In contrast to annelids the platyhelminthes show :
Correct answer: A. Absence of body cavity
- A. Absence of body cavity
- B. Bilateral symmetry
- C. Radial symmetry
- D. Presence of pseudocoel
Explanation
Platyhelminthes do not have body cavity so they are acoelomates. In annelids, the body cavity is true and schizocoelous. Both annelids and platyhelminthes have bilateral symmetry.
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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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