"What animal has pharyngeal gill slits, notochord, dorsal hollow nerve chord, and post-anal tail?"Group of answer choicesAmphioxusEarthwormSea StarSponge
Question
"What animal has pharyngeal gill slits, notochord, dorsal hollow nerve chord, and post-anal tail?"Group of answer choicesAmphioxusEarthwormSea StarSponge
Solution
The animal that has pharyngeal gill slits, notochord, dorsal hollow nerve chord, and post-anal tail is the Amphioxus. These are all characteristics of chordates, and the Amphioxus, also known as lancelet, is a primitive chordate. Earthworms are annelids, sea stars are echinoderms, and sponges are poriferans, none of which have all these features.
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