomata

1. Gaseous exchange – stomatal opening/closing in plants and surrounding gaseous exchange.
2. It helps in transpiration and removes excess water in the form of water vapour.
3. Closing the pores at night prevents water from leaking out of the pores.
4. It regulates the moisture balance by opening and closing depending on weather conditions.
5. The stomata are responsible for the absorption of carbon dioxide and release of oxygen during photosynthesis.

The opening and closing of the stomata is determined by the turgor pressure in the guard cells. This is due to the osmotic flow of water through the guard cells. The opening of the stomata occurs when the guard cells become sluggish. The loss of water in the guard cells can cause them to become dry and loose, leading to clogged stomata.

Stomata are also found on the stems or other parts of some plants. The stomata are important in photosynthesis and gaseous exchange, they control the rate of transpiration through opening and closing.