AP BIOLOGY

Detailed explanation-1: -An embryo of a seed consists of radicle, plumule and cotyledons .

Detailed explanation-2: -In a seed, the embryo consists of three main parts: the plumule, the radicle, and the hypocotyl.

Detailed explanation-3: -Radicle is the parts of the plant embryo, which is found inside the seed. During the germination of the seed, the radicle is developed first through the micropyle of the seed.

Detailed explanation-4: -The mature seed is comprised of three parts: an embryonic root (radicle) and shoot, food reserve tissues or organs (cotyledons, endosperm, or megagametophyte), and a protective structure, the seed coat (testa).

Detailed explanation-5: -The radicle is the embryonic root of the plant, and grows downward in the soil (the shoot emerges from the plumule). Above the radicle is the embryonic stem or hypocotyl, supporting the cotyledon(s).