AP BIOLOGY

Detailed explanation-1: -Root hairs are produced in the zone of maturation of growing plant roots (region 1 of the above figure) . The zone of maturation follows the zone of elongation (region 2) and the zone of cell division (region 1) in the root as it grows into the soil or the plant environment.

Detailed explanation-2: -Root hairs develop from the region of maturation. Certain epidermal cells from this region form fine and delicate, thread-like structures called root hairs which help in the absorption of water and minerals.

Detailed explanation-3: -Region of Maturation The zone behind the root hair known as the permanent zone produces lateral roots. It anchors the roots firmly in the soil and transports water and nutrients upwards.

Detailed explanation-4: -The Region of Maturation For example, cells in the center of the root will become specialized in transport (xylem and phloem), while the cells towards the periphery (outside) of the root will become specialized in protecting the root (epidermis). In this region of maturation is also where root hairs are formed.

Detailed explanation-5: -The region of maturation is sometimes also called the region of differentiation or root-hair zone. In this region, cells mature into the various types of primary tissues. Recall that root hairs are extensions of the epidermis that serve to increase surface area and aid in the absorption of water and soil nutrients.