AP BIOLOGY

Detailed explanation-1: -Once they grow, they start to bear flowers, produce fruits, seeds and the cycle continues for a longer period of time. They do not die after bearing fruits but renew their parts, season after season. Along with a few shrubs, trees are all classified into perennials.

Detailed explanation-2: -Plants are classified by the number of growing seasons required to complete their life cycle. Generally, these groups are annuals, biennials, and perennials. Annuals will provide continuous blooms throughout the growing season, while biennials provide blooms during their second year of growth.

Detailed explanation-3: -Annual plants complete their life cycle in one growing season. Biennial plants are planted in one year, grow through the year, grow on and flower during the next year. Perennial plants grow strong year after year. They germinate, grow, bear fruits and flowers, and die off in the same year.

Detailed explanation-4: -perennial, any plant that persists for several years, usually with new herbaceous growth from a part that survives from growing season to growing season. Trees and shrubs, including all gymnosperms (cone-bearing plants), are perennials, as are some herbaceous (nonwoody) flowering plants and vegetative ground covers.