Exercise
Form 5: Stomata Structure and Guard Cell Regulation
Study the anatomical structure of stomata and how guard cells regulate their opening and closing. Learn how these microscopic pores control gas exchange and water loss.
Questions
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MultiChoice
What pair of specialized epidermal cells controls the size of a stoma?
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MultiChoice
What structural characteristic of guard cell walls causes them to bow outward when turgid?
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MultiChoice
What causes guard cells to become turgid and open the stoma?
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MultiChoice
When guard cells lose water and become flaccid, what happens to the stoma?
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MultiChoice
Which ion is actively pumped into guard cells to trigger stomatal opening?
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MultiChoice
Why do stomata typically open during daylight hours?
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MultiChoice
Under what environmental stress condition will a plant close its stomata during daytime?
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MultiChoice
On which side of leaves are stomata usually more abundant in most dicot plants?
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MultiChoice
Why are stomata less numerous on the upper surface of many leaves?
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MultiChoice
What plant hormone is produced during drought stress to trigger stomatal closure?
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MultiChoice
What gas leaves the stoma as a waste product of photosynthesis?
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MultiChoice
What happens to gas exchange when stomata close completely?