Evolution And Genetic Variation Question Preview (ID: 60666)
8.L.4.
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Which of the following BEST describes natural selection?
a) Organisms compete for food and shelter
b) Organisms produce more offspring than can survive
c) Organisms vary in their physical traits, and some traits are inherited.
d) Organisms best suited to their environment are most likely to survive and reproduce.
Which of the following is a behavioral adaptation?
a) Swallows building nests out of mud
b) Cactus plants having long spines
c) Insects looking like leaves to blend in with real leaves
d) Butterflies producing foul-tasting chemicals
Which of the following is MOST LIKELY to cause the extinction of a species?
a) Mutation
b) A changing environment
c) Natural selection
d) Genetic variation
Which of the following would NOT be used by a scientist to determine the evolutionary relationship between two species?
a) Bone structure
b) Fossils
c) DNA
d) Population size
Which of these are vestigial structures?
a) The wings of a butterfly
b) The hip bones found in some species of snake
c) The thick fur and layer of fat of some mammals in cold climates
d) The sharp thorns of a cactus.
Which of these is LEAST likely to show common ancestry?
a) Homologous Structures
b) Vestigial Structures
c) DNA
d) Analogous Structures
Which of the following would be an adaptation for survival in the dessert.
a) An animal being active during the middle of the day.
b) A bird having dark feathers that absorb sunlight and heat.
c) A plant having a thick stem to store water.
d) A plant having large leaves to gather sunlight.
What is the most likely to happen if an environment changes and a species does not have variations that are helpful in the new conditions?
a) Members of the species will try to change the environment
b) Members of the species will develop new adaptations
c) A new species will form from the existing species
d) The species will become extinct.
Which of the following best describes an adaption?
a) A trait that helps an organism survive.
b) Any change in a gene or chromosome.
c) Any trait of an organism
d) A trait that is passed from a parent to its offspring.
Which of the following is NOT a type of adaptation?
a) Physiological
b) Behavioral
c) Structural
d) Psychological
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