AP BIOLOGY

Detailed explanation-1: -Herbaceous plants can be easily identified because they have non-woody stems. Their above-ground growth largely or totally dies back in winter in the temperate zone, but they may have underground plant parts (roots, bulbs, etc.) that survive.

Detailed explanation-2: -Herbaceous plants typically have flexible green stems, and many die back for the winter, persisting with underground food-storage organs such as fleshy roots, rhizomes, bulbs, or corms. All vascular plants begin their lives as herbaceous seedlings.

Detailed explanation-3: -The primary root, or radicle, is the first organ to appear when a seed germinates. It grows downward into the soil, anchoring the seedling. In gymnosperms and dicotyledons (angiosperms with two seed leaves), the radicle becomes a taproot.

Detailed explanation-4: -Taproot systems feature a single, thick primary root, called the taproot, with smaller secondary roots growing out from the sides. The taproot may penetrate as many as 60 meters (almost 200 feet) below the ground surface.