Question

Loss of water from the plants in the form of vapour state is known as

• A. Imbibition
• B. Transpiration
• C. Translocation
• D. Transportation

Answer 1

The correct option is B

Transpiration

The correct option is B.

Explanation of the correct option:

1. Transpiration is defined as the physiological loss of water in the form of water vapor.
2. It also evaporates from the surfaces of leaves, flowers, and stems.
3. Transpiration has two main functions namely, cooling the plant and pumping water and minerals to the leaves for photosynthesis.
4. Leaves contain tiny pores called stomata where loss of water vapour takes place.

Explanation of the incorrect option:

Option A:

Imbibition is the initial step in seed germination and is dominant in the initial stage of water absorption by roots.

Option C:

Translocation means conduction of food and water from one place to other parts of the plant.

Option D:

Transportation means movement of food, essential nutrients and water to other parts of the plant for its survival.

Final answer: Loss of water from the plants in the form of vapour state is known as transpiration.