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Chapter 1 Lsn. 4
Classifying Animals
Term | Definition |
---|---|
marsupials | Animals that have pouches to carry their under-developed young in. |
birds | Animals with two legs, two wings, and hollow bones |
cnidarians | Have a mouth tentacles and muslce tissue |
cartilage | A material that gives your ear its stiffness |
swim bladder | Part of a fish that allows them to go up and down in the water |
asymmetrical | their body cannot be divided into mirror images |
invertebrates | animals without backbones |
radial symmetry | A type of body with body parts arranged around a central point |
placental mammals | have babies that grow inside them |
mollusks | group that includes snails, clams and squids |