Mammals
Birds
Fish
Amphibians
Reptiles
100
Animals like chimpanzees, humans, and apes
What is a primate?
100
Large muscle required for flight
What is the keel?
100
Cells that help fish sense danger
What is a lateral line system?
100
The reason vertebrates can breathe through their skin?
What is thin moist skin?
100
shelled place in which a reptile embryo develops
What is the amniotic egg?
200
A mammal that lays eggs
What is a monotreme?
200
Type of feathers that keep birds warm
What is a downy feather?
200
Coating of a cartiliginous fish
What is denticles?
200
The juvenile form of a frog is called a __________.
What is tadpole?
200
a cold-blooded animal
What is an ectotherm?
300
A feature of mammals by which they give nutrients to their young
What is mammary glands?
300
The reason birds are so light, which helps flight
What is hollow bones?
300
The structure in a fish's body that helps them breathe oxygen underwater
What are gills?
300
The phrase used to describe amphibians; it's because they often die off or have mutations when there are pollutants in an ecosystem.
What is "barometer of the environment?"
300
Legless reptiles
What is a snake?
400
Mammal like reptile ancestor of mammals
What is a therapsid?
400
Birds get enough energy for flight because they have a _________________ and they eat ___________.
What is fast metabolism? and a lot?
400
How fish reproduce
What is external fertilization?
400
Worm like, legless amphibian that lives underground and in soil
What is a caecilian?
400
what separates turtles and tortoises from other reptiles
What is a shell?
500
Mammal group that includes the dugong
What are sirenians?
500
Part of a bird's digestive system that grinds up food
What is the gizzard?
500
The only class of fish that can live for a significant time out of water
What is a lungfish?
500
The change from a larval form to an adult form
What is metamorphosis?
500
When reptiles appeared on Earth
What is about 300 million years ago?
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