a multicellular organism is large enough to be visible
multicellular_algae is multicellular_organism. multicellular_organism_cells is not cell. multicellular_algae is not multicellular_organism. multicellular_zygote is multicellular_organism. multicellular_organism is not living_organism. vertebrate is multicellular_organism. multicellular_organism is living_organism. multicellular_organism_cells is cell. vertebrate is not multicellular_organism. gametophyte is multicellular_organism.