How are flatworms not similar to roundworms?
Correct answer: A. They are both acoelmates
- A. They are both acoelmates
- B. They are both triploblastic
- C. They both show bilateral symmetry
- D. They are both worms
Explanation
Flatworms belong to the phylum Platyhelminthes. They do not have a coelom, respiratory system or a circulatory system.Tapeworms flukes are examples of flatworms. They have bilateral symmetry. They are triploblastic.Roundworms are part of the phylum Nematoda. They are bilaterally symmetrical invertebrates.They have a psuedocoelom. Ascaris lumbricodes is the most common human parasite. They are also triploblastic.Hence, option A is correct.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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