AP BIOLOGY

Detailed explanation-1: -Plumule is the essential part of the seed embryo which further develops into the shoot of the plant. The plumule of the seed emerges out of the soil and develops young leaves and stems.

Detailed explanation-2: -Radicle is defined as the embryonic root of the plant, which develops into the future root of the plant. It is the first part of the embryo to develop into the root system of plants.

Detailed explanation-3: -The part of an embryo which gives rise to root is called radicle and the part which gives rise to shoot is called plumule.

Detailed explanation-4: -The embryo consists of two seedling leaves (cotyledons), a nascent shoot (epicotyl), and an embryonic root (radicle) at the base of the embryonic shoot (hypocotyl).