Which of the following statements is correct?

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(C) Option $A$ is incorrect because sponges exhibit cellular-grade organization,not tissue-grade.Option $B$ is incorrect because Platyhelminthes have

Vedclass · Accepted Answer

In roundworms (Aschelminthes),mesoderm is present as scattered pouches between the ectoderm and endoderm,so they have a pseudocoelom.

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(C) Option $A$ is incorrect because sponges exhibit cellular-grade organization,not tissue-grade.Option $B$ is incorrect because Platyhelminthes have an incomplete digestive system (a single opening serves as both mouth and anus),which is characteristic of a blind-sac body plan.Option $C$ is correct. In Aschelminthes,the mesoderm is present as scattered pouches between the ectoderm and endoderm,resulting in a pseudocoelom.Option $D$ is incorrect because Platyhelminthes are acoelomates,meaning they lack a body cavity,despite being triploblastic (having mesoderm).

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