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Ribbon-like acoelomates with bilateral symmetry are examples of _____.


Cnidarians: jellyfish

Platyhelminthes: flat worms

Nemotoda: round worms

Mollusca: mollusks

Annelida: segmented worms

Verified Answer :

JcAlmighty

The answer is Platyhelminthes: flat worms

Among those groups, cnidarians have radial symmetry so this choice is incorrect.
Among the rest groups, only Platyhelminthes are acoelomates, while other groups are coelomates. Thus, Ribbon-like acoelomates with bilateral symmetry are examples of Platyhelminthes.

Answer:

The correct answer is platyhelminthes: flatworms.

Explanation:

Platyhelminthes are generally known as tapeworms or flatworms, these species are ribbon-like and are soft-bodied invertebrates. Some of the species of this phylum live as parasites in animals and human beings. The most distinguishing characteristic of these invertebrates is their flat and ribbon-like appearance.  

Some of the characteristics of Platyhelminthes are that their body is dorsoventrally flattened, they show radial symmetry, they do not possess a body cavity and thus are known as acoelomate, they are triploblastic comprising three germ layers, and their body is soft and unsegmented.  

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