Question

A leaf has labeled as A has 20 stomata. A leaf labeled as B has 10 stomata. Which of the following statement defines the percentage of water vapour released by both the leaves?

• A. Leaf A releases more water vapour than leaf B.
• B. Leaf A releases less water vapour than leaf B.
• C. Leaf A equals leaf B
• D. None of the above

Answer 1

The correct option is D None of the above

The number of stomata alone cannot decide the percentage of water vapour released. Certain other factors like their opening and closing or their location on the leaf as well as the temperature and light conditions determine the release of water vapour by stomata.

Stomata present in the lower epidermis are mostly in shade so they cause less evaporation.

So the correct answer is 'None of the above'.