What is true of coelom development in protostomes?Multiple choice question.The coelomic cavity forms from an indentation of a hollow ball of cells during embryonic development.Groups of mesodermal cells pouch off the end of the archenteron to form the coelomic cavity.Mesodermal cells move apart to form the coelomic cavity.The coelomic cavity develops embryologically between the mesoderm and endoderm.
Question
What is true of coelom development in protostomes?Multiple choice question.The coelomic cavity forms from an indentation of a hollow ball of cells during embryonic development.Groups of mesodermal cells pouch off the end of the archenteron to form the coelomic cavity.Mesodermal cells move apart to form the coelomic cavity.The coelomic cavity develops embryologically between the mesoderm and endoderm.
Solution
The correct answer is: "Mesodermal cells move apart to form the coelomic cavity."
In protostomes, which include many invertebrates like mollusks and annelids, the coelom (body cavity) forms by a process called schizocoely. During this process, a mass of mesodermal cells develop in the embryo. These cells move apart to create a cavity, which becomes the coelom. This is different from deuterostomes, like humans, where the coelom forms from pouches pinched off of the digestive tract, a process called enterocoely.
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