Which of the following is an example of Phylum Arthropoda?

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Accepted Answer

Step 1: Recognize arthropod characteristics

- Phylum Arthropoda: organisms with a segmented body, jointed appendages, and an exoskeleton (chitin).

Step 2: Identify each given organism

- (1) Nereis — a polychaete annelid (Phylum Annelida), not an arthropod.
- (2) Butterfly — an insect; insects belong to Phylum Arthropoda.
- (3) Hirudinaria — a leech, also an annelid (Phylum Annelida).
- (4) Pila — a freshwater snail (Phylum Mollusca).

Step 3: Conclude

Only option $(2)$, the butterfly, is an arthropod (an insect). Therefore the correct choice is option b.

FINAL_ANSWER: b

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Answer

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