NEET BIOLOGY

Detailed explanation-1: -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-2: -We call this imbibition, and sometimes the seed or fruit requires special treatment for water to get into the seed and start this process. We often use the emergence of the radicle (the embryonic root) from the seed coat as a measure of successful germination.

Detailed explanation-3: -A dormant seed will not germinate when it will be exposed to the right environmental conditions (light and water). Seed dormancy can be broken by dry storage or by a cold imbibition (stratification). Seed germination in Arabidopsis is two-step: testa rupture followed by endosperm rupture.

Detailed explanation-4: -Dormancy is a period in an organism’s life cycle when growth, development, and (in animals) physical activity are temporarily stopped. This minimizes metabolic activity and therefore helps an organism to conserve energy.