Sensory cells of Hydra possess

Options

A. Flagellum
B. Hair-like processes
C. Cilia
D. Pseudopodia.

Answer

To answer the question "Sensory cells of Hydra possess," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Hydra's Structure**:
- Hydra is a diploblastic organism, meaning it has two primary tissue layers: the outer epidermis (derived from ectoderm) and the inner gastrodermis (derived from endoderm). Between these layers is a non-cellular layer called mesoglia.

2. **Identifying Cell Types**:
- The epidermis contains various types of cells, including epitheliomuscular cells, nidocytes (or nidoblasts), germ cells, interstitial cells, and sensory cells. The gastrodermis has nutritive muscular cells and gland cells.

3. **Focusing on Sensory Cells**:
- Sensory cells in Hydra are specifically designed to detect environmental stimuli. They can be found in either the epidermis or gastrodermis.

4. **Characteristics of Sensory Cells**:
- The key feature of sensory cells in Hydra is that they possess cilia. These cilia are hair-like structures that help in sensory functions.

5. **Conclusion**:
- Based on the information gathered, we conclude that the sensory cells of Hydra possess cilia.

### Final Answer:
The sensory cells of Hydra possess **cilia**.

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