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WARRIOR [948]
2 years ago
10

What are the three unifying characteristics of chordates?

Biology
2 answers:
Alexxx [7]2 years ago
8 0

Answer:

D) Notochord, gill slits, dorsal nerve cord

Explanation:

Notochord:  is an embryonic midline structure common to all members of the phylum Chordata. It provides rigid support. It is flexible rodlike structure of mesodermal cells.

Gill slits: In most land- living chordates, the "gill slits" are present only in embryonic stages.In fishes and some amphibians, the slits bear gills and are used for gas exchange.

Dorsal nerve cord: The dorsal hollow nerve cord is a hollow cord dorsal to the notochord. It is formed from a part of the ectoderm. It develops into the central nervous system: the brain and spine.

ycow [4]2 years ago
6 0
Answer is D. Notochord, gill slits, dorsal nerve cord.
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