Georgia Science Grade 7

Chapter 15: Birds and Mammals

CRCT Practice

1
Which letter represents amniotic fluid?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078778425/516795/bo.jpg','popWin', 'width=220,height=278,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (13.0K)</a>
A)A
B)B
C)C
D)D
2
Which letter represents a developing embryo?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078778425/516795/bo.jpg','popWin', 'width=220,height=278,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (13.0K)</a>
A)A
B)B
C)C
D)D
3
Which feature is an adaptation that allows birds to fly?
A)a gizzard
B)bones that are almost hollow
C)a crop
D)a four-chambered heart
4
Which is a monotreme?
A)a penguin
B)an eagle
C)a kangaroo
D)a platypus
5
What part of the mammal's body is indicated by 1 through 4 in the diagram?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078778425/516795/bp.jpg','popWin', 'width=377,height=360,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (58.0K)</a>
A)small intestine
B)large intestine
C)stomach
D)gizzard
6
Which animals have this type of digestive system?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078778425/516795/bp.jpg','popWin', 'width=377,height=360,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (58.0K)</a>
A)carnivorous birds
B)carnivorous mammals
C)herbivorous mammals
D)birds that eat only nuts and seeds
7
What is the significance of Archaeopteryx?
A)It was the first birdlike fossil found.
B)It represents the direct ancestor of birds.
C)It was probably a ground-living dinosaur with wings.
D)It is the oldest birdlike fossil.
8
What is a characteristic that sets mammals apart from birds?
A)They help pollinate flowers.
B)They have a four-chambered he
C)They have special glands that produce milk for feeding their young.
D)They have a special skeleton that is lightweight but strong.
9
What is the unique characteristic of marsupials?
A)They all live in Australia.
B)Their young develop in a pouch.
C)They lay eggs.
D)They provide milk for their young.
10
What does it mean if an animal is an endotherm?
A)It has a closed circulatory system.
B)It maintains a constant body temperature.
C)It produces its own food.
D)It has an internal body temperature that changes with its surroundings.
11
Which of these is a characteristic of feather A?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078778425/516795/bq.jpg','popWin', 'width=224,height=201,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (18.0K)</a>
A)used in flight
B)gives birds their color
C)provides insulation
D)has barbs
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.