Name: 
 

Biodiversity & Classification




Multiple Choice

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

 1. 


Oak trees are native to temperate climates and have leaves.  Cacti are native to desert climates and have modified leaves called spines.
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How are the spines on a cactus different from the leaves on an oak tree?
a.
They reduce water loss.
c.
They provide heat exchange.
b.
They reduce oxygen release.
d.
They provide nutrient intake.
 

 2. 


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a.
Different flower characteristics increase competition of pollination with other plant species.
c.
Different flower characteristics reduce the chance of pollination by disease-carrying organisms.
b.
Different flower characteristics reduce the risk of cross pollination with other plant species.
d.
Different flower characteristics increase the chance of pollination by different means in the environment.
 

 3. 

Many different factors influence the rate of evolution.  The table lists several factors affecting four populations.
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Which population most likely experiences the fastest rate of evolution?
a.
Population 1
c.
Population 3
b.
Population 2
d.
Population 4
 

 4. 


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How does the sequence of the amino acids show relatedness between organisms?

a.
A rabbit and a Rhesus monkey are more closely related than a dog and a chicken.
c.
A dog and a fish are more closely related than a dog is to a chicken.
b.
The fish are more closely related to a human than they are to a chicken.
d.
A chicken is more closely related to mammals than to a fish.
 

 5. 

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Which characteristic do domestic cats and lions share that separates them from the other animals?
a.
Hair and mammary Glands
c.
Retractable Claws
b.
Cheek Teeth for Eating Meat
d.
Ability to Purr
 

 6. 

A simplified evolutionary path of the whale is shown.
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Which is the best evidence to support the relationship of the modern whale to the immediate ancestor in the evolutionary path?
a.
the presence of a tail in the ancestral whale
c.
The observation that both animals live in the water
b.
The observation that both animals have teeth
d.
The presence of rudimentary hip bones in the whale
 

 7. 

The diagram shows a phylogenetic tree for bacterial and archeal organisms.

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What can be inferred from the phylogenetic tree?

a.
Proteobacteria and Spirochetes are closely related.
c.
Planctomyces and Methanococcus lack a common ancestor.
b.
Cyanobacteria and Gram-Positive bacteria evolved at the same time.
d.
Thermatoga and Thermoproteus are older species than Aquifax.
 

 8. 

The table shows the classification of five different animals.

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Which organism is most closely related to the fox?
a.
Beaver
c.
Rabbit
b.
Otter
d.
Shrew
 

 9. 

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Which characteristic indicates that Western gray squirrels have access to a more nutritious food supply?
a.
Adult weight
c.
Weaning Time
b.
Gestation Period
d.
Litters per Year
 

 10. 

The porcupines and cacti have spines projecting from their bodies.
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What function do spines provide these organisms?
a.
Reduce water loss
c.
Enable predation
b.
Increase cooling
d.
Provide defense
 

 11. 

The fennec fox has large ear, thick sandy-colored fur, and lives in a desert environment.
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What purpose does having large ears and sandy-colored fur provide for the fox’s survival in the dessert?
a.
Both provide camouflage.
c.
Both reduce loss of energy.
b.
Both decrease water loss.
d.
Both aid in regulating body temperature.
 

 12. 

Galapagos finches live in many of the same areas on the Galapagos Islands but have different physical appearances.  What is the best explanation for this observation?
a.
A lack of environmental change.
c.
Random changes in the animals over time.
b.
Genetic variation in ancestors.
d.
Migration of animals into the environment.
 

 13. 


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a.
High migration rate
c.
High mutation rate
b.
Low energy demand
d.
Low biodiversity
 

 14. 


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Based on the arrangement of symbols, which two mammals are classified as least closely related?
a.
Hedgehog and Horse
c.
Mouse and Cow
b.
Dog and Horse
d.
Mouse and Dog
 

 15. 

The figure below shows alligator and mouse embryos sharing the similarity of limb bud development. 
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What evidence is supported by the alligator and mouse embryos sharing similarities during development?
a.
These organisms have a related ancestor.
c.
Development is unrelated to the physical features of an organism.
b.
Development of organisms is unique to each species.
d.
The female parent determines the physical features of the offspring.
 

 16. 

The table shows the classification of six different plants.

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Which two plants are most closely related?

a.
Plant 1 and Plant 6
c.
Plant 3 and Plant 4
b.
Plant 2 and Plant 5
d.
Plant 1 and Plant 4
 

 17. 

Scientists use DNA sequences to establish evolutionary relationships.  The table shows the DNA sequences from six organisms.  The sequences are from the same region in each organism’s DNA.
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Which two organisms have a DNA sequence that is most closely related?
a.
Organism 2 and Organism 6
c.
Organism 1 and Organism 4
b.
Organism 3 and Organism 5
d.
Organism 1 and Organism 5
 
 
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Figure 17–1
 

 18. 

One end of Figure 17–1 shows an increase in average beak size for a population of birds. When individuals at only one end of a bell curve of phenotype frequencies have high fitness, the result is
a.
directional selection.
b.
stabilizing selection.
c.
disruptive selection.
d.
genetic drift.
 
 
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Figure 17–2
 

 19. 

Figure 17–2 shows highest fitness toward the center of the curve. When individuals with an average form of a trait have the highest fitness, the result is
a.
not predictable.
b.
disruptive selection.
c.
directional selection.
d.
stabilizing selection.
 
 
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Figure 17–3
 

 20. 

Figure 17–3 shows smaller and larger beaks in a population of finches. One group of birds has a short, parrotlike beak and another group has a long, narrow beak. What process has probably occurred?
a.
directional selection
b.
disruptive selection
c.
stabilizing selection
d.
genetic drift
 



 
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