perpo5210 perpo5210
  • 25-01-2024
  • Biology
contestada

In which phylum do we first see muscles and nerves in their simplest form?
1) Protozoa
2) Nematoda (roundworms)
3) Platyhelminthes (flatworms)
4) sponges
5) Cnidaria (jellyfish etc)

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