Which of the following is a mollusc :-

Options

A. Sea-horse
B. Sea-mouse
C. Sea-hare
D. Sea-cow

Answer

To determine which of the given options is a mollusk, we can follow these steps:

### Step 1: Identify the Options
First, we need to look at the options provided in the question. The options are:
1. Sea Horse
2. Sea Mouse
3. Sea Hare
4. Sea Cow

### Step 2: Analyze Each Option
Now, let's analyze each option to see if it belongs to the phylum Mollusca.

1. **Sea Horse**:
- The sea horse is a type of fish belonging to the family Syngnathidae. Therefore, this option is not a mollusk.

2. **Sea Mouse**:
- The sea mouse is a type of marine polychaete worm, which belongs to the phylum Annelida. Thus, this option is also not a mollusk.

3. **Sea Hare**:
- The sea hare is a type of marine gastropod mollusk. This option is indeed a mollusk.

4. **Sea Cow**:
- The sea cow, or manatee, is a marine mammal belonging to the order Sirenia. Therefore, this option is not a mollusk.

### Step 3: Conclusion
After analyzing all the options, we conclude that the correct answer is **Sea Hare**, as it is the only option that belongs to the phylum Mollusca.

### Final Answer
The correct answer is **Sea Hare**.

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