Which of the following is not a type of organ | vedclass

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(D) The classification of animals based on the presence or absence of a body cavity (coelom) between the body wall and the gut wall divides them into

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Enterocoelomate

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(D) The classification of animals based on the presence or absence of a body cavity (coelom) between the body wall and the gut wall divides them into three main categories: $1$. $Acoelomates$: Animals in which the body cavity is absent (e.g., Platyhelminthes). $2$. $Pseudocoelomates$: Animals in which the body cavity is not lined by mesoderm, but is present as scattered pouches (e.g., Aschelminthes). $3$. $Coelomates$: Animals possessing a true body cavity lined by mesoderm (e.g., Annelida to Chordata). 'Enterocoelomate' refers to the mode of formation of the coelom (from the archenteron) rather than a primary category of classification based on the presence or absence of the coelom itself. Therefore, $D$ is the correct answer.

Which of the following is not a type of organism based on the presence or absence of a coelom?

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