NEET BIOLOGY

Detailed explanation-1: -During the beginning stage of germination, the seeds take up water rapidly and this results in swelling and softening of the seed coat at an optimum temperature. This stage is referred to as Imbibition. It starts the growth process by activation of enzymes.

Detailed explanation-2: -The imbibition of water by seeds before germination can be divided into three phases: rapid uptake of water (phase I), phase of enhanced water uptake (phase II), and uptake of water along with the initiation of growth (phase III).

Detailed explanation-3: -The uptake of water by dry seed is called imbibition (imbibition means to drink: seeds imbibe water, you do not imbibe seeds). As seeds imbibe water, they expand and enzymes and food supplies become hydrated.

Detailed explanation-4: -Seeds begin to absorb water at the initial stage of germination, a process known as “imbibition.” The seed covering softens as it absorbs water, and the seed then begins to metabolise as the water stimulates the production of gibberellin.

Detailed explanation-5: -1) Imbibition: water fills the seed. 2) The water activates enzymes that begin the plant’s growth. 3) The seed grows a root to access water underground. 4) The seed grows shoots that grow towards the sun. 5) The shoots grow leaves and begin photmorphogenesis.