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 both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: C
Solution :
At very low\[C{{O}_{2}}\]concentration photosynthesis is strongly limited by the low \[C{{O}_{2}}\]while respiratory rates are unaffected. As a result there is a negative balance between \[C{{O}_{2}}\]fixed by photosynthesis and\[C{{O}_{2}}\] produced by respiration and a net efflux of \[C{{O}_{2}}\]compensation point. By increasing the atmospheric concentration of \[C{{O}_{2}}\]at which photosynthesis just compensate for respiration is referred to as \[C{{O}_{2}}\]compensation point.
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