Question

Assertion : in the daytime, CO2 generated during respiration is used up for photosynthesis.
Reason : There is no CO2 release during day

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both Assertion and Reason are false

Answer 1

Answer:

(a) Both A and R are true and R is the correct explanation of A.

hope it helps you [and others too] :)

Answer 2

A is true but R is false.

• Respiration is the process in plants that occurs throughout the day and even at night. But the process of photosynthesis happens only in the daytime because it is a light-dependant reaction because in the day sunlight is present.
• So, photosynthesis and respiration both can occur during the day but dark reactions and respiration can occur only at night.
• As carbon dioxide is released and oxygen is taken up in respiration and vice-versa in photosynthesis.

Hence, R is wrong because respiration can occur in the daytime also so, carbon dioxide can be released. So, option c is correct.