Question

what is imbibition.
and give its use.
features.

Answer 1

Answer:

Imbibition is a special type of diffusion that takes place when water is adsorbed by solids-colloids causing an increase in volume. Examples include the absorption of water by seeds and dry wood. If there is no pressure due to imbibition, seedlings would not be able to emerge from soil.

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Explanation:

Answer 2

Answer:

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Definition

Imbibition is a type of diffusion where the water is absorbed by the solid particles called colloids, without forming a solution causing an enormous increase in volume. To define, the absorption of water by hydrophilic colloids is known as imbibition.

Use

• It helps in the germination of seeds.
• Facilitates absorption of water by the roots of the plants.

Features

• Water Potential: The water potential of an imbibant is negative. Water has the highest water potential (0).

• Increase in Volume: During imbibition, the volume of the imbibant                                                                  increases. For eg., swelling of the soaked seeds, swelling of wooden frames during rains.
• Water Potential Gradient: When a dry imbibant comes in contact with water, a steep water potential gradient is created. Water diffuses from the higher potential into the imbibant.
• Heat of Wetting: Heat energy is released during imbibition. This is known as the heat of wetting.
• Adsorption: The imbibant holds the imbibate by adsorption. It is an attractive force between two substances.