51) Annelids demonstrate the important animal characteristic of body segmentation.
52) : 1380898.
51) Annelids demonstrate the important animal characteristic of body segmentation.
52) Corals exhibit the polyp body form only.
53) There are both aquatic and terrestrial species in the phylum Mollusca.
54) There are more species in the insect group of phylum Arthropoda than all other animal phyla combined.
55) A marine animal with tube feet and radial symmetry is certainly an echinoderm.
56) All chordates are vertebrates.
57) Copulation is necessary for all animals using internal fertilization.
58) Mammals are the only group of animals to demonstrate significant protection of their young.
59) Blood stays within vessels in a closed circulatory system.
51) Annelids demonstrate the important animal characteristic of body segmentation.
52) : 1380898
