Which one is not a case of epimorphosis ?

Options

A. Replacement of limb in Salamander
B. Formation of sperms from small clump of cells
C. Replacement of severed arm of Star Fish
D. Regeneration of tail by lizard

Answer

**Step-by-Step Solution:**

1. **Understanding Epimorphosis**:
- Epimorphosis is a type of regeneration where an organism can regenerate lost body parts. This process involves the reorganization of cells to form a new structure that is similar to the original.

2. **Analyzing the Options**:
- **Option A: Replacement of limb in Salamander**: Salamanders are known for their ability to regenerate limbs, which is a clear case of epimorphosis.
- **Option B: Formation of sperm from small clumps of cells**: This process does not involve the regeneration of a lost body part. Instead, it is a developmental process, making this option a candidate for being the correct answer.
- **Option C: Replacement of severed arm of starfish**: Starfish can regenerate lost arms, which is also a case of epimorphosis.
- **Option D: Regeneration of tail by lizard**: Lizards are known for their ability to regenerate their tails, which is again a case of epimorphosis.

3. **Identifying the Correct Answer**:
- After analyzing all options, it is clear that **Option B (Formation of sperm from small clumps of cells)** is not a case of epimorphosis, as it does not involve the regeneration of a lost body part.

4. **Conclusion**:
- The answer to the question "Which one is not a case of epimorphosis?" is **Option B**.

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