Question

The Active division takes place in the cells of
A) Xylem
B) Phloem
C) Cambium
D) Sclerenchyma

Answer 1

Active division is a potential cell division where a cell is divided into multiple new cells that results in the growth of the plant in the meristematic tissue. Meristematic tissues found in the tips of the stems and roots have the ability to divide to form new cells.

Complete answer:
Let us analyze the given options:
Option A: Xylem is one of the two types of transport tissue in vascular plants the other being the phloem. Xylem cells are made up of permanent tissue and are incapable of dividing. They form a continuous system of water-conducting channels transporting water and mineral nutrients reaching all parts of the plants. Hence this option is incorrect.

Option B: The vascular tissue in charge of the transport and distribution of organic nutrients called the phloem is made up of the same tissue as the xylem they are also not capable of dividing. It is usually formed of three cell types: sieve elements, parenchyma, and sclerenchyma. Hence this option is incorrect.

Option C: A cambium is a meristematic tissue that has the immense potential for the division to help in the growth of plants. Found in the area between the xylem and phloem, it is composed of lateral meristematic cells. There are three different types of cambium; cork cambium, unifacial cambium and vascular cambium. Hence this option is correct.

Option D: Sclerenchyma supports the tissue formed by the dead cells and have heavily thickened secondary walls containing lignin. They are quite rigid and gives structural strength to the plant, like the bark or mature stems. Hence this option is incorrect.

Thus the correct option is (C). Cambium is the part in the cell where active division takes place.

Note: Cambium is formed from alike cells that have maintained their embryonic capabilities to grow and differentiate. They can also form within the callus tissues which are masses that grow over injury or wound and lead to healing. They divide to form secondary xylem and phloem cells towards the outside.