Evolution: Question Preview (ID: 20743)


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Which of the following is an example of natural selection?
a) An ant eater is unable to reach ants in a hole. After stretching for 1 hour, his tongue is now long enough to reach the ants. b) A moth is camouflaged against a tree and predators cannot see him. His camouflage coloring is passed down to his offspring. c) d)
Fitness is a measure of an individual’s ability to __________ and ___________.
a) Camouflage and hydrate b) Survive and reproduce c) Hunt and pillage d)
To ensure that a species survives, more offspring are born than an environment can support. This results in competition among individuals for resources.
a) Overpopulation b) Fitness c) Biotic d) Abiotic
Evolution is
a) The process of biological change which results in descendants being different from their ancestors. b) Change of organisms throughout their lifetimes. c) d)
Lamarck believed that
a) Organisms can change their traits during their lifetime....example: girafffes b) Organisms evolve over thousands of years..........example: humans c) d)
Tends to favor phenotypes at one extreme of the range of variation....Example: The Peppered Moths
a) Directional selection b) Disruptive selection c) Stabilizing selection d)
Oysters can be light, dark or intermediate. If oysters are light or dark they are more likely to get eaten by predators because they are more easily seen than the intermediate color. This causes the intermediate population to increase.
a) Directional selection b) Disruptive selection c) Stabilizing selection d)
Extreme values for a trait are favored over intermediate values.
a) Directional selection b) Disruptive selection c) Stabilizing selection d)
An example is human birth weight. Babies of low weight lose heat more quickly and get ill from diseases easily, babies of large weight are more difficult to deliver through the pelvis. Infants in the medium range tend to have an easier delivery.
a) Directional selection b) Disruptive selection c) Stabilizing selection d)
Name of the ship that took Darwin to the Galapagos Islands.
a) HMS Beagle b) USS Dallas c) The Tampa Bay Runner d)
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