Plants can be classified in several ways. In botany (the study of plants), all plants are grouped into the plants kingdom. This classification which is based mainly on structure, function and evolutionary trends, is not particularly useful to a farmer. However more useful and appropriate ways of classifying plants include grouping them into animals, biennals and perennials and for agricultural purposes.
Animal, biennials and perennials
Plants are commonly grouped into animals, biennald and perennials according to the span of their circles. This classification applies mainly to flowering plants, the group to which most crop belongs it is a practical way of classifying crop plants ad it helps a farmer to plan how to use his land to meet his goals.
Animals
These plants complete their entire life cycles and die within one growing season which maybe from a few months to a year. Many important agricultural plants are annuals. Examples include rice, wheat, maize, bean, flax, jute and sunflower.
Biennials
These plants grow and store food during the first growing season, and use it in the second growing season to produce flowers, fruits and seed before they die, examples include cabbage , radish and turnip which are harvested for food immediately after the first growing season.
Perennials
These include trees, shrubs and herbs which continue to grow from your year to year producing flowers, fruits and seeds for many years. Agriculturally important perennials include herbaceous ones such ad ginger and onion, and woody ones like rubber, oil palm, cacao mango and coconut.
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