Planaria possesses high capacity of
(a) metamorphosis
(b) regeneration
(c) alternation of generation
(d) bioluminescence

Options

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

Answer

To solve the question regarding the capabilities of Planaria, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Planaria**: Begin by identifying what Planaria is. Planaria are flatworms belonging to the class Turbellaria, and they are known for their unique biological characteristics.

2. **Analyzing the Options**:
- **(a) Metamorphosis**: This refers to the process of transformation from an immature form to an adult form in two or more distinct stages. Planaria do not exhibit a typical metamorphosis.
- **(b) Regeneration**: Planaria are well-known for their remarkable ability to regenerate lost body parts. This process allows them to regrow entire sections of their body from fragments.
- **(c) Alternation of Generation**: This is a reproductive cycle that involves alternating between sexual and asexual reproduction. Planaria do not primarily reproduce this way.
- **(d) Bioluminescence**: This refers to the ability of organisms to produce light. Planaria do not possess this capability.

3. **Identifying the Correct Answer**: Based on the analysis, the most accurate option that describes the high capacity of Planaria is (b) regeneration. They can regenerate complete bodies from small pieces, demonstrating a high degree of regenerative ability.

4. **Conclusion**: Therefore, the correct answer to the question is (b) regeneration.

### Final Answer:
(b) regeneration