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Ch. 29 STP

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
In protostomes, the blastopore develops into the
a.
ectoderm
b.
mouth
c.
anus
d.
deuterostomes
e.
spiracles
 

 2. 
Which trend did NOT occur during invertebrate evolution?
a.
specialization of cells
b.
loss of a true coelom
c.
segmentation of bodies
d.
bilateral symmetry
e.
cephalization
 

 3. 
All animals have some form of body symmetry EXCEPT
a.
sponges
b.
jellyfishes
c.
worms
d.
arthropods
e.
echinoderms
 

 4. 
What is a function of the excretory system?
a.
to supply cells with oxygen and nutrients
b.
to rid the body of metabolic wastes
c.
to exchange oxygen and carbon dioxide with the environment
d.
to gather information from the environment
e.
to break down food
 

 5. 
Specialized tissues used to move, breathe, and pump blood are called
a.
germ layers
d.
muscles
b.
excretory systems
e.
ectoderms
c.
endoderms
 

 6. 
Which invertebrates have an open circulatory system?
a.
most mollusks only
b.
arthropods only
c.
annelids only
d.
arthropods and most mollusks
e.
arthropods and annelids
 

 7. 
The concentration of nerve tissue and organs in one end of the body is called
a.
cephalization
d.
body symmetry
b.
segmentation
e.
nerve nets
c.
diffusion
 

 8. 
Which of the following do NOT have a mesoderm?
a.
jellyfishes
d.
octopi
b.
earthworms
e.
snails
c.
flatworms
 

 9. 
Look at the student’s two samples. What can you conclude?
a.
Sample A is the control
b.
Sample B is the control
c.
Either sample can serve as the control
d.
This is not a controlled experiment
e.
Controlled experiments do not work with living organisms
 

 10. 
The student finds that the worms from sample A have a faster heart rate than the worms from sample B. What conclusion can be drawn?
a.
The worms in sample A are healthier than the worms in sample B.
b.
A decrease in body temperature corresponds to an increase in heart rate.
c.
There is no relationship between body temperature and heart rate.
d.
A decrease in body temperature corresponds to a decrease in heart rate.
e.
The worms in sample A will not live as long as the worms in sample B.
 



 
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