Biology (Mader), 10th Edition

Chapter 32: Circulation and Cardiovascular Systems

Pre-Test

1
Which of the following lacks a circulatory system?
A)Paramecium
B)Planarian
C)Jellyfish
D)All of these
2
A closed circulatory system has _____.
A)a system of blood vessels
B)a heart
C)valves to prevent backflow
D)All of these
3
Hemolymph contains _____.
A)tissue fluid
B)blood
C)oxygen
D)All of these
4
Which of the following is absent in an animal with a closed circulatory system?
A)A heart
B)A hemocoel
C)Blood vessels
D)None of these
5
Blood is carried away from the heart by _____.
A)arteries
B)veins
C)capillaries
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