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?
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Pseudocoelomates have a body cavity that is partially lined with mesoderm, unlike coelomates where the entire cavity is surrounded by mesoderm. This structural difference is important in classifying animals.
In animals, coeloms are body cavities lined with mesodermal tissue. The presence of mesodermal tissue only towards the body wall and not towards the alimentary canal is characteristic of a pseudocoelomate. Pseudocoelomates have a body cavity (pseudocoel) that is not completely surrounded by mesodermal tissue, unlike true coelomates.
Thus, the correct answer is Pseudocoelomate.