DENDROLOGY

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 root is the first to emerge from the seed. As it grows, it anchors the plant to the ground, and begins absorbing water through the root. After the root absorbs water, the shoot begins to emerge from the seed.

Detailed explanation-3: -germination, the sprouting of a seed, spore, or other reproductive body, usually after a period of dormancy. The absorption of water, the passage of time, chilling, warming, oxygen availability, and light exposure may all operate in initiating the process.

Detailed explanation-4: -The germination process begins when water is absorbed (imbibed) by the seed. This initiates several biochemical events necessary for seedling development. For example, enzymes secreted from the aleurone layer, break down starch in the endosperm converting it to simple sugars which nourish the embryo.