During regeneration, following takes place
(a) cell division (b) cell movement
(c) dedifferentiation and
(d) tissue differentiation
The correct sequence is

Options

A. a, b, c, d
B. c, a, b, d
C. b, a, c, d
D. a, c, b, d

Answer

To determine the correct sequence of events that occur during regeneration, we can break down the process into distinct steps:

1. **Dedifferentiation**: This is the first step in the regeneration process. In this stage, specialized cells revert to a more primitive, unspecialized state. This allows them to regain the ability to divide and form new cells.

2. **Cell Division**: After dedifferentiation, the next step is cell division. The dedifferentiated cells begin to proliferate, creating more cells that can contribute to the regeneration of the lost part.

3. **Cell Movement**: Following cell division, the newly formed cells may need to migrate to the site of injury or loss. This movement is crucial for the cells to reach the area where regeneration is needed.

4. **Tissue Differentiation**: Finally, the last step is tissue differentiation. In this phase, the cells that have moved to the site of regeneration begin to specialize again, forming the specific types of tissues that are required to restore the lost part.

Putting these steps together, the correct sequence during regeneration is:
- (c) Dedifferentiation
- (a) Cell Division
- (b) Cell Movement
- (d) Tissue Differentiation

Thus, the correct sequence is **C, A, B, D**.