During seed germination, the part of the embryo which grows into root is

The correct answer is A, Radicle. The radicle is the embryonic root, and it is the first part to come out of a germinating seed, growing downward to form the primary root. A seed contains an embryo with three main parts: the radicle, which forms the root; the plumule, which forms the shoot; and one or two cotyledons, the seed leaves that store or absorb food. When a seed takes in water, its coat softens, enzymes become active, and the radicle breaks out first so that the young plant can anchor itself and absorb water. In a gram or bean seed the two cotyledons are clearly visible when the seed is split. Option B is wrong because the plumule grows upward and develops into the shoot, stem and leaves. Option C is wrong because cotyledons supply stored food to the growing seedling and do not become the root. Option D is wrong because the epicotyl is the part of the embryonic axis above the cotyledons, and it forms the stem. Exam tip: radicle = root, plumule = shoot, cotyledon = seed leaf.