Lateral meristem, also known as cambium, is responsible for increasing the girth or diameter of the stem or root by producing new cells that add to the secondary growth of the plant.

Apical meristem is located at the growing tips of stems and roots and is responsible for increasing the length of the stem and the root by producing new cells through cell division.

Meristematic tissues are classified as apical, lateral, and intercalary depending on where they are present in the plant.

Plant growth is limited to specific regions because those regions contain meristematic tissue, also known as dividing tissue, which is responsible for cell division and subsequent growth.

Adaptation for sedentary existence in plants leads to the development of specialized tissues for anchorage, nutrient absorption, and photosynthesis, whereas adaptation for active locomotion in animals necessitates complex organ systems for movement, sensory perception, and efficient energy utilization.