Question

Imbibition is considered as the first step in seed germination. When seeds are soaked in water, imbibition occurs because:

• A. DPD of seed is comparatively much low
• B. OP of water is much high
• C. OP inside the seed is much low
• D. DPD of seeds is very much low

Answer 1

Answer:

D. DPD of seeds is very much low

• Solids absorb water through a special type of diffusion that causes a significant volume increase in the solids.

• This special type of diffusion is known as imbibition.

• Water potential gradient between the absorbent and the liquid imbibed is necessary for imbibition.

• Due to imbibition, seeds swell when submerged in water.

• The volume of the cell temporarily increases as a result of this swelling, which doesn't require energy because materials are moved passively.