2. Vertebrates Invertebrates
Characteristics Characteristics
• An internal skeleton • An external skeleton
articulated o exoskeleton.
• A spine or backbone • No bones or spines or
that supports the body cranium
• A cranium that • Legs, wings, simetric
protects the brain body or antennaes
• Legs, wings or fins
They are classified into They are classified into
five gropus six groups
3. Classification
Vertebrates Invertebrat
es
1. Mammals 1. Arthropods
2. Fish 2. Mollucs
3. Amphibian 3. Worms
4. Echinoderms
s
5. Cnidarians
4. Reptiles
6. Sponges
5. Birds