Question
Download Solution PDFIdentify the organism that is NOT a pseudocoelomate.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Scorpions.
Key Points
- The coelom is the fluid-filled cavity between the body wall and the gut wall.
- The coelom is lined by mesoderm.
- The coelom is one of the characteristic features of metazoans.
- Based on the presence or absence of coelom, organisms are classified into three groups:
- Coelomates
- Pseudocoelomates
- Acoelomates
- In Pseudocoelomates, the body cavity is not lined by mesoderm.
- Aschelminthes are pseudocoelomate organisms.
Additional Information
- The coelom is the principal body cavity in most animals, located between the intestinal canal and the body wall.
- Coelomates refer to animals having fluid-filled body cavities called coeloms located within the mesoderm. Annelids, molluscs, arthropods, and echinoderms are some examples of Coelomates.
- Pseudocoelom means "false coelom" or "false cavity".
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