CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -Meristem allows plant stems and roots to grow longer (primary growth) and wider (secondary growth).

Detailed explanation-2: -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. Secondary growth is an increase in thickness or girth of the plant body due to activity of lateral meristems.

Detailed explanation-3: -Primary growth is a result of rapidly-dividing cells in the apical meristems at the shoot tip and root tip. Subsequent cell elongation also contributes to primary growth. The growth of shoots and roots during primary growth enables plants to continuously seek water (roots) or sunlight (shoots).

Detailed explanation-4: -Primary growth is characterized by the lengthening of roots and shoots and by the proliferation of new roots and shoots through branching. Some plants also experience secondary growth, by which they increase in thickness.

Detailed explanation-5: -Conclusion. Plants grow through a combination of cell division and cell growth. Cell division increases the number of cells through cell mitosis, and cell growth increases the cell size. The growth phases are divided into 3 phases: The meristematic phase, elongation phase, and maturation phase.