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This is straight from dictionary.com, so no credit for me:
"any member of the lower invertebrate phyla in which the mouth appears before the anus during development, cleavage is spiral and determinate, and the coelom forms as a splitting of the mesoderm." That help? :)
A protostome is a type of animal development in which the mouth develops before the anus. Protostomes include a vast array of invertebrate phyla, such as arthropods, mollusks, and annelids. This developmental characteristic distinguishes protostomes from deuterostomes, where the anus forms before the mouth.
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Coelomates that develop with the blastopore becoming the mouth are?
Coelomates that develop with the blastopore becoming the mouth are protostomes. An example of a protostome would be the Caribbean reef squid.
Is a lizard a deuterostome or protostome?
Protostomes. Development begins with spiral, determinate cleavage. Coelom formation then begins in the gastrula stage, the coelom forming from splits in the mesoderm. The mouth then develops from the first opening, the blastopore, and the anus develops secondarily.
Are bivalves protostomes or deuterostomes?
Bivalves are protostomes. They belong to the phylum Mollusca, which is characterized by protostome development. This means that during their embryonic development, the blastopore becomes the mouth.
Does the blastopore forms a mouth?
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.
Do protostome animals have an endoskeleton or exoskeleton system?
Tortoise have endoskeleton because as they move with the help of limbs and limbs only loco mote because they have the combination of Bones & Muscles.The shell is considered a exsoskeleton. The tortoise and turtle have both an endoskeleton and exsoskeleton. ---tylerdude1233thank you,REGARDSAAKASH PAL
What is the difference of a protostome animal and dueterostome animal?
the difference is that a duetrostome (second mouth) is the end and the protostome(first mouth) is the begining.
Coelomates that develop with the blastopore becoming the mouth are?
Coelomates that develop with the blastopore becoming the mouth are protostomes. An example of a protostome would be the Caribbean reef squid.
Is a grasshopper a deuterostome or a protostome?
protosome
Pigeons deuterostome or protostome?
deuterostomes
Are annelida protostome?
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.
What is an example of a protostome?
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.
What is the synapomorphy of the Ecdysozoa plus Lophotrochozoa clade?
protostome development
At which developmental stage should I be able to distinguish a protostome embryo from a deuterostome embryo?
Gastrulation
What does proto and deutero?
Protostome means the blastopore becomes the mouth during embryonic development, and deuterostome, the anus. We're deuterostomes.
When the layer of cells that becomes the gut of an organism indents to form a gastrula if the first indentation becomes the mouth of the organism the animal is a?
protostome
What does the blastopore become?
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
Is a lizard a deuterostome or protostome?
Protostomes. Development begins with spiral, determinate cleavage. Coelom formation then begins in the gastrula stage, the coelom forming from splits in the mesoderm. The mouth then develops from the first opening, the blastopore, and the anus develops secondarily.
