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Excretory organs of an earthworm are...

Excretory organs of an earthworm are

A

nephridia

B

flame cells

C

Malpighian tubules

D

green glands

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Organism**: The question asks about the excretory organs of an earthworm. Earthworms belong to the phylum Annelida. 2. **Classify the Earthworm**: Earthworms are classified under the class Oligochaeta within the phylum Annelida. 3. **Understand Excretion in Earthworms**: The primary function of excretion in earthworms is carried out by specialized structures known as nephridia. 4. **Analyze the Options**: - **Nephridia**: This is the correct option as it is the excretory organ in earthworms. - **Flame Cells**: These are found in flatworms (phylum Platyhelminthes) and are not related to earthworms. - **Malpighian Tubules**: These are excretory structures found in insects (phylum Arthropoda), thus not applicable to earthworms. - **Green Glands**: These are also excretory organs found in arthropods, making this option incorrect for earthworms. 5. **Conclusion**: The excretory organs of earthworms are nephridia. **Final Answer**: The excretory organs of an earthworm are nephridia. ---
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