AP BIOLOGY

Detailed explanation-1: -taproots. …the root from the embryonic radicle. This primary root is a taproot. In plants in which the taproot persists, smaller lateral roots (secondary roots) commonly arise from the taproot and may in turn produce even smaller lateral roots (tertiary roots).

Detailed explanation-2: -The part of the embryo that develops into a root is called the radicle. The part of the embryo that develops into a shoot is called the plumule.

Detailed explanation-3: -An embryo is composed of three parts radicle, plumule, and cotyledons. The plumule region develops onto shoot system and radical region develops into the root system.

Detailed explanation-4: -The radicle is the embryonic root of the plant, and grows downward in the soil (the shoot emerges from the plumule).

Detailed explanation-5: -The radicle is the part of the plant that develops into the primary root. It is the embryo of the root system that is supported by several regions of the plant.