INTRODUCTION TO BIOLOGY - WGU C190 PRE-ASSESSMENT QUESTIONS
AND CORRECT ANSWERS (VERIFIED) | LATEST UPDATE 2026/2027 |
GRADED A+ | BRAND NEW | 100% GUARANTEED PASS
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
,-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
-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
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 - ANSWER-point E
The cladogram below depicts the relationships between organisms:
Which organism has neither bones nor a jaw?
-shark
-lamprey
AND CORRECT ANSWERS (VERIFIED) | LATEST UPDATE 2026/2027 |
GRADED A+ | BRAND NEW | 100% GUARANTEED PASS
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
,-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
-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
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 - ANSWER-point E
The cladogram below depicts the relationships between organisms:
Which organism has neither bones nor a jaw?
-shark
-lamprey
