List two peculiar characters of phylum Mollusca.

Explanation

### Step-by-Step Solution:

1. **Identify the Phylum**: The question asks for peculiar characters of the phylum Mollusca. This phylum is known for its diverse range of organisms, including snails, octopuses, and clams.

2. **Character 1 - Body Structure**: One peculiar character of phylum Mollusca is that their body is unsegmented. This means that unlike some other animal phyla, the body of mollusks does not have distinct segments.

3. **Character 2 - Feeding Mechanism**: Another peculiar character is that mollusks possess a unique feeding organ known as the radula. The radula is a file-like, rasping structure located in the mouth, which is used to scrape food from surfaces.

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