Question

Interfascicular cambium and cork cambium are formed due to
A. Cell division
B. Cell differentiation
C. Cell dedifferentiation
D. Redifferentiation

Answer 1

Hint: A plant's cambium is a tissue layer that supplies partially undifferentiated cells for growth. It can be found between the xylem and the phloem. It produces secondary tissues by forming parallel rows of cells. The cambium’s effective life span varies widely between species and even within the same plant. The cambium of the main stem of a perennial woody plant lives from the time it is formed until the plant dies.

Complete answer :
Option A Cell division : A parent cell divides into two or more daughter cells in the process of cell division. After mitosis, plant cells divide in half by forming a new cell wall (cell plate) between daughter nuclei. Both interfascicular cambium and cork cambium are not formed by cell division. Hence option A is not correct.
Option B Cell differentiation : Cell differentiation is the process through which cells from the same source generate cell groups with different morphological and functional features over time. As a result, cells are geographically distinct, and the same cells differ in time from one another. Interfascicular cambium and cork cambium are not formed by cell differentiation. Hence option B is not correct.
Option C Cell dedifferentiation : Within the same lineage, dedifferentiation is a temporary process in which cells become less specialised and return to an earlier cell state. Under some circumstances, a differentiated cell can regain its ability to divide. Dedifferentiation is the term for this phenomenon. Cell dedifferentiation results in the formation of interfascicular cambium and cork cambium. Hence, option C is the correct answer.
Option D Redifferentiation : A mature plant cell loses its ability to divide after being dedifferentiated. Redifferentiation is the term for this phenomenon. Both the interfascicular cambium and cork cambium are not formed due to the process of redifferentiation. Hence option D is not correct.

Hence option C. Cell dedifferentiation is the correct answer.

Note :
Many plants, particularly dicots like buttercups and oak trees, gymnosperms like pine trees, and vascular plants, have vascular cambium as their principal growth tissue in their stems and roots. Secondary xylem is produced internally toward the pith, whereas secondary phloem is produced outwardly towards the bark.