Mesogloea of Hydra contains

Options

A. Nerve cells
B. Phagocytic cells
C. Interstitial cells
D. None of the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Mesogloea**: The mesogloea is a gelatinous substance found between the two epithelial layers (ectoderm and endoderm) in cnidarians like Hydra. It serves as a supportive structure.

2. **Composition of Mesogloea**: The mesogloea primarily contains a matrix of proteins and other substances, but it is important to note that it does not contain specialized cells like nerve cells or phagocytic cells.

3. **Identifying Cell Types**: In Hydra, the nerve cells are primarily located in the ectoderm and are not found in the mesogloea. Similarly, phagocytic cells, which are involved in capturing and digesting prey, are also not located in the mesogloea.

4. **Interstitial Cells**: Interstitial cells in Hydra can differentiate into various cell types, including nerve cells and nematocysts (stinging cells). However, these cells are not found within the mesogloea itself.

5. **Conclusion**: Since the mesogloea does not contain nerve cells, phagocytic cells, or interstitial cells, the correct answer to the question is that the mesogloea of Hydra does not contain any of the listed options. Therefore, the answer is "none of the above."

**Final Answer**: The mesogloea of Hydra contains none of the above options.

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