Planaria posses high capacity of :

Options

A. metamorphasis
B. regeneration
C. alternation of generation
D. bioluminescence

Answer

**Step-by-Step Solution:**

1. **Understanding Planaria**: Planaria are flatworms that belong to the phylum Platyhelminthes. They are known for their simple body structure and are often studied in biology due to their remarkable regenerative abilities.

2. **Regeneration Capacity**: One of the most notable features of Planaria is their high capacity for regeneration. This means that if a Planaria is cut into pieces, each piece has the potential to regenerate and develop into a complete organism.

3. **Mechanism of Regeneration**: When Planaria are cut into fragments, specialized cells called neoblasts are activated. These cells are pluripotent stem cells that can differentiate into various cell types necessary for forming new tissues and organs.

4. **Formation of New Individuals**: After the fragmentation, the neoblasts proliferate and migrate to the wound sites, where they begin to form new tissues. Eventually, each fragment can develop into a new Planaria, demonstrating their ability to regenerate.

5. **Conclusion**: Therefore, the correct answer to the question is that Planaria possess a high capacity for regeneration.

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