Coelomates that develop with the blastopore becoming the mouth are protostomes. An example of a protostome would be the Caribbean reef squid.
A protostome! (or an animal with protostome-like development, like platyhelminths)
protosome
In protostome ("first mouth") the blastopore, or the first opening formed becomes the mouth. In deuterostomes ("second mouth"), the blastopore forms the anus and the mouth develops from a second opening.
Protostomes
All animals except for echinoderms (such as starfish) and chordata (mammals, reptiles, fish and birds), haemichordata (vermiform creatures and chaetognatha (worms with "hairs".).
Protostomes Deuterostomes 1.Mouth develops first then anus 1. Anus develops first then mouth 2.Blastopore develops into mouth 2.Blastopore develops into anus 3.Coelom absent and a schizocoel 3. Coelom develops as enterocoel by fusion develops by a split of mesoderm of gut pouches. 4.Cleavage is spiral and determinate 4. Cleavage is radial and indeterminate. 5.Larva is trochophore. 5. Larva is bipinnaria or tornaria 6.E.g. Molluscs, annelida & 6.E.g. Echinodermata & Chordata arthropodes
The nymph form of the mayfly does have a mouth. It feeds on plant material. The adult does not have a mouth because they mate right away and die within 3 days of becoming an adult. they do not eat as adults
In protostome ("first mouth") the blastopore, or the first opening formed becomes the mouth. In deuterostomes ("second mouth"), the blastopore forms the anus and the mouth develops from a second opening.
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
protostomes:)
blastopore.
The blastopore is an indentation that forms during early embryonic development. Its fate can differ between species, with some having the blastopore develop into the mouth (protostomes) and others into the anus (deuterostomes). This distinction is used to infer evolutionary relationships between organisms, as species that share similar blastopore fates are considered more closely related.
The mouth is formed second, after the anus.
blastopore
Neither are protostomes. Chordates, Hemichordates, and Echinoderms are all deuterostomes (in that the blastopore forms the anus first). In protostomes, the blastopore forms the mouth first.
blastopore
deuterostomes
Protostomes
Protostome means the blastopore becomes the mouth during embryonic development, and deuterostome, the anus. We're deuterostomes.