Fish
What do gills do?
Obtain oxygen from water
Where do amphibians usually begin life?
In water
What type of skin do reptiles have?
Dry scaly skin
What characteristic is unique to birds?
What characteristic is found only in mammals?
Live birth/Hair or fur
What structure helps fish move and balance?
Fins
What process changes a tadpole into a frog?
Metamorphosis
What adaptation helps reptiles live farther from water?
Scaly skin/Amniotic egg
Why are birds called endothermic?
They maintain their own body heat
How do mammals feed their young?
Milk from mammary glands
Why are scales important to fish?
Protection/reduce water resistance
Why do amphibians need moist environments?
Their eggs dry out easily
Reptiles breathe using what?
Lungs
What adaptation helps birds fly?
Hollow bones
What does it mean that mammals are endothermic?
Maintain stable internal body temperature
What adaptation helps fish avoid predators?
Camouflage
What do adult amphibians use to breathe?
Skin and lungs
Why are reptile eggs called amniotic eggs?
Protective membrane/fluid for embryo
A bird’s beak shape is related to what?
Habitat and diet
Which adaptation helps mammals survive in cold climates?
Fur and body fat
Sharks are different from many fish because they have skeletons made of what?
Cartilage
Why are amphibians environmental indicators?
Their skin reacts quickly to pollution
How do reptiles conserve water?
Dry scales/water proof skin
Why do birds migrate?
To find food and suitable climate
What is an advantage of internal fertilization in mammals?
More protection for embryos