Types of Angiosperms on the basis of life span:-

Annuals:- Such plants which complete their life cycle within one season. e.g. mustard, rice, wheat.

Biennials:- Such plants which complete their life cycle in two growing seasons. e.g. carrot, radish turnip.

Perennials:- Such plants which grow for a number of seasons or for many years, are called perennials. They may produce flowers and fruits every year (i.e. polycarpic), e.g. apple, mango, lemon some produce flowers and fruits once in life (i.e. monocarpic), e.g. Agave Americana, Bambusa tulda.

Types of Angiosperms on the basis of form:-

Herbs:- These are plants which are non-woody and aerial parts are not persistent. e.g. gram, wheat.

Shrubs:- These are woody plants which and are branched near the ground, stem is not much developed into clear trunk, e.g. rose, Chine-rose, Croton, Duranta etc.

Trees:- These are woody plants, which are branched at some height and thus have much developed trunk.

Culms:- Hollow stems with prominent nodes and internodes. e.g., Bambusa.

The main root, primary root or tap root is formed from the radicle. The lateral branches of main root are called Secondary root which are further branched to form tertiary roots.

Roots are absent in some angiosperms, e.g. Utricularia.