Why are there perennials and non perennials?

Answer 1

Non-perennials (which basically are either annuals or the rare biennial) are plants that grow for one warm season, then die (or in the case of biennials, two warm seasons). Many vegetables and cheap colorful flowers from the nursery fall into these categories.

Perennials are more long-lived plants, which you don't have to replace every year. Trees, shrubs, and some herbaceous plants such as mint, alstroemeria and tulips fall in this category.

Answer 2

Perennials are plants that live for more than two years, regrowing each spring from the same root system. Non-perennials are plants that complete their life cycle within one growing season. This difference in life span is due to variations in genetic programming and environmental adaptations among different plant species.

Answer 3

Both annual and perennial plants produce seeds. Both may have flowers.

Perennial plants come back the next spring. Annuals you have to buy again.

Answer 4

Both have fundamental plant parts as root, stem and leaves. Both flowers and produce fruits and seeds. Both have many pollinators etc etc.