AP BIOLOGY

Detailed explanation-1: -The big and tall plants are trees, which possess very thick, hard, and woody stems known as the trunk. This trunk or the single main stem gives rise to several branches, which bear flowers, leaves, and fruits.

Detailed explanation-2: -A: A plant grows new tissue from an apical meristem. The apical meristem is a group of cells that retain the ability to continue divisions, forming new cells continuously as the plant grows. This PRIMARY growth is responsible for growth in height.

Detailed explanation-3: -Plants which have hard woody stems and branches close to the ground are called shrubs. For e.g. china rose, camellia etc.