In acoelomates gut is ________ in origin.
Correct answer: B. Endodermal
- A. Ectodermal
- B. Endodermal
- C. Mesodermal
- D. None of these
Explanation
In acoelomate animals, the digestive tract is an endodermal structure, while mesoderm fills the region between the gut and body wall. Students may choose c because mesoderm occupies much of the interior, but it does not form the gut lining.
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