What is true about Nereis, scorpion, cockroach and silverfish?
A
All of them possess dorsal hearts.
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B
None of the them is aquatic.
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C
They belong to the same phylum.
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D
All of them have jointed paired appendages.
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Solution
The correct option is A All of them possess dorsal hearts. Nereis belongs to the phylum Annelida. The scorpion, cockroach and silverfish are arthropods . They are all non-chordates and possess dorsal hearts.