WGU C190 Pre-Assessment
1. Which item would be classified as biotic?
-light
-wind
-temperature
-fungus: fungus
2. Which item is an atom?
-carbon dioxide
-nitrogen
-sucrose
-methane: nitrogen
3. Largemouth bass have recently been introduced into ponds that previously did not contain any large,
predatory fish.
Which adaptation would help the existing population of small, prey species of fish avoid predation from the
largemouth bass?
-fins with smaller surface areas
-faster average swim speed
-more noticeable body coloration
-more time actively foraging for food each day: faster average swim speed
4. Western spadefoot toads breed and deposit their fertilized eggs in small, often short-lived ponds. The
tadpoles grow in the ponds for a period of time before undergoing a metamorphosis into an adult frog. One
unusual
characteristic of spadefoot tadpoles is the ability to change body form during development. Normally most tadpole
are herbivorous and feed on plant material. However, when conditions in the ponds suggest they are beginning to
dry up (e.g., an increase in water temperature or concentration of organic waste), a small percentage of individuals
in the population undergo a dramatic change in body form and habit and begin to eat their competitors. This abili
is considered to be advantageous as it both reduces the number of competi- tors in the pond and speeds up the rate
of development of the transformed tadpoles.
If global climate change continues (as predicted) to increase the average temperature of habitats around the world
how would populations of spadefoot toads likely evolve in response to an increase in pond temperatures?
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, WGU C190 Pre-Assessment
-Spadefoot toads would likely evolve to lay fewer eggs to try and offset the increase in the mortality rate.
-Spadefoot toads would likely evolve to increase the period of tadpole devel- opment.
-Spadefoot toads would likely evolve to have a higher percentage of tadpoles be herbivorous.
-Spadefoot toads would likely evolve to have a higher percentage of toads become carnivorous.: Spadefoot toads
would likely evolve to have a higher per- centage of toads become carnivorous.
5. Male peacocks compete with one another to mate female peacocks. Males with more colorful tail feathers
attract female mates at a higher rate than those without. Therefore, male peacocks have colorful tail feathers,
whereas female peacocks do not.
What is this an example of?
-sexual selection
-artificial selection
-gene flow
-genetic drift: sexual selection
6. A gardener maintains a species of rose that produce either yellow flowers (the dominant phenotype) or white
flowers (the recessive phenotype). One day, the gardener observes that a cross between two yellow rose bushes
has led to a single rose bush with orange flowers.
What evolutionary mechanism is involved in the change in the gene pool of this species?
-mutation
-gene flow
-genetic drift
-artificial selection: mutation
7. The cladogram below depicts relationships between organisms: Which two characteristics are found in
organism C? Choose 2 answers.
-jaw
-fur
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, WGU C190 Pre-Assessment
-dry skin
-lungs: jaw & lungs
8. The cladogram below depicts relationships between organisms:
Where is the ancestor of wolves and gorillas, but not frogs, depicted on this cladogram?
-point D
-point E
-between points E and F
-between points C and D: point E
9. The cladogram below depicts the relationships between organisms: Which organism has neither
bones nor a jaw?
-shark
-lamprey
-fish
-frog: lamprey
10.Refer to the following cladogram to answer the question.
Which two organisms have eggs with shells? Choose 2 answers
-crocodilians
-rodents
-birds
-amphibians
-primates: crocodilians & birds
11.Refer to the following cladogram to answer the question.
Which organisms have four limbs and produce amniotic eggs without shells? Choose 2 answers
-primates
-birds
-amphibians
-rodents and rabbits
-crocodilians: primates & rodents and rabbits
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1. Which item would be classified as biotic?
-light
-wind
-temperature
-fungus: fungus
2. Which item is an atom?
-carbon dioxide
-nitrogen
-sucrose
-methane: nitrogen
3. Largemouth bass have recently been introduced into ponds that previously did not contain any large,
predatory fish.
Which adaptation would help the existing population of small, prey species of fish avoid predation from the
largemouth bass?
-fins with smaller surface areas
-faster average swim speed
-more noticeable body coloration
-more time actively foraging for food each day: faster average swim speed
4. Western spadefoot toads breed and deposit their fertilized eggs in small, often short-lived ponds. The
tadpoles grow in the ponds for a period of time before undergoing a metamorphosis into an adult frog. One
unusual
characteristic of spadefoot tadpoles is the ability to change body form during development. Normally most tadpole
are herbivorous and feed on plant material. However, when conditions in the ponds suggest they are beginning to
dry up (e.g., an increase in water temperature or concentration of organic waste), a small percentage of individuals
in the population undergo a dramatic change in body form and habit and begin to eat their competitors. This abili
is considered to be advantageous as it both reduces the number of competi- tors in the pond and speeds up the rate
of development of the transformed tadpoles.
If global climate change continues (as predicted) to increase the average temperature of habitats around the world
how would populations of spadefoot toads likely evolve in response to an increase in pond temperatures?
1/
17
, WGU C190 Pre-Assessment
-Spadefoot toads would likely evolve to lay fewer eggs to try and offset the increase in the mortality rate.
-Spadefoot toads would likely evolve to increase the period of tadpole devel- opment.
-Spadefoot toads would likely evolve to have a higher percentage of tadpoles be herbivorous.
-Spadefoot toads would likely evolve to have a higher percentage of toads become carnivorous.: Spadefoot toads
would likely evolve to have a higher per- centage of toads become carnivorous.
5. Male peacocks compete with one another to mate female peacocks. Males with more colorful tail feathers
attract female mates at a higher rate than those without. Therefore, male peacocks have colorful tail feathers,
whereas female peacocks do not.
What is this an example of?
-sexual selection
-artificial selection
-gene flow
-genetic drift: sexual selection
6. A gardener maintains a species of rose that produce either yellow flowers (the dominant phenotype) or white
flowers (the recessive phenotype). One day, the gardener observes that a cross between two yellow rose bushes
has led to a single rose bush with orange flowers.
What evolutionary mechanism is involved in the change in the gene pool of this species?
-mutation
-gene flow
-genetic drift
-artificial selection: mutation
7. The cladogram below depicts relationships between organisms: Which two characteristics are found in
organism C? Choose 2 answers.
-jaw
-fur
2/
17
, WGU C190 Pre-Assessment
-dry skin
-lungs: jaw & lungs
8. The cladogram below depicts relationships between organisms:
Where is the ancestor of wolves and gorillas, but not frogs, depicted on this cladogram?
-point D
-point E
-between points E and F
-between points C and D: point E
9. The cladogram below depicts the relationships between organisms: Which organism has neither
bones nor a jaw?
-shark
-lamprey
-fish
-frog: lamprey
10.Refer to the following cladogram to answer the question.
Which two organisms have eggs with shells? Choose 2 answers
-crocodilians
-rodents
-birds
-amphibians
-primates: crocodilians & birds
11.Refer to the following cladogram to answer the question.
Which organisms have four limbs and produce amniotic eggs without shells? Choose 2 answers
-primates
-birds
-amphibians
-rodents and rabbits
-crocodilians: primates & rodents and rabbits
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