Evolution Review Final Exam Question Preview (ID: 56229)
Review Of Evolution Unit Including Natural Selection, Isolation Types, Darwin, And Types Of Selection.
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The fossil record shows that the average size of black bears was large during cold glacial periods and got smaller during warmer time periods. What is this an example of?
a) directional selection
b) disruptive selection
c) ecosystem selection
d) stabilizing selection
Why do a chicken embryo and a cow embryo look very similar even though the adults do not?
a) They are not related, but still have similar development.
b) They are distantly related, so their development is similar.
c) The embryos mutate in utero to form different structures.
d) The genetic makeup of the two species changes during development.
Populations of organisms that exhibit a high degree of variation have a greater chance for survival than populations of organisms that show little variation. This statement is
a) always true.
b) usually true.
c) rarely true.
d) never true.
What hypothesis did Darwin investigate by studying the breeding of pigeons with distinctive traits?
a) New species can appear gradually through small changes in an ancestral species.
b) The amount of variation in a population is related to the type of environment it lives in.
c) Organisms have only the number of offspring that are supported by the environment.
d) Some traits appear in each generation, while others seem to disappear in some generations.
Darwin’s finches evolved on an island. What is the main reason that islands often provide good examples of evolution?
a) They have many niches.
b) They have many organisms that live on them.
c) They allow for automatic biogeographic isolation.
d) They allow for many variations to exist in species.
In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?
a) Trilobites existed before jellyfish and ammonites.
b) Jellyfish existed before trilobites and ammonites.
c) Ammonites existed before trilobites and jellyfish.
d) Jellyfish, trilobites, and ammonites lived together.
Which factors affect natural selection?
a) inheritance, isolation, adaptation
b) variation, overpopulation, adaptation
c) variation, inheritance, speciation
d) isolation, overpopulation, speciation
Carlos collects data about the length of earthworms in his backyard. The shortest worm he found is 4 inches long; the longest worm is 8 inches long. If most of the worms are either short or long, which type of distribution is shown in the population?
a) directional
b) disruptive
c) stabilizing
d) normalized
What is most likely to happen to a population of mice that becomes isolated on an island?
a) Many different species will form as they evolve and fill different niches on the island.
b) The population of mice will adapt to life on the island but will still be able to breed with the mainland population.
c) Many different species that are capable of breeding with each other will form.
d) The population will evolve into a new species that is adapted to all the different niches that are found on the island.
The wing of the bat and the fore-limb of the dog are said to be homologous structures. This indicates that
a) They have the same function
b) Bats evolved from a lineage of dogs
c) They are structures which are similar due to common ancestry
d) They have a different ancestry but a common function
Marine mammals have many structural characteristics in common with fishes. The explanation that evolutionary theory would give for this similarity is:
a) Fish and mammals are closely related
b) Fish evolved structures similar to those already existing in mammals
c) Marine mammals adapted to an environment similar to that of the fishes
d) Marine mammals evolved directly from the fishes
The population of Florida panthers has been drastically reduced by the actions of man. Which of the following most likely threatens their ability to continue to evolve in response to the pressures of their environment?
a) There is no longer the prospect of over-reproduction
b) There is no longer the prospect of a struggle for limited resources
c) There is a lack of genetic variation for selection to act upon
d) There is no longer the prospect of a trait conferring a reproductive advantage
A sudden major climatic change would most likely initially result in
a) A rapid increase in adaptive radiation
b) A rapid increase in extinction rates
c) A sharp increase in numbers of species
d) An increase in mutation rates
The extinct species Archaeopteryx had characteristics of both birds and reptiles. This is an example of a(n)
a) convergent species
b) trace fossil
c) archetype
d) intermediate form
Which of the following is not a part of Darwin's theory of natural selection?
a) Individuals of a population vary
b) Organisms tend to over-reproduce themselves
c) There are limited resources for which individuals compete
d) Modifications an organism acquires during its lifetime can be passed to its offspring
Features that increase the likelihood of survival and reproduction by an organism in a particular environment are called
a) genes
b) fitness.
c) mutations
d) adaptations
A structure that seems to serve no purpose in an organism is called:
a) homologous
b) vestigial
c) dichotomous
d) fossilized
A group of mice becomes separated by the formation of a river. Over time, the northern mice became smaller and whiter, while the southern mice became larger and browner. This is an example of
a) geographic isolation
b) behavioral isolation
c) mechanical isolation
d) temporal isolation
The dog breeds we have today were developed through:
a) natural selection
b) artificial selection
c) sexual selection
d) acquired selection
The finches on the Galapagos island were similar in form except for variations of their beaks. Darwin observed that these variations were useful for
a) attracting a mate
b) defending territory
c) building nests
d) gathering food
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