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Ch. 30 Test A

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

 1. 
Which of these chordate characteristics exists as paired structures?
a.
tail
c.
pharyngeal pouch
b.
notochord
d.
nerve cord
 

 2. 
Which of the following statements about a vertebrate’s skeleton is INCORRECT?
a.
It supports and protects the body.
b.
It is an endoskeleton.
c.
It grows as the animal grows.
d.
It is made entirely of nonliving material.
 

 3. 
Lancelets belong to the phylum
a.
Urochordata.
c.
Vertebrata.
b.
Cephalochordata.
d.
Chordata.
 

 4. 
In most fishes, the structures that are most important for obtaining oxygen from water are the
a.
scales.
c.
lungs.
b.
gills.
d.
vertebrae.
 

 5. 
Fishes that lived during the late Cambrian Period
a.
lacked paired fins.
b.
had powerful jaws.
c.
had limbs.
d.
had soft bodies with little or no armor.
 

 6. 
After passing through the gills of a fish, blood circulates through the rest of the body and then collects in the
a.
atrium.
c.
bulbus arteriosus.
b.
ventricle.
d.
sinus venosus.
 

 7. 
Most fishes get rid of nitrogenous wastes by
a.
taking in ammonia through the gills and eliminating it from the kidneys.
b.
taking in water through the kidneys and eliminating ammonia from the gills.
c.
eliminating ammonia from the gills and from the kidneys.
d.
eliminating urine from the gills and ammonia from the kidneys.
 

 8. 
All fishes in the class Chondrichthyes are alike in the
a.
foods that they eat.
c.
shape of their bodies.
b.
size and form of their teeth.
d.
composition of their skeletons.
 

 9. 
Which feature distinguishes most fishes from most amphibians?
a.
a vertebral column
b.
scales
c.
breathing with gills during at least part of the life cycle
d.
living in water during at least part of the life cycle
 

 10. 
The dominance of amphibians during the Carboniferous Period ended because
a.
many of their habitats disappeared due to climate changes.
b.
swampy fern forests became more widespread.
c.
amphibians were never very numerous during that period.
d.
amphibians did not evolve from the first forms that climbed onto land.
 

 11. 
Which of the following is NOT an amphibian adaptation that provides support against the pull of gravity?
a.
strong bones in the limbs
b.
strong bones in the pelvic girdle
c.
a bony cage around the internal organs
d.
lungs for breathing air
 

 12. 
Which of the following structures are missing from many salamanders that live on land?
a.
lungs
c.
legs
b.
kidneys
d.
eyes
 

 13. 
Which of the following is NOT a characteristic of an amphibian’s circulatory system?
a.
two loops
b.
heart with three chambers
c.
right atrium and left atrium
d.
complete separation of oxygen-rich and oxygen-poor blood
 

 14. 
A frog’s tympanic membranes would be most useful for
a.
enabling the frog to jump long distances.
b.
filtering wastes from the frog’s blood.
c.
listening to the mating calls of other frogs.
d.
keeping the frog’s eyes from drying out on land.
 
 
nar001-1.jpg

Figure 30–1
 

 15. 
Amphibians like the one in Figure 30-1 are
a.
herbivores as larvae and carnivores as adults.
b.
carnivores as larvae and herbivores as adults.
c.
herbivores as larvae and adults.
d.
carnivores as larvae and adults.
 

Completion
Complete each statement.
amphibian       drying out        gills        right atrium       pharyngeal pouches
 

 16. 
In fishes and amphibians, gills develop from slits that form in the ______________________________.
 

 

 17. 
One basic characteristic of fishes is the presence of ____________________, which they use to obtain oxygen from water.
 

 

 18. 
If a vertebrate is aquatic as a larva and terrestrial as an adult, it is a(an) ____________________.
 

 

 19. 
One adaptation of amphibians for life on land is the presence of mucous glands in the skin, which can help protect amphibians from ____________________.
 

 

 20. 
In a frog’s heart, blood from the body enters the ____________________.
 

 



 
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