NEET BIOLOGY

Detailed explanation-1: -Growth in plants occurs as the stems and roots lengthen. Some plants, especially those that are woody, also increase in thickness during their life span. The increase in length of the shoot and the root is referred to as primary growth. It is the result of cell division in the shoot apical meristem.

Detailed explanation-2: -Primary growth results in the increase in length of the primary plant body. Primary growth occurs at the apical meristem (a meristem located at the tip of a stem). A meristem is a region of undifferentiated cells from which new cells arise through cellular division.

Detailed explanation-3: -Answer: the increase in length of the the shoot and the root is referred to as primary growth, and is the result of cell division in the shoot apical meristem.

Detailed explanation-4: -In botany, secondary growth is the growth that results from cell division in the cambia or lateral meristems and that causes the stems and roots to thicken, while primary growth is growth that occurs as a result of cell division at the tips of stems and roots, causing them to elongate, and gives rise to primary tissue.

Detailed explanation-5: -Tree growth occurs in two ways. Growth from the root and shoot tips resulting in increases in height and length is called primary growth. Growth that increases the thickness of stems and branches is called secondary growth.