The option which is not a characteristic of chordates is chloroplasts in their cells.
Chordates do have a dorsal supporting rod (vertebrates are types of chordates - they have a spine), a dorsal hollow nerve cord (within the spine), and pharyngeal pouches. However, they do not have chloroplasts, because that is a characteristic of photoautothropic eukaryotes, which chordates certainly are not.
Answer:
There are no options to answer your question.
Explanation:
Analogous. This means they share a similar function (flight) but do not have the same embryonic origin.
It would be, (B) It enables scientists to better differentiate among the various species.