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The phylum name Annelida is based on -...

The phylum name Annelida is based on -

A

Nephridia

B

Metameres / segments

C

Parapodia

D

Antenna

Text Solution

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Phylum Annelida**: The phylum Annelida includes segmented worms, which are characterized by their body structure. 2. **Identifying Key Features**: Annelids have a body that is divided into multiple segments, also known as metamers. Each segment is a repeated unit that contributes to the overall structure of the organism. 3. **Etymology of the Name**: The name "Annelida" is derived from the Latin word "annulus," which means "little ring." This reflects the segmented nature of these organisms, where each segment can be thought of as a small ring. 4. **Conclusion**: Therefore, the phylum Annelida is named based on its characteristic feature of having a segmented body, which can be described as being made up of small rings or segments. ### Final Answer: The phylum name Annelida is based on its characteristic of having a segmented body, derived from the Latin word "annulus," meaning small ring. ---
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