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mixas84 [53]
3 years ago
15

Lesson 5 Invertebrate evolution and diversity which of the following is a radially symmetrical deuterostome invertebrate most cl

osely related to chordates
Biology
1 answer:
9966 [12]3 years ago
7 0

Answer:

The radially symmetrical deuterostome invertebrate most closely related to chordates is the echinoderm.

Explanation:

Options for this question are:

  • <em>Annelid.</em>
  • <em>Echinoderm.</em>
  • <em>Arthropod.</em>
  • <em>Mollusk.</em>

Echinoderms, like the starfish, are a phylum of organisms derived from deusterotomates, in whose embryonic development the anus is formed first, and  characterized by their pentaradial symmetry and the existence of an internal skeleton. Deuterostomy establishes a link between the echinoderms and the chordates, and the possibility that they are both descended from a common ancestor.

The relationship between invertebrates, such as echinoderms, and vertebrate organisms has been studied, establishing that hemicordates are the link that links both types of organisms.

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