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.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is incorrect because stomata typically close during hot weather to prevent excessive water loss via transpiration.
Step 2
B. They open in cold weather to decrease transpiration.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This is also incorrect, as stomata generally close to retain moisture during colder conditions.
Step 3
C. They open in hot weather to decrease evaporative cooling.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is misleading. While stomata may open in hot weather, it is primarily to facilitate gas exchange, not to decrease evaporative cooling.
Step 4
D. They close in cold weather to decrease evaporative cooling.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is correct. Stomata close in cold weather to reduce water loss through transpiration, thus maintaining water balance within the plant.
