Question

The imbibition in seeds takes place during seed germination because of

The imbibition in seeds takes place during seed germination because of

the loss of water due to the high water potential of the seed.

the loss of water due to the low water potential of the dry seed.

the uptake of water due to the low water potential of the dry seed.

the uptake of water due to the high water potential of the dry seed.

Answer 1

Answer: The uptake of water due to low water potential of the dry seed.

Explanation:

IMBIBITION:

The process of absorption of water by hydrophilic solid particles of a substance without forming a solution is called imbibition. It is a special type of diffusion, as water moves along its concentration gradient. Therefore, the water absorbed by solid substances or colloids results in an enormous increase in their volume.

Such solid substances which take part in imbibition are called imbibants.

Examples: seeds, dry wood

The water which is imbibed is known as imbibed. Two conditions are necessary for the individual to occur: water potential gradient between the surface of absorbent and the liquid imbibed, affinity between the absorbent.

Imbibition plays an important role in the seeds, rupturing of the seed coat. The emergence of seedlings is due to high imbibition pressure developed by the seed kernel.

SEED GERMINATION:

The germination of seeds depends on the physical process called imbibition. It is the uptake of water due to low water potential on the dry seed.

Imbibition of water causes the seed to expand and rupturing of its seed coat.