A file like rasping organ for feeding called Radula, present in the phylum

Options

A. hemichordata
B. mollusca
C. echinodermata
D. arthropoda

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about a specific organ called "radula," which is described as a file-like rasping organ used for feeding.

2. **Identifying the Phylum**: We need to determine which phylum contains the radula. The options provided are:
- Hemichordata
- Mollusca
- Echinodermata
- Arthropoda

3. **Analyzing the Options**:
- **Hemichordata**: This phylum includes marine organisms like acorn worms, which do not possess a radula.
- **Mollusca**: This phylum includes a wide variety of animals such as snails, clams, and octopuses. Mollusks are known for having a radula, which is a unique feeding organ that helps them scrape food.
- **Echinodermata**: This phylum includes starfish and sea urchins, which do not have a radula.
- **Arthropoda**: This phylum includes insects, arachnids, and crustaceans, which also do not possess a radula.

4. **Conclusion**: Based on the analysis, the radula is a unique feature of the phylum **Mollusca**. Therefore, the correct answer is **Mollusca**.

**Final Answer**: The file-like rasping organ for feeding called radula is present in the phylum **Mollusca**.

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