The germ develops and grows into stems and leaves, and the radicle develops and grows into roots.

The germ it develops into leaves and stems after breaking through the skin of the seed. It is located at the tip of the embryonic axis and develops into leaves and stems after breaking through the skin of the seed. In the case of a live seedling (a plant that grows from seed germination), the germ is the first bud of the plant body, which is formed during embryogenesis. When the seed sprouts, the germinal bud becomes the active bud and forms the first branch of the live seedling.

Expanded Information

The germ is the first leaf bud of a solid seedling, which is formed during embryogenesis. At a certain stage of embryo formation, the opposite poles of the cell clusters to form the root tip and stem tip of the meristematic zone, the latter is the growth cone of the germinal bud followed by the growth cone side of the local cell division to form a protuberance, that is, the leaf primordium.

The number of leaf primordia formed at a time and their arrangement is the same as that of the plant's leaf sequence: alternate leaf sequences produce one at a time, opposite leaf sequences produce a pair at a time, and whorled leaf sequences produce several at a time. As the leaf primordia appear and grow, the growth cone becomes progressively smaller. After reaching its minimum size, the growth cone undergoes a number of cell divisions to regain its original size before producing the next leaf primordium or batch of leaf primordia.

The period between the formation of the first and second leaf primordia is called the interphase, the length of which varies from plant to plant and can range from a few hours to a few days. Stage of growth and environmental conditions also affect the wetting period, such as late fall and early winter, active buds to dormant buds, the interval will be longer and longer or even stop producing new protoplasts; back of the shady branches on the interval is longer than the sunny, and so on.

When the seed matures, the germ has a certain number of leaf primordia and the internal organization of the differentiation of young leaves. Its number and degree of differentiation varies from plant to plant, such as wheat has 2-3, corn has 6. The early appearing young leaves begin to appear internally as a protoplast and are connected to the protoplast of the shoot axis. The formation of the germ is followed by the dormancy of the seed into a dormant state.