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Pre-Test
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1
Which does not belong in this list?
A)tadpole
B)salamander
C)toad
D)turtle
2
Most animals are
A)vertebrates.
B)homeotherms.
C)asymmetrical.
D)poikilotherms.
3
Sessile organisms
A)are attached to substrate--stay in one place.
B)are generally filter feeders.
C)usually have free-swimming larval stages.
D)All the above.
4
A body cavity which separates the gut from the outer body is called a
A)coelom.
B)mesentery.
C)medusa.
D)polyp.
5
The first animals to live on land found the environment favorable because ______________ on land than in water.
A)it was easier to move
B)temperatures varied less
C)gas exchange (O2 and CO2) was easier
D)there were many more unfilled niches





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