Transpiration ratio is the ration of moles of `H^(2)O` transpired/ moles of `CO_(2)` fixed. This ratio is measure of

Options

A. The efficiency of guard cells on stomatal movement
B. The effectiveness of stomata is maximizing photosynthesis while minimizing water loss
C. Distinguishing a xerophyte from a glycophyte
D. Stomatal pore size of the leaves

Answer

B

Explanation

Transpiration ratio measures the degree by which plants are able to moderate water loss while allowing sufficient `CO_(2)` uptake for photosynthesis can be evaluated by transpiration ratio. It is defined as the amount of water transpired by plant divided by the amount of carbon dioxide assimilated by photosynthesis