Photosynthesis In Higher Plants Question 239
Question: Assertion : Plants utilize 5-10% of the absorbed water in photosynthesis. Reason : Reduced leaf hydration decrease the photosynthesis.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If the assertion is false but reason is true
Show Answer
Answer:
Correct Answer: D
Solution:
Less than 1% of the total water absorbed is utilized in photosynthesis.
The rest is lost in transpiration.
Even a slight increase in transpiration reduces the leaf hydration that cuts down photosynthesis by causing stomatal closure and hence decreased $ CO_2 $ absorption, loss of leaf turgidity, reduced absorption of solar radiations and decrease enzymatic activity.
BETA
