Question

Define – Imbibition

Hint:

Imbibition is critical for the initial absorption of water in seeds and root hairs, allowing for plant growth.

Answer 1

Step 1: Definition of Imbibition.
Imbibition is the process in which water is absorbed by solid or porous materials, such as seeds or dry wood, causing them to swell. It is a passive process and occurs due to the affinity of the substance for water.
Step 2: Conclusion.
Imbibition is the absorption of water by materials, particularly in seeds, leading to their rehydration and germination.
ii. Explain how imbibition helps root hairs in the adsorption of water.
Solution:
Step 1: Role of Imbibition in Root Hairs.
Imbibition is essential for root hairs as they absorb water from the soil. The root hairs are in contact with water in the soil, and imbibition allows them to absorb the water efficiently. The swelling of the root hair cells facilitates the movement of water into the plant.
Step 2: Conclusion.
Imbibition helps root hairs by enabling them to absorb water from the soil, facilitating plant growth and nutrient uptake.