Section 1
Section 2
Section 3
Section 4
100
This is an animal with a backbone
What are vertebrates
100
Fish evolved into this group of animal
What are amphibians
100
This type of feather keeps warm air close to the body for birds
What are down feathers
100
Most mammals have these two types of hear
What are underhairs and guard hairs
200
This is an internal support system that grows with an organism
What is an endoskeleton
200
This group of animal lays its eggs in water and obtain oxygen through the skin
What are amphibians
200
Birds appeared 150 million years ago and are believed to have evolved directly from this group
What are repltiles
200
This specialized hair on a porcupine is used in self defense
What are quils
300
Most vertebrates are this
What are fish
300
This animal has adaptations for hot dry places
What is a reptile
300
This feature of a bird skeleton makes it lightweight allowing it to fly
What are hollow bones
300
This is stored between skin and muscles and is used in mammals for insulation from heat and cold
What is blubber
400
This helps fish to control the depth at which they float
What is a swim bladder
400
These groups of animals are ectotherms
What are amphibians and reptiles
400
Nearly all birds use their body heat to keep the eggs warm. They will sit on eggs until they are ready to hatch
What is incubation
400
This in mammals transports nutrients, water, and oxygen from the mother's blood
What is a placenta
500
These are the 3 groups of fish
What are jawless fish, cartilaginous fish, and bony fish
500
This the order of evolution beginning with fish and ending with amphibians
fish--> amphibians--> reptiles
500
This the process of evolution starting with fish and ending with birds
fish-->amphibians-->reptiles-->birds
500
This is a special kind of mammal that includes kangaroos
What are marsupials
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