question_answer 19)

The lower surface of leaf will have more number of stomata in a   (a) dorsiventral leaf        (b) isobilateral leaf           (c) Both (a) and (b)            (d) None of these

Answer:

                  (a) In dorsiventral leaf, the number of stomata will be more on lower surface. This featureenhances gas exchange between leaf surface and the atmosphere for the processesof photosynthesis and respiration. Whereas in isobilateral leaf, stomata are uniformly distributed oh both the surfaces.