AP BIOLOGY

Detailed explanation-1: -These are present at the tips of the roots and shoots and helps in the increase of the height of the plants.

Detailed explanation-2: -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-3: -Apical meristem is present at the growing tips of stems and roots and increases the length of the stem and the root.

Detailed explanation-4: -Lateral Meristems are observed in stems and roots of the plant body. Lateral meristem stimulates the increase in the girth of stem and root. It increases the lateral thickness of the plant stem and root. Hence, lateral meristem helps in increasing the girth.

Detailed explanation-5: -Apical meristem is present at the tips of growing roots and shoots. It increases the length of roots and shoots. Lateral meristem is present inside the roots and shoots in the form of a strip. It is responsible for the increase in the girth of roots and shoots.