NEET BIOLOGY

Detailed explanation-1: -Oxygen: It is an important and essential source of energy required for seed growth. It is required by the germinating seed for metabolism and is used as a part of aerobic respiration until it manages to grow green leaves of its own.

Detailed explanation-2: -Seeds need oxygen so that they can produce energy for germination and growth. The embryo gets energy by breaking down its food stores. Like all organisms, this is done through a process known as aerobic respiration.

Detailed explanation-3: -All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.

Detailed explanation-4: -But once seeds have germinated and broken through the surface of the soil or growing media as seedlings, they all need sunlight to grow. Table 1 shows optimal soil temperatures for germination for common vegetable crops.

Detailed explanation-5: -Seeds have stored energy in the form of starch which feeds them until the leaves can begin the process of photosynthesis. In some ways they can be compared to batteries, holding energy until it is needed. Seed size and planting depth impact the process of germination because they affect the seeds energy stores.