Question

20
IN
All vertebrates are chordates but au chordwes cute non
vertebrates
All chordates possess notochord (active at night) in some je
of their development. All vertebrates also have notochord der
embryonic dile, which is dotex replaced by vertebral
Therefore all vertebrates are chordates.
But some chandates like Urochordata do not pastos
vertebral column and hence they are not vertebrate from which lesson​

Answer 1

Answer:

All chordates have a notochord at some stage in their lives, but in some (such as tunicates) the notochord is lost in the adult, whereas in others (such as the vertebrates) the notochord is present in the embryo, but in later stages is largely replaced and surrounded by the vertebrae, or backbones.

Explanation:

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