A wood-boring mollusc is

Options

A. Patella
B. Teredo
C. Limax
D. Chiton

Answer

To solve the question "A wood-boring mollusc is:", we will analyze the options provided and identify the correct answer step by step.

### Step 1: Understand the Question
The question asks for a specific type of mollusc that is known for boring into wood. We need to identify which of the given options fits this description.

### Step 2: Analyze the Options
The options provided are:
- A) Patella
- B) Teredo
- C) Limex
- D) Chiton

### Step 3: Identify Characteristics of Each Option
1. **Patella**: This is commonly known as a limpet, which is not a wood-boring mollusc.
2. **Teredo**: This is known as a shipworm, which is a type of wood-boring mollusc that bores into submerged wood.
3. **Limex**: This is not a commonly recognized term in relation to molluscs and does not refer to a wood-boring species.
4. **Chiton**: This is a type of mollusc with a shell made of eight overlapping plates, and it does not bore into wood.

### Step 4: Confirm the Correct Answer
From the analysis, the only option that is known to bore into wood is **Teredo**. Shipworms (Teredo) are known for their ability to burrow into wood that is submerged in water.

### Conclusion
The correct answer to the question "A wood-boring mollusc is" is **B) Teredo**.

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