Totipotent cells in hydra are

Options

A. archaeocytes
B. interstitial cells
C. spematogonia
D. oogonia

Answer

**Step-by-Step Solution:**

1. **Understanding Totipotency**:
- Totipotent cells are defined as cells that have the ability to differentiate into any type of cell and can give rise to a complete organism. They can also replace damaged or lost cells.

2. **Identifying the Organism**:
- The question specifically asks about totipotent cells in Hydra, which is a member of the phylum Cnidaria.

3. **Reviewing Cell Types**:
- We need to evaluate the types of cells present in Hydra and determine which ones are totipotent.
- The options provided include Archeocytes, Interstitial cells, Spermatogonia, and Oogonia.

4. **Analyzing Each Option**:
- **Archeocytes**: These are totipotent cells found in sponges (phylum Porifera), not in Hydra.
- **Interstitial Cells**: These are present in Hydra and are known to be totipotent. They can replace damaged cells and contribute to regeneration.
- **Spermatogonia**: These are germ cells involved in the formation of sperm but are not totipotent.
- **Oogonia**: These are germ cells involved in the formation of eggs in females and are also not totipotent.

5. **Conclusion**:
- Based on the analysis, the correct answer is that the totipotent cells in Hydra are **Interstitial Cells**.

**Final Answer**: Interstitial cells are the totipotent cells in Hydra.

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