On the rocky sea coasts of Scotland larger and competitively superior barnacle is

Options

A. Chthamalus
B. Balanus
C. Sacculina
D. Daphnia

Answer

To solve the question regarding the larger and competitively superior barnacle found on the rocky sea coasts of Scotland, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Context**: The question specifies that we are looking for a barnacle species that is larger and competitively superior on the rocky sea coasts of Scotland.

2. **Understand Barnacle Species**: There are different species of barnacles, and they can vary in size and competitive abilities.

3. **Recognize the Larger Barnacle**: In this context, the larger and competitively superior barnacle is identified as **Balanus**.

4. **Differentiate from Smaller Barnacle**: The smaller barnacle that can also be found in the same habitat is known as **Chthamalus**.

5. **Conclude the Answer**: Therefore, the answer to the question is **Balanus**.

### Final Answer:
The larger and competitively superior barnacle on the rocky sea coasts of Scotland is **Balanus**.

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