Chordates are animals with vertebrates.
Notochord
all vertebrates are chordates because vertebrates are the sub- group of phylum chordates and also it follow one of the important feature of the chordates i.e. presence of notochord whereas all chordates are not vertebrates because some chordates are cephalochordates, urochordates.
There isn't a "popular name" for them. The most familiar chordates are the vertebrates, but not all chordates are vertebrates (tunicates, for example, are chordates).
Chordates are not vertebrates because although some vertebrates are chordates theres many reasons why chordates arent vertebrates.the first reason is because chordates consist of a notochord or a dorsal nerve.
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write sentence of assessment
Chordates are a group of animals which include vertebrates (animals having a spinal column), so yes, birds are chordates.
Chordates such as the sea squirts and lancelets do not have a backbone that is why they are called vertebrate chordates.
Yes, hemichordates are not chordates as they are their own phylum.
i write the same sentence
Lancelets are considered true chordates because they possess a notochord, dorsal nerve cord, pharyngeal slits, and a post-anal tail at some stage in their life cycle, which are characteristic features of chordates. They are believed to represent an early evolutionary stage of the chordates.
look in the wikipedia