Cephalochordates e.g. Amphioxus ,; tunicates , acorn worms etc. are nonvertebrate chordates , they are collctively called protochordates .
Bottom of the ocean
tunicates and lanceletes
Chordates are the organisms that have a rod like cartilagenous structure called notochord which gives rise to nervous system. These have pharyngeal gill slits. Nonchordates are the organisms that do not have a notochord. These do not have pharyngeal gill slits.
No. Porifera is a nonvertebrate phylum which includes sponges.
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).
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.
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.
Chordates are animals with vertebrates.
Chordates are a group of animals which include vertebrates (animals having a spinal column), so yes, birds are chordates.
Yes, hemichordates are not chordates as they are their own phylum.
Chordates such as the sea squirts and lancelets do not have a backbone that is why they are called vertebrate chordates.
look in the wikipedia