Multicellular animals are thought to have evolved from single-celledprotists resembling the choanoflagellates that exist today. Describesome specific advantages to multicellularity that gave animals anadvantage over their single-celled relatives.
Animal Diversity
Nematodes are commonly known as roundworms. They are free-living, very tiny organisms. They have an elongated and tubular body. These organisms have a nervous system and are mostly act as parasites to both animals and plants.
Platyhelminthes
Platyhelminthes are also known as "flatworms" because as they are dorsoventrally flattened from head to tail. They are invertebrate, soft-bodied, acoelomate, unsegmented and have bilateral symmetry.
Multicellular animals are thought to have evolved from single-celled
protists resembling the choanoflagellates that exist today. Describe
some specific advantages to multicellularity that gave animals an
advantage over their single-celled relatives.
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