[Campbell Biology P.768] Which of the following statements about chordates and their relativ... | Practice Question

Which of the following statements about chordates and their relatives is TRUE according to the provided text and figure?

  • A: All chordates are vertebrates.
  • B: Echinodermata are a clade within Chordates.
  • C: Cephalochordates and Urochordates are invertebrate deuterostomes classified within Chordates.
  • D: Vertebrates constitute the sister group to all other Chordates.

Explanation

The text explicitly states: 'there are two groups of invertebrate deuterostomes that are more closely related to vertebrates than they are to other invertebrates: the cephalochordates and the urochordates. Thus, along with the vertebrates, these two invertebrate groups are classified within the chordates.'