Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: \[{{C}_{4}}\] photosynthetic pathway is more efficient than the \[{{C}_{3}}\] pathway. Reason: Photorespiration is suppressed in \[{{C}_{4}}\] plants.A) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
C) If Assertion is true statement but Reason is false.
D) If both Assertion and Reason are false statements.
Correct Answer: A
Solution :
\[{{C}_{4}}\] pathway is more recently evolved than \[{{C}_{3}}\] pathway and involves a superior \[C{{O}_{2}}\] fixing mechanism. \[{{C}_{4}}\] pathway is more efficient than \[{{C}_{3}}\] pathway due to following reasons: Maximum rate of \[C{{O}_{2}}\] fixation More tolerance for dry conditions. \[C{{O}_{2}}\] is fixed rapidly. Photo respiration is suppressed.
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