The Process of Imbibition Involves
Option 3 is the right answer.
Imbibition is the process of absorption of water by substances without forming a solution. Swelling of seeds when immersed in water is an example of imbibition. Imbibition is the temporary increase in the volume of the cell. Imbibition is a passive transport of materials that does not require energy during the process.
The movement of water into the plant parts continues until a dynamic equilibrium is attained. Imbibition of water increases the volume of the imbibant, which results in imbibitional pressure. This pressure can be of tremendous magnitude. This fact can be demonstrated by a method used to split rocks. Here, dry wooden stalks are inserted into the crevices of the rocks and soaked in water, a technique used by early Egyptians to cleave stone blocks.