Cnidoblasts are not used for :-

Options

A. Anchorage
B. Locomotion and defence
C. Capture of prey
D. Reproduction

Answer

**Step-by-Step Solution:**

1. **Understanding Cnidoblasts**: Cnidoblasts, also known as nematoblasts, are specialized cells found in cnidarians (like jellyfish, corals, and sea anemones). They contain structures called nematocysts.

2. **Function of Nematocysts**: Nematocysts are stinging organelles that can be used for various purposes. They consist of a capsule, a shaft, and a thread tube, which can be discharged to capture prey or for defense.

3. **Identifying Uses**: The main functions of cnidoblasts include:
- **Locomotion**: Some cnidarians use the stinging cells to help in movement.
- **Defense**: They provide protection against predators by stinging.
- **Capture of Prey**: They are primarily used to immobilize or capture prey.

4. **Reproduction**: Cnidoblasts are not involved in the reproductive process of cnidarians. Reproduction in these organisms typically occurs through other means, such as budding or sexual reproduction involving gametes.

5. **Conclusion**: Based on the functions of cnidoblasts, they are not used for reproduction. Therefore, the correct answer to the question is that cnidoblasts are not used for reproduction.

**Final Answer**: Cnidoblasts are not used for reproduction.

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