Identify the stinging cells abundant in the tentacles of hydra.

Options

A. Ctenidia
B. Cnidoblasts
C. Ostia
D. Ganglia

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about the stinging cells in the tentacles of Hydra. First, we need to recognize that Hydra is a freshwater organism belonging to the phylum Cnidaria.

2. **Understand the Function of Tentacles**: The tentacles of Hydra are specialized structures that play a crucial role in capturing prey. They are equipped with specific cells that help in this process.

3. **Identify the Stinging Cells**: The stinging cells present in the tentacles of Hydra are known as "Nidoblast cells." These cells are responsible for the stinging mechanism.

4. **Function of Nidoblast Cells**: Nidoblast cells release toxic substances, primarily enzymes, that can inject into the prey. This venom is used to immobilize or kill the prey, making it easier for Hydra to consume it.

5. **Conclusion**: Therefore, the stinging cells abundant in the tentacles of Hydra are called Nidoblast cells.

**Final Answer**: The stinging cells abundant in the tentacles of Hydra are called Nidoblast cells.

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