Question

what character make echinoderm are the ancesstor of chordate​

Answer 1

Chordates are coelomate deuterostomes, and probably share a common ancestor with echinoderms. Three important characteristics unite the Phylum Chordata. At some point in their life cycle, (primitive chordate embryos) all chordates have a notochord, a dorsal hollow nerve cord, and pharyngeal gill slits.

So, the correct option is, 'embryos of some echinoderms are similar to primitive chordate embryos'.

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Answer 2

Explanation:-

*chordates are coelomate Deuterostomes , and probably share A common Ancestor with echinoderms

*Three important characteristics unite the phylum chordata.

*At some point in their life cycle, (primitive chordate embryos)

*All chordates have a notochord , a dorsal hallow nerve cord and any pharyngeal gill slits.

Answer:-

so the correct ans is 'embryos of some echinoderms are similar to primitive chordate embryos'.

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