With regard to C3 and C4 plants, consider the following statements: (1) C4 plants are twice as efficient as C3 plants in terms of fixing carbon. (2) C4 plants lose double the amount of water than a C3 plant for the same amount of CO2 fixed. Which of the statement(s) given above is/are correct?

Question

With regard to C3 and C4 plants, consider the following statements: (1) C4 plants are twice as efficient as C3 plants in terms of fixing carbon. (2) C4 plants lose double the amount of water than a C3 plant for the same amount of CO2 fixed. Which of the statement(s) given above is/are correct? (A) (1) only (B) (2) only (C) both (1) and (2) (D) neither (1) nor (2)

Tardigrade Admin · Accepted Answer

The evolution of the C 4 photosynthetic system is probably one of the strategies for maximising the availability of CO 2 while minimising water loss. C 4 plants are twice as efficient as C 3 plants in terms of fixing carbon. C 4 plant loses only half as much water as a C 3 plant for the same amount of CO 2 fixed.