NEET BIOLOGY

Detailed explanation-1: -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. Primary growth occurs in small areas called apical meristems.

Detailed explanation-2: -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.

Detailed explanation-3: -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-4: -Apical meristem is the region at the tip of the plant body. It helps in the increase in the height of the plant. The girth of the stem and roots increases due to lateral meristem. It is present on both sides of stem and roots.

Detailed explanation-5: -Primary growth is vertical growth of stem and roots. Growth patterns extend the basic structures of a plant both above and below ground. The length and mass of root systems depend on the types of soil, the abundance of water, and the size of the plant growing above ground.