Question

Hypostomatous (stomata on the lower surface) plants are usually

• A. Aquatic plants
• B. Semi-aquatic plants
• C. Non-aquatic plants
• D. All of the above

Answer 1

The correct option is C Non-aquatic plants

• A leaf is said to be hypostomatous where stomata are present on abaxial surface only (lower surface). Most tree species of dicotyledons possess such leaves. Ex. Ficus, Nerium etc.
• Hypostomatous plants are non-aquatic plants in which stomata are present on the lower surface because their function is to regulate the amount of water in the leaf and being on the bottom prevents it from absorbing too much water in the rain or transpirating too much in the sun.

So, the correct answer is 'Non-aquatic plants'.