alleryWhich pair of features is characteristic of phylum Aschelminthes?
AAcoelomate, closed circulatory system
BCoelomate, incomplete alimentary canal
CPseudocoelomate, complete alimentary canal
DDiploblastic, radial symmetry
Answer & Solution
Correct answer: C. Pseudocoelomate, complete alimentary canal
1. Aschelminthes (roundworms) are triploblastic and bilaterally symmetrical.
2. Their body cavity is a pseudocoelom, not a true coelom.
3. The alimentary canal is complete: mouth at one end and anus at the other.
4. Sexes are separate (dioecious) and Ascaris is a classic example.
_Source: syllabus Biology, Ch 4 "Animal Kingdom", §4.2.5_
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