Pharyngeal gill slits
A. are unique chordate characteristic
B. are found in fishes, crabs, snails, aquatic insects
C. are found in higher invertebrates and vertebrates
D. are not found in protochordates, but are present in vertebrates, at least during the embryonic life.
Answer:A
Pharyngeal gill slits
A. are unique chordate characteristic B. are found in fishes, crabs, snails, aquatic insects C. are found in higher invertebrates and vertebrates D. are not found in protochordates, but are present in vertebrates, at least during the embryonic life.