There are more species in the insect group of phylum Arthropoda than all other animal phyla combined.True False
Sponges were the earliest animals to evolve true tissues.
The overwhelming majority of animals are:
A marine animal with tube feet and radial symmetry is certainly an echinoderm.
Which group is most closely related to the echinoderms?Chordates Arthropods Nematodes Molluscs Annelids
There is far more animal diversity in the ocean than on land in part because animals first evolved in the ocean.
Whereas all animals are multicellular, some are nevertheless microscopic.