evolution
reptiles
have a heart
birds
organs
100
birds evolved from ____________
reptiles (dinosaurs)
100
this allowed to reptiles to stop needing to return to water and live entirely on land
amniotic egg
100
fish have this many heart chambers
2
100
this is how birds generate body heat
metabolism
100
in addition to lungs, birds have these attached
air sacs
200
amphibians evolved from ______________
fish
200
unlike frogs who lower there jaw to breath, reptiles have this to help them breath
rib cage
200
birds have this many heart chambers
4
200
the smaller feathers used for insulation, and for pillows are called
down feathers
200
organ below esophagus that stores birds eaten food
crop
300
reptiles evolved from _____________
amphibians
300
this is how reptiles generate body heat
basking
300
turtles have this many heart chambers
3
300
the bone that controls flight is called the _______
sternum
300
organ filled with rocks that chews food for the bird
gizzard
400
mammals evolved from ______________
stem mammal (dimetrodon)
400
organ near snakes brain that lets it process odors picked up by its tongue
jacobsons organ
400
crocodiles have this many heart chambers
4
400
the big feathers used for waterproofing and aerodynamics are called
contour feathers
400
outer organ the secretes oil used to maintain feathers
preen gland
500
insects evolved from ________________
crustaceans
500
the scientific name for a turtles shell is called a _____________
carapace
500
amphibians have this many heart chambers
3
500
scientific word for generates own body heat
endotherm
500
exit point for birds reptiles and amphibians
cloaca