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Protostome blastopore becomes3/11/2023 : any of a major division (Deuterostomia) of the animal kingdom that includes the bilaterally symmetrical animals (such as the chordates) with indeterminate cleavage and a mouth that does not arise from the blastopore. : any of a major group (Protostomia) of bilateral metazoan animals (such as mollusks, annelids, and arthropods) characterized in typical forms by determinate and spiral cleavage, formation of a mouth and anus directly from the blastopore, and formation of the coelom by splitting of the embryonic mesoderm - compare. Deuterostomes include more complex animals such as chordates but also some “simple” animals such as echinoderms. In which of the following stages a blastopore occurs Hint: Blastopore is the opening of archenteron which is mouth like. Digestive tube (c) Fate of the blastopore. If that blastopore becomes the mouth of the animal, the animal is a protostome, and if it forms an anus, the animal is a deuterostome. Protostome development (examples: molluscs, annelids) Deuterostome development (examples: echinoderms, chordates) Anus. Is an earthworm Deuterostome Earth worms are in the phylum Annelida. Earthworms have a large cavity called the coelom, which runs through the length of the whole body. This is why earthworms are called protostomes. Protostomes include arthropods, mollusks, and annelids. In protostome development, the blastopore becomes the mouth In deuterostome development, the blastopore becomes the anus. The blastopore, the opening through which the cells migrated to form the three-layered embryo, will eventually become the mouth. What are protostomes and deuterostomes examples? Now, we have got the complete detailed explanation and answer for everyone, who is interested! This is a question our experts keep getting from time to time. Protostomes vs Deuterostomes The key difference between protostomes and deuterostomes is the fate of the blastopore during their embryonic development.
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