Question

question 42
which of the following features are used to identify chordates?
a notochord
a tail during embryonic development
a hollow nerve cord
all of the above are features used to identify chordates.

Explanation:

Chordates are a phylum of animals. The key features that define chordates include a notochord (a flexible rod - like structure), a hollow nerve cord (which develops into the central nervous system), and a tail during embryonic development (even if it is reduced or absent in the adult form).

Answer:

All of the above are features used to identify chordates.