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C190 Introduction to Biology Pre-Assessment WGU Exam Questions and Complete Solutions Graded
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C190 Introduction to Biology Pre-Assessment WGU Exam Questions and Complete Solutions Graded
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C190 Introduction toBiology Pre-Assessment
WGU Exam Questions
and Complete Solutions
Graded A+
Denning [Date] [Course title]
, Which two characteristics are found in organism C? Choose two answers. - Answer: Jaw and Lungs
Where is the ancestor of wolves and gorillas, but not frogs, depicted on this cladogram? - Answer: Point
E
Which organism has neither bones nor a jaw? - Answer: Lamprey
Which two organisms have eggs with shells? - Answer: Birds ; Crocodilians
Which organisms have four limbs and produce amniotic eggs without shells? - Answer: Rodents and
rabbits; Primates
Which species on the following cladogram has the most similar DNA sequence to species E? - Answer: D
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? - 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 habitats - 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? - Answer: Sexual
selection
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