At the present day feiy groups of the animal kingdom are so well known to the microscopist, few groups present more interesting affinities to the morphologist, and few multicellular animals such a low physiological condition. [Please select]
0
The phylum Porifera or Spongiæ includes the simplest of the Metazoa or multicellular animals. [Please select]
0
: the living unit; protoplasm differentiated into cytoplasm and nucleus, from which units all but the lowest plants and animals are developed by division and consequent increase into a multicellular condition: a compartment or division of a nest or honey-comb. [Please select]
Do you have a better example in your mind? Please submit your sentence!