Comparing Invertebrate and Vertebrate Animals
**All animals are multicellular and are heterotrophs (can’t make food)**
Invertebrates:
No backbone!!
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Millions of invertebrates on Earth
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95% of all animals on Earth are •
invertebrates
35 animal phyla­34 are invertebrates!
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Some have exoskeletons (outside •
skeleton)
Largest group is the arthropods
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Less advanced than vertebrates
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Vertebrates:
Backbones!!
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Endoskeleton (inside skeleton) and •
muscles
Blood in vessels and lungs/gills for •
breathing
Protective skin covering
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Most have legs, wings, or fins for •
movement
Nervous system with a brain
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Some vertebrates are endothermic •
(warm­blooded) and some are ectothermic (cold­blooded)
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