Question

The body of the aschelminthes is --- in cross-section.

• A. triangular
• B. square
• C. oval
• D. circular

Answer 1

Answer:

D. circular

Phylum Aschelminthes:

• The body of the aschelminthes is circular in cross-section, hence the name roundworms. 
• They may be free-living, aquatic and terrestrial or parasitic in plants and animals. 
• Roundworms have organ-system level of body organisation.
• They are bilaterally symmetrical, triploblastic and pseudo-coelomate animals.