Question

Which of the following invertebrates is most closely related to the vertebrates? Select all that apply.

1. echinoderms
2. cnidarians
3. arthropods
4. chordates

Answer 1

Answer: Echinoderms

Explanation:

The Echinoderms deuterosomes mouth development and bilateral symmetry in the larval stage lead some scientists to believe that they are the closest to vertebrates.

Answer 2

I would say chordates. (Not absolutely sure so double check)

Step-by-step explanation:

Chordates have a dorsal nerve cord, which is super close to a spinal cord. (Which vertebrates have.)