Chapter 32:
Mammals
Practice Test
1.
Therapsids had legs that were most like those of __________.
a.
birds
b.
amphibians
c.
mammals
d.
reptiles
Hint
2.
Mammals can live in every environment on Earth because they are
a.
monotremes
b.
endotherms
c.
ecotherms
d.
predators
Hint
3.
The organ(s) that helped mammals become successful in protecting developing young from predators was/were __________.
a.
teeth
b.
claws
c.
the uterus
d.
legs
Hint
4.
Mammals have a higher rate of metabolism necessary for regulation of __________.
a.
body temperature
b.
breathing
c.
locomotion
d.
heart rate
Hint
5.
Mammals have different kinds of teeth adapted to the type of __________.
a.
maternal care given
b.
protection needed
c.
food eaten
d.
locomotion the animal has
Hint
6.
A mammal that carries its young inside the uterus until development is almost complete is a __________.
a.
bat
b.
monotreme
c.
marsupial
d.
placental
Hint
7.
Therapsids had lower jaw and ear bones like those of __________.
a.
birds
b.
amphibians
c.
reptiles
d.
mammals
Hint
8.
The reason that most marsupials are found in Australia today is because of __________.
a.
extinction of dinosaurs
b.
continental drift
c.
volcanism
d.
glaciation
Hint
9.
The mammalian brain is folded and has ridges and grooves, giving it __________.
a.
memory
b.
a high metabolism
c.
a large surface area
d.
more nerves
Hint
10.
Mammals cool off by panting and by means of __________.
a.
diaphragms
b.
mammary glands
c.
thyroid glands
d.
sweat glands
Hint
11.
When the dinosaurs disappeared, the niches that opened up were filled by __________.
a.
amphibians
b.
lizards
c.
mammals
d.
birds
Hint
12.
Scientists place mammals into one of three subclasses based on their method of __________.
a.
breathing
b.
caring for young
c.
reproduction
d.
feeding
Hint
13.
The diaphragm allows the chest cavity to __________.
a.
cool down
b.
receive oxygen
c.
pump blood
d.
expand and contract
Hint
14.
Mammals that have more than one stomach are __________.
a.
marine animals
b.
hoofed animals
c.
insectivores
d.
rodents
Hint
15.
The Cenozoic era is called the golden age of __________.
a.
dinosaurs
b.
mammals
c.
fishes
d.
amphibians
Hint
