NEET 2025 · BiologyCoelomPrevious Year Question
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 coelom of that animal?
Answer: (D) Pseudocoelomate. In a true coelomate the body cavity is fully lined by mesoderm.
- A.Schizocoelomate
- B.Spongocoelomate
- C.Acoelomate
- D.Pseudocoelomate✓
Correct Answer
(D) Pseudocoelomate
Solution & Explanation
In a true coelomate the body cavity is fully lined by mesoderm. Here mesoderm is present only as scattered tissue between the body wall and gut and not as a continuous lining around the alimentary canal, which is the defining feature of a pseudocoelom. Such animals (e.g. aschelminthes) are pseudocoelomates. NCERT Reference: Page 39, line 13-18
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