Question : What happens to the guard cells when water flows into them?
Option 1: The guard cells close
Option 2: Stomatal pores open
Option 3: Stomatal pores shrink
Option 4: Stomatal pores close
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Correct Answer: Stomatal pores open
Solution : The correct option is to Stomatal pores open.
When water enters a plant's guard cells, they become turgid, meaning they fill with water and swell. The guard cells alter form as their turgidity increases. Guard cells have a bean-shaped structure that permits them to open and close the stomatal pores. This stomatal pore opening provides gas exchange between the plant and its surroundings. It specifically enhances the absorption of CO 2 for photosynthesis as well as the release of oxygen (O 2 ) and water vapour.
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