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_
Keep practising Animal Kingdom
Browse all Animal Kingdom questions for AP Intermediate 1st Year, or explore more Biology topics.
Related questions
The segmentation seen in the earthworm is called:A body divided into segments with repeated organs shows:Animals with no body cavity at all are called:A cavity not lined by mesoderm is called a:Animals possessing a true coelom are called:A body cavity lined by mesoderm is called the:The mesoderm lies in the embryo between the endoderm and the:Animals whose embryo also has mesoderm are called: