At the stage of development when the gut forms there is only a single opening into the digestive track, this opening may become either the mouth or anus. In the echinoderms, chordates, and hemichordates the blastopore becomes the anus and a new opening forms the mouth, these are called deuterostomes
An example of a protostome is a snail. Protostomes are organisms in which the blastopore, the opening of the developing embryo, becomes the mouth of the adult organism.
Chordates are a group of animals which include vertebrates (animals having a spinal column), so yes, birds are chordates.
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.
Chordates are a diverse group of animals that includes humans, and they are not inherently harmful. While some species of chordates may pose a threat due to factors like venom or aggression, the majority of chordates play important roles in ecosystems and are not harmful to humans.
They are neither a deuterostome or a protostome, since they only have one opening.
Chordata is a deuterostome. During development, deuterostomes form the anus first and the mouth second, whereas in protostomes, it is the opposite. Chordates, including humans, exhibit this deuterostome characteristic during embryonic development.
Deuterostomes. All chordates such as birds and mammals are deuterosomes.
the difference is that a duetrostome (second mouth) is the end and the protostome(first mouth) is the begining.
At the stage of development when the gut forms there is only a single opening into the digestive track, this opening may become either the mouth or anus. In the echinoderms, chordates, and hemichordates the blastopore becomes the anus and a new opening forms the mouth, these are called deuterostomes
Coelomates that develop with the blastopore becoming the mouth are protostomes. An example of a protostome would be the Caribbean reef squid.
deuterostomes
protosome
Yes, annelids belong to the protostome group of animals. Protostomes are a group of animals whose blastopore develops into the mouth first during embryonic development. Annelids, such as earthworms and leeches, exhibit characteristics consistent with protostome development.
All chordates embryos have pharngeal slits.
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.