WGU C190 Pre-Assessment exam EXAM, SOLUTIONS (MULTIPLE
C190 Pre-Assessment
CHOICES) (A+ GRADED 100% VERIFIED) LATEST VERSION 2025!!
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1. Which item would be classified as biotic? fungus
-light
-wind
-temperature
-fungus
2. Which item is an atom? nitrogen
-carbon dioxide
-nitrogen
-sucrose
-methane
3. Largemouth bass have recently been introduced into faster average swim speed
ponds that previously did not contain any large, preda-
tory 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
4. Western spadefoot toads breed and deposit their fer- Spadefoot toads would
tilized eggs in small, often short-lived ponds. The tad- likely evolve to have
poles grow in the ponds for a period of time before a higher percentage of
undergoing a metamorphosis into an adult frog. One toads become carnivo-
unusual characteristic of spadefoot tadpoles is the rous.
ability to change body form during development. Nor-
, C190 Pre-Assessment
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mally most tadpoles are herbivorous and feed on plant
material. However, when conditions in the ponds sug-
gest 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 ability is con-
sidered to be advantageous as it both reduces the
number of competitors 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 tem-
peratures?
-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 development.
-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.
5. Male peacocks compete with one another to mate sexual selection
female peacocks. Males with more colorful tail feath-
ers attract female mates at a higher rate than those
without. Therefore, male peacocks have colorful tail
feathers, whereas female peacocks do not.
, C190 Pre-Assessment
Study online at https://quizlet.com/_8hnygj
What is this an example of?
-sexual selection
-artificial selection
-gene flow
-genetic drift
6. A gardener maintains a species of rose that produce mutation
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
7. The cladogram below depicts relationships between jaw & lungs
organisms:
Which two characteristics are found in organism C?
Choose 2 answers.
-jaw
-fur
-dry skin
-lungs
C190 Pre-Assessment
CHOICES) (A+ GRADED 100% VERIFIED) LATEST VERSION 2025!!
Study online at https://quizlet.com/_8hnygj
1. Which item would be classified as biotic? fungus
-light
-wind
-temperature
-fungus
2. Which item is an atom? nitrogen
-carbon dioxide
-nitrogen
-sucrose
-methane
3. Largemouth bass have recently been introduced into faster average swim speed
ponds that previously did not contain any large, preda-
tory 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
4. Western spadefoot toads breed and deposit their fer- Spadefoot toads would
tilized eggs in small, often short-lived ponds. The tad- likely evolve to have
poles grow in the ponds for a period of time before a higher percentage of
undergoing a metamorphosis into an adult frog. One toads become carnivo-
unusual characteristic of spadefoot tadpoles is the rous.
ability to change body form during development. Nor-
, C190 Pre-Assessment
Study online at https://quizlet.com/_8hnygj
mally most tadpoles are herbivorous and feed on plant
material. However, when conditions in the ponds sug-
gest 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 ability is con-
sidered to be advantageous as it both reduces the
number of competitors 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 tem-
peratures?
-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 development.
-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.
5. Male peacocks compete with one another to mate sexual selection
female peacocks. Males with more colorful tail feath-
ers attract female mates at a higher rate than those
without. Therefore, male peacocks have colorful tail
feathers, whereas female peacocks do not.
, C190 Pre-Assessment
Study online at https://quizlet.com/_8hnygj
What is this an example of?
-sexual selection
-artificial selection
-gene flow
-genetic drift
6. A gardener maintains a species of rose that produce mutation
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
7. The cladogram below depicts relationships between jaw & lungs
organisms:
Which two characteristics are found in organism C?
Choose 2 answers.
-jaw
-fur
-dry skin
-lungs
