Fundamentholfundamenthol
NEET2025Biology
Q.

While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelome of that animal?

  1. A

    Spongocoelomate

  2. B

    Acoelomate

  3. C

    Pseudocoelomate

  4. D

    Schizocoelomate

Solution

The description — mesoderm present along the body wall but not around the gut — is the defining feature of a pseudocoelom. The body cavity is not entirely lined with mesoderm.

Acoelomates lack a coelom altogether; schizocoelomates have a true coelom formed by splitting of the mesoderm; spongocoel is the central cavity found in sponges.

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