Which of the statements regarding coelenterates is/are wrong
I. Cnidocytes are present on the tentacles and on the body
II. Diploblastic with cellular level of organisation
III. Polyp forms are free living
IV. Exhibit metagenesis
V. Polyps produce medusae sexually and medusae form polyps asexually.

Options

A. II and IV only
B. III and V only
C. I, II and III only
D. II, III and V only.

Answer

To determine which statements regarding coelenterates (or cnidarians) are wrong, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement I: Cnidocytes are present on the tentacles and on the body.**
- Cnidocytes are indeed characteristic cells of cnidarians, found primarily on their tentacles and body. This statement is **correct**.

2. **Statement II: Diploblastic with cellular level of organization.**
- Cnidarians are diploblastic, meaning they have two germ layers (ectoderm and endoderm). However, they possess a **tissue level of organization**, not a cellular level. Therefore, this statement is **incorrect**.

3. **Statement III: Polyp forms are free living.**
- Polyp forms of cnidarians are generally **sessile** (attached to a substrate) and not free-living. This statement is **incorrect**.

4. **Statement IV: Exhibit metagenesis.**
- Some cnidarians exhibit metagenesis, which is the alternation between polyp and medusa forms in their life cycle. This statement is **correct**.

5. **Statement V: Polyps produce medusae sexually and medusae form polyps asexually.**
- This statement is reversed. Polyps reproduce asexually to produce medusae, while medusae reproduce sexually to form polyps. Therefore, this statement is **incorrect**.

### Summary of Findings:
- **Incorrect Statements**: II, III, and V.
- **Correct Statements**: I and IV.

### Final Answer:
The wrong statements regarding coelenterates are II, III, and V.

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