Question

Complete the following statements by choosing the correct alternative out of those given in brackets.

________ transpiration is a way of maximum water loss by a plant.

• A. Cuticular
• B. Lenticular
• C. Stomata

Answer 1

The correct option is C

Stomata

The correct option is C

Explanation of the correct option :

1. Stomata are minute openings present on both surfaces of leaves.
2. Stomatal transpiration accounts for maximum transpiration in young plants.
3. It accounts for a maximum of about 90% of transpiration in plants.
4. They facilitate the exchange of gases between the leaf and the atmosphere.

Explanation of the incorrect option:

Option A:

1. Cuticle is a waxy layer secreted by the epidermis of the leaves and young stems of the plant.
2. Cuticle is an impermeable covering present on the leaves and stem.
3. Cuticular transpiration accounts for only 3-10% of the total transpiration.

Option B:

1. A lenticel is a porous tissue comprising cells with huge intercellular spaces.
2. These small openings in the bark enable air to reach the remaining parts of the root system.
3. Lenticels occur in the woody branches of the trees.
4. They are special openings on the older stem in place of the stomata.
5. lenticular transpiration accounts for about 0.1% of the total transpiration.

Final answer: Stomata transpiration is a way of maximum water loss by a plant.