While trying to find out the characteristic of a newly found animal, a researcher did the histology of an adult animal and observ…

Question

While trying to find out the characteristic of a newly found animal, a researcher did the histology of an 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. Acoelomate
2. B. Pseudocoelomate (Correct answer)
3. C. Schizocoelomate
4. D. Spongocoelomate

Correct Answer

Option B — Pseudocoelomate

Detailed Solution & Explanation

The correct answer is Pseudocoelomate.

Key Points

• In pseudocoelomates, the body cavity is not fully lined by mesoderm — mesodermal tissue is present as scattered pouches only along the body wall, not around the gut.
• Acoelomates lack a coelom; schizocoelomates have a true coelom formed by splitting of mesoderm; 'spongocoel' is the central cavity of sponges (not a coelom type).