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9 terms

Science Semester Test Ch. 16

STUDY
PLAY
T
The skeletons of all vertebrate embryos are made up of cartilage but are usually replaced by bone as they grow
T
Warm-blooded animals warm their bodies by capturing the heat released by chemical reactions in their cells
F
Cold-blooded animals only live in cold places
F
Gills allow organisms to breathe in the water as well as on land
Cartilage
A flexible tissue that gives support and protection but is not rigid like bone
Endotherms
Animals that maintain a constant body temperature despite changes in the environment
Internal
The fertilization of eggs by sperm in side the female's body
Ectotherms
Animals whose body temperatures change with the environment.
External
The fertilization of eggs by sperm outside of the female's body