Q.
A. Ratio between stomata and leaf surface area
B. Ratio between stomata per unit area and sum of epidermal cells and stomata of that unit are
C. Ratio between epidermal cells and stomata of that unit area
D. Ratio between sum of stomata and epidermal cells of a unit area and stomata of that area.
E. None of the above
Correct choice: B
Explanation: