Invertebrates were living very long ago they were devided into lots of categories and they were
"Flat worms and Round worms-Mollusks which was discused it before-Arthropods which is next-Cnidarians-Echinoderms"
Flat and Round worms:reproduce Sexually.
Moluusks:Sexually.
Arthropods:Sexually and by the way Arthro means jointed and Pods means legs.
Cnidarians:They have a hollow body and reproduce sexually and asexually.
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