NEET 2007 Biology question

What is true about Nereis, Scorpion, Cockroach and Silver fish?

(1)They all belong to the same phylum
(2)They all have jointed paired appendages
(3)They all possess dorsal heartCorrect
(4)None of them is aquatic

Answer: (3)

Solution

Nereis is an annelid, while scorpion, cockroach and silverfish are arthropods, so they are not in the same phylum (1). All four have an open or tubular dorsal heart / contractile dorsal vessel (in

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Question ID VK-089767