5-1: Vertebrates are animals with endoskeletons.
Pg. 157-163
Date: _____________
1. Vertebrate: (Pg. 157)
An animal with an internal backbone
2. Endoskeleton: (Pg. 157)
An internal support system; such as a skeleton made of bone
tissue, a distinguishing characteristic of vertebrate animals
3. Scale: (Pg. 161)
One of the thin, small, overlapping plates that cover most fish
and reptiles and some other animals
5-2: Amphibians and reptiles are adapted for life on land.
Pg. 164-172
Date: _____________
1. Amphibian: (Pg. 167)
A cold-blooded vertebrate animal that lives in water and
breathes with gills when it is young. As an adult, it moves onto
land and breathes air with its lungs
2. Reptile: (Pg. 168)
A cold-blooded vertebrate that has skin covered with scales or
plates and has lungs
3. Ectotherm: (Pg. 170)
An animal whose body temperature changes with
environmental conditions
5-3: Birds meet their needs on land, in water, and in the air.
Pg. 173-181
Date: _____________
1. Endotherm: (Pg. 174)
An animal that maintains a constant body temperature
2. Incubation: (Pg. 179)
The process of keeping eggs warm by bodily heat until they
hatch
5-4: Mammals live in many environments.
Pg. 182-187
Date: _____________
1. Mammal: (Pg. 183)
A warm-blooded vertebrate animal whose young feed on milk
produced by the mother’s mammary glands
2. Placenta: (Pg. 186)
An organ that transports materials between a pregnant female
mammal and the offspring developing inside her body
3. Gestation: (Pg. 186)
In mammals, the period of time spent by a developing
offspring inside the mother’s body