Stinging capsules (nematocysts) are found in

Options

A. Scypha and brian coral
B. Cliona and Chalina
C. Sea pen and sea fan
D. Grantia and Velella

Explanation

**Step-by-Step Solution:**

1. **Understanding Nematocysts**: Nematocysts are specialized stinging capsules that serve as a defense mechanism and are used for capturing prey. They are a key feature of certain animals.

2. **Identifying the Phylum**: Nematocysts are primarily found in organisms belonging to the phylum Coelenterata, which is also known as Cnidaria. This phylum includes various marine animals.

3. **Examples of Coelenterates**: Common examples of coelenterates include jellyfish, sea anemones, and corals. Specific examples mentioned in the video are the sea fan and the sea pen.

4. **Function of Nematocysts**: These stinging capsules can be used both offensively (to capture prey) and defensively (to deter predators). This dual function is crucial for the survival of these organisms.

5. **Conclusion**: Based on the above information, the answer to the question is that stinging capsules (nematocysts) are found in organisms such as the sea fan and sea pen, which are part of the phylum Coelenterata.

**Final Answer**: Stinging capsules (nematocysts) are found in the phylum Coelenterata, specifically in organisms like the sea fan and sea pen.

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