Question:
An organism is triploblastic but lacks a body cavity. It is:
An organism is triploblastic but lacks a body cavity. It is:
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Platyhelminthes (Flatworms) = Acoelomate; Nematodes (Roundworms) = Pseudocoelomate; Annelids/Echinoderms = Coelomate.
Updated On: Jun 10, 2026
- Ascaris
- Pheretima
- Fasciola
- Asterias
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Concept
Classification of animals based on coelom (body cavity).
Step 2: Analysis
Triploblastic animals without a body cavity are known as acoelomates. *Fasciola* (a flatworm) is an acoelomate. *Ascaris* is a pseudocoelomate, while *Pheretima* and *Asterias* are eucoelomates.
Step 3: Conclusion
*Fasciola* matches the description of a triploblastic acoelomate.
Final Answer: (C)
Classification of animals based on coelom (body cavity).
Step 2: Analysis
Triploblastic animals without a body cavity are known as acoelomates. *Fasciola* (a flatworm) is an acoelomate. *Ascaris* is a pseudocoelomate, while *Pheretima* and *Asterias* are eucoelomates.
Step 3: Conclusion
*Fasciola* matches the description of a triploblastic acoelomate.
Final Answer: (C)
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