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12 terms

Vertebrates and Invertebrates

LIfe Science chapter 2, lesson 1 and 2
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backbone
the main bone made up of many small bones joined together, that runs along the middle of the back in some animals
vertebrate
animal with a backbone or spine
invertebrate
animal without a backbone or spine
exoskeleton
a hard outer covering that supports and protects some animals without backbones
molt
to shed an animal's outer covering
gills
organs for breathing found in fish and amphibians
amphibians
one of a large group of animals with backbones that live part of their lives in water and part on land
reptile
an animals with a backbone that has dry, scaly skin
mammal
an animal with a backbone that usually has hair on its body and feeds milk to its young
Five types of vertebrates
mammal, bird, reptile, amphibian, fish
bird
an animal with a backbone that has feathers that cover its body
fish
an animal with a backbone that has gills and lives only in water