WAEC Biology 2013 Question 28

Question 28

Transport in Plants

Which of the following factors is likely to increase the rate of transpiration in plants?

  1. A.A reduction in the number of stomata per unit surface area.
  2. B.Increase in humidity around the leaves of plants.
  3. C.An increase in the surface area to volume ratio.
  4. D.Removal of leaves from plant.
Show the answer and explanation

Answer: C (An increase in the surface area to volume ratio.)

Explanation

A larger exposed surface relative to volume means more surface from which water can evaporate.