Identify the organism that is NOT a pseudocoelomate.

Question

Question

This question was previously asked in

SSC CGL 2022 Tier-I Official Paper (Held On : 02 Dec 2022 Shift 1)

Answer 1

The 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.

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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".