Question

In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order

• A. Root cap, cell division, cell maturation, cell enlargement
• B. Cell division, cell enlargement, cell maturation, root cap
• C. Cell division,cell maturation, cell enlargement, root cap
• D. Root cap, cell division, cell enlargement, cell maturation

Answer 1

Answer: (D)

Root cap, cell division, cell enlargement, cell maturation

Answer 2

The root tip is divided into four distinct zones, each characterized by primary meristematic tissues serving unique functions. The first zone is the root cap, consisting of parenchyma cells at the tip. The second zone is the zone of cell division, housing the apical meristem where cell division occurs approximately every 12-36 hours. In the third zone, known as the zone of elongation or enlargement, cells increase in length. Finally, in the fourth zone, called the zone of maturation, cells differentiate into specific cell types like epidermal cells and cortex cells. So, the accurate sequence is 'Root cap, cell division, cell enlargement, cell maturation.'