What is a stoma?
Q: What is a stoma?
A: A stoma is a tiny opening or pore found on plant leaves and stems.
Q: Where are stomata found in plants?
A: Stomata are mostly found on the under-surface of plant leaves.
Q: What is the main function of stomata?
A: The main function of stomata is gaseous exchange, which involves the intake of carbon dioxide and the release of oxygen.
Q: What is the process of transpiration in plants?
A: Transpiration in plants is the process by which water vapor goes into the atmosphere through the pores of stomata.
Q: How is the size of the stoma opening adjusted?
A: The size of the stoma opening is adjusted by a pair of cells called guard cells, which can open or close the pore.
Q: How are guard cells opened?
A: Guard cells are opened by pumping protons (hydrogen ions, H+) into them, causing water to enter and fill the cells, which then open the stoma.
Q: Why do plants need stomata?
A: Plants need stomata for the exchange of gases, particularly for the intake of carbon dioxide and the release of oxygen, as well as for the process of transpiration.
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