What characteristics do all animals share? Multi-cellular, heterotrophic, eukaryotic, lack cell walls Single-celled, heterotrophic, prokaryotic, lack cell walls Single-celled, autotrophic, prokaryotic, have cell walls Multi-cellular, autotrophic, eukaryotic, have cell walls

Multi-cellular, heterotrophic, eukaryotic, lack cell walls

What are invertebrates? Animals with a dorsal nerve cord Animals that lack a backbone or vertebral column Animals with a backbone or vertebral column Animals that have a notochord

Animals that lack a backbone or vertebral column

What are Chordates? Phylum Mollusca, about 20% Phylum Arthropoda, more than 50% Phylum Chordates, fewer than 5% Phylum Annelida, about 10%

Phylum Chordates, fewer than 5%

What are the four characteristics that all Chordates exhibit? Dorsal solid nerve cord, notochord, tail beyond anus, gills Dorsal hollow nerve cord, notochord, tail beyond anus, pharyngeal pouches Ventral nerve cord, backbone, tail beyond anus, pharyngeal slits Ventral hollow nerve cord, backbone, tail beyond anus, lungs

Dorsal hollow nerve cord, notochord, tail beyond anus, pharyngeal pouches

What is a notochord? A long-supporting rod that runs through the body just below the nerve cord A structure that develops into the brain A fluid-filled cavity in the body A type of cell found in the nervous system

A long-supporting rod that runs through the body just below the nerve cord

What is a pharyngeal pouch? A pouch that stores food in the digestive system A cavity that holds the heart and lungs Paired structures in the throat region called pharynx that may develop into gills A pouch that contains reproductive organs

Paired structures in the throat region called pharynx that may develop into gills

What do animals do to survive? Only gather/respond to information Only obtain/distribute oxygen and nutrients Maintain homeostasis, gather/respond to information, obtain/distribute oxygen and nutrients Only maintain homeostasis

Maintain homeostasis, gather/respond to information, obtain/distribute oxygen and nutrients

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