How do stomata maintain water balance in plants?
A - HSC - SSCE Biology - Question 7 - 2020 - Paper 1
Question 7
How do stomata maintain water balance in plants?
A. They close in hot weather to decrease transpiration.
B. They open in cold weather to decrease transpiration.
C... show full transcript
Worked Solution & Example Answer:How do stomata maintain water balance in plants?
A - HSC - SSCE Biology - Question 7 - 2020 - Paper 1
Step 1
A. They close in hot weather to decrease transpiration.
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Answer
This statement is incorrect. In hot weather, stomata typically open to allow for gas exchange and transpiration, which helps cool the plant.
Step 2
B. They open in cold weather to decrease transpiration.
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Answer
This statement is incorrect. Stomata usually close in cold weather to reduce transpiration and conserve water.
Step 3
C. They open in hot weather to decrease evaporative cooling.
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Answer
This statement is incorrect. Stomata open in hot weather, but primarily to enhance transpiration, which helps in evaporative cooling.
Step 4
D. They close in cold weather to decrease evaporative cooling.
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Answer
This statement is correct. Stomata close in cold weather to reduce water loss and maintain water balance in the plant.
