WGU C190 Pre-Assessment exam 2023 with 100%
correct answers
Which item would be classified as biotic?
-light
-wind
-temperature
-fungus - ANSWER--fungus
Which item is an atom?
-carbon dioxide
-nitrogen
-sucrose
-methane - ANSWER--nitrogen
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
, WGU C190 Pre-Assessment exam 2023 with 100%
correct answers
-more time actively foraging for food each day - ANSWER--faster average swim
speed
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 tadpoles 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 ability is considered 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 habit - ANSWER--Spadefoot toads would likely evolve to have a
higher percentage of toads become carnivorous.
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
, WGU C190 Pre-Assessment exam 2023 with 100%
correct answers
-gene flow
-genetic drift - ANSWER--sexual selection
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 - ANSWER--mutation
The cladogram below depicts relationships between organisms:
Which two characteristics are found in organism C? Choose 2 answers.
-jaw
-fur
-dry skin
-lungs - ANSWER--jaw & lungs
correct answers
Which item would be classified as biotic?
-light
-wind
-temperature
-fungus - ANSWER--fungus
Which item is an atom?
-carbon dioxide
-nitrogen
-sucrose
-methane - ANSWER--nitrogen
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
, WGU C190 Pre-Assessment exam 2023 with 100%
correct answers
-more time actively foraging for food each day - ANSWER--faster average swim
speed
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 tadpoles 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 ability is considered 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 habit - ANSWER--Spadefoot toads would likely evolve to have a
higher percentage of toads become carnivorous.
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
, WGU C190 Pre-Assessment exam 2023 with 100%
correct answers
-gene flow
-genetic drift - ANSWER--sexual selection
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 - ANSWER--mutation
The cladogram below depicts relationships between organisms:
Which two characteristics are found in organism C? Choose 2 answers.
-jaw
-fur
-dry skin
-lungs - ANSWER--jaw & lungs
