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Solution


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    [2025]
1 Acoelomate  
2 Pseudocoelomate  
3 Schizocoelomate  
4 Spongocoelomate  

Ans.

(2)

In pseudocoelomates, the body cavity is not entirely lined with mesoderm, instead, mesodermal tissue is present along the body wall but not towards the gut.

    •   Schizocoelomates are animals whose coelom or body cavity develops middle from a split in the mesoderm, the middle germ layer of the embryo.

    •   In acoelomates, coelom is absent.

Spongocoel is a central cavity found in Sponges.