Imbibition refers to which process?

Imbibition refers to which process?

• A. The loss of water from leaves
• B. The initial absorption of water by a seed
• C. The uptake of nutrients by roots
• D. The germination of seeds

Answer: (B)

Imbibition is the initial absorption of water by a dry seed or plant tissue. When a seed encounters moisture, water moves into it because the surrounding environment has a higher water potential than the dry seed. This entry of water causes the seed to swell, rehydrates its tissues, and reactivates metabolic enzymes, effectively kickstarting germination. This hydrated state is a prerequisite for the physiological changes that lead to growth, but imbibition itself is the physical uptake of water rather than the growth processes of germination. It’s not about water loss from leaves, nutrient uptake by roots, or germination itself—those occur at different stages or involve different processes.

Imbibition is the initial absorption of water by a dry seed or plant tissue. When a seed encounters moisture, water moves into it because the surrounding environment has a higher water potential than the dry seed. This entry of water causes the seed to swell, rehydrates its tissues, and reactivates metabolic enzymes, effectively kickstarting germination. This hydrated state is a prerequisite for the physiological changes that lead to growth, but imbibition itself is the physical uptake of water rather than the growth processes of germination. It’s not about water loss from leaves, nutrient uptake by roots, or germination itself—those occur at different stages or involve different processes.