Organisms with vertebrae may or may not have other traits for chordates such as pharyngeal slits, notochord, nerve cord, post-anal tail.? True or False

Question

is this fact is true or false about organisms with vertebrae

True or False?

Answer 1

This is true!

Organisms with vertebrae are called vertebrates, which is a subphylum of the phylum Chordata. By definition, every chordate (chordata) has a notochord, hollow nerve cord, past-anal tail and pharyngeal slits AT SOME POINT in their life, although most often these traits appear in embryonic development and disappear before birth.

In other words, organisms with vertebrae have all four of those traits at some point in their life, but they then often disappear. This is true of all chordates, including vertebrates

For example, humans (vertebrates) grow a tail as an embryo, which then recedes before birth and becomes the tail bone.