Assertion. The atmospheric concentration of `CO_(2)` at which photosynthesis just compensates for respiration is referred to as `CO_(2)` compensation point.

Reason. `CO_(2)`-compensation point is reached when the amount of `CO_(2)` uptake is less than that generated through respiration because the level of `CO_(2)` is more than that required for achieving `CO_(2)`-compensation point.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark a
B. lf both Assertion & Reason are true but the reason is no t the correct explanation of the assertion, then mark b
C. If Assertion is true statement but Reason is false, then mark c
D. If both Assertion and Reason are false statements, then mark d.

Answer

C

Explanation

At very low `CO_(2)` concentration photoynthesis is strongly limited by the low `CO_(2)` while respiratory rates are unaffccted. As a result there is negative balance between `CO_(2)` fixed by photosynthesis and `CO_(2)` produced by respiration and a net efflux of `CO_(2)` from the plant By increasing the atmospheric concentration of `CO_(2)` at which photosynthesis just compensate for respiration is referred to as `CO_(2)` compensation point.