Reparative regeneration involves

Options

A. Replacement of lost part
B. Growth of whole organism from a fragment
C. Healing of injury
D. Both A and B

Answer

**Step-by-Step Solution:**

1. **Understanding Reparative Regeneration**: Reparative regeneration refers to the process by which damaged tissues or cells in multicellular organisms are repaired. This process is crucial for healing injuries and restoring normal function after damage.

2. **Analyzing the Options**:
- **Option A: Replacement of Lost Part**: This option suggests that reparative regeneration involves completely replacing lost body parts. However, this is not accurate as reparative regeneration does not fully replace lost organs or limbs.
- **Option B: Growth of Whole Organism from a Fragment**: This option describes a process known as fragmentation, which is different from reparative regeneration. In fragmentation, a new organism grows from a fragment of the parent organism, which is not the focus of reparative regeneration.
- **Option C: Healing of Injury**: This option correctly describes the primary function of reparative regeneration. When an injury occurs, the body repairs the damaged cells and tissues, which aligns with the definition of reparative regeneration.
- **Option D: Both A and B**: Since both options A and B have been identified as incorrect, this option is also incorrect.

3. **Conclusion**: Based on the analysis of the options, the correct answer is **Option C: Healing of Injury**. This accurately reflects the process involved in reparative regeneration.