At some point in their lives all chordates have what characteristics?

Answer 1

All chordates have a notochord at some stage in their development, even if it is only at the embryonic stage. The notochord is a flexible structure located in front of the dorsal nerve, which all chordates also have.

Answer 2

All chordates share a notochord, dorsal nerve cord, and pharyngeal gill pouches. The notochord, a cartilaginous supporting rod, runs along the dorsal part of the body. It is always found in embryos, but in most vertebrates it is replaced during development by a backbone of bony or cartilaginous vertebrae. The tubular dorsal nerve cord, dorsal to the notochord, is formed during development by an infolding of the ectoderm. In vertebrates the nerve cord eventually becomes encased and thus protected by the backbone. The pharyngeal gill pouches appear during embryonic development on both sides of the throat region, the pharynx.

You missed one:

#1. A supportive anterior to posterior notochord

#2. A dorsal, hollow nerve cord

#3. Pharyngeal gill slits(at some point in their ontongenic development)

#4. A yolk sac(again, at some point in their ontongenic development)

Answer 3

All chordates have a notochord, a dorsal nerve cord, pharyngeal slits, and a post-anal tail at some point in their lives. These characteristics are present during the embryonic stage, but may be lost or modified as the organism develops further.

Answer 4

A Notochord, A dorsal nerve chord, Gill pouches, and a tail.

Answer 5

They all share a notochord, nerve cord, and gill slits.

Answer 6

i dont exactly know all four i forgot a few but two of them are the postanal tail and the notochord.