Which of the following is an incorrect statement ?

Options

A. Spiders are carnivores in the phylum Arthropoda
B. Clams are filter feeders in the phylum Mollusca
C. Earthworms are scavengers in the phylum Arthropoda
D. Squids are predators in the phylum Mollusca

Explanation

To determine which of the statements is incorrect, we will evaluate each option one by one:

1. **Statement A**: "Spiders are carnivores in phylum Arthropoda."
- **Evaluation**: This statement is true. Spiders are indeed carnivorous and belong to the phylum Arthropoda. They are classified under the class Arachnida, and they catch their prey using webs.

2. **Statement B**: "Clams are filter feeders in the phylum Mollusca."
- **Evaluation**: This statement is also true. Clams are filter feeders, meaning they filter water to extract food particles, and they belong to the phylum Mollusca.

3. **Statement C**: "Earthworms are scavengers in the phylum Arthropoda."
- **Evaluation**: This statement is false. Earthworms are not part of the phylum Arthropoda; they belong to the phylum Annelida. While they do feed on decaying organic matter, calling them scavengers is misleading in this context because they are classified differently.

4. **Statement D**: "Squids are predators in the phylum Mollusca."
- **Evaluation**: This statement is true. Squids are indeed predators and belong to the phylum Mollusca, feeding on various marine organisms.

**Conclusion**: The incorrect statement is **C**: "Earthworms are scavengers in the phylum Arthropoda."