A blastopore is a term for the opening into the archenteron in embryology.
No, a jellyfish is not a blastopore. A blastopore is the opening of the central cavity of an embryo during early development, while a jellyfish is a gelatinous marine animal belonging to the phylum Cnidaria.
blastopore
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:)
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The blastopore is located at the site of the invagination during the early stages of embryonic development in organisms that undergo gastrulation. In protostomes, it typically develops into the mouth, while in deuterostomes, it usually becomes the anus. The position of the blastopore is crucial for determining the body plan of the developing organism.
Its a deuterostome
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.
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.
gastrulation
The opening outside of the gastrula is called the blastopore. It is the initial opening that forms during gastrulation, where cells migrate to form the three germ layers.