SSC MTS EXAM

Detailed explanation-1: -The key to plant growth is meristem, a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate. Meristem allows plant stems and roots to grow longer (primary growth) and wider (secondary growth).

Detailed explanation-2: -This PRIMARY growth is responsible for growth in height. Woody plants have SECONDARY growth, in that they have a special lateral meristem called the vascular cambium, that allows for growth in diameter.

Detailed explanation-3: -Tissues formed from lateral meristems, comprising most of the trunk, branches, and older roots of trees and shrubs, are known as secondary tissues and are collectively called the secondary plant body [1, 2].

Detailed explanation-4: -Secondary meristems, or lateral meristems, are responsible for secondary growth. It can increase the girth and thickness of the stem. Meristems are responsible for wound healing because they regenerate from other cells in wounded tissues.