Life Science 4.1 And 4.2 Question Preview (ID: 46688)


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Which of these groups contains single-celled organisms?
a) birds
b) plants
c) fungus
d) animals

What do scientists most often use to form the basis for biological classification?
a) dietary habits
b) population size
c) geographic location
d) comparative anatomy

Which is an example of comparative anatomy that supports the theory of evolution?
a) A mother killdeer flutters just out of reach of a predator.
b) In Florida, roaches began to ignore a formerly effective poison bait.
c) In the early stages of the embryo, fish, turtles, chickens, mice, and humans develop gill slits.
d)

Fossils of land-dwelling mammals found in both Australia and southern Asia were discovered to have body structures believed to have evolved from a common ancestor. What does this evidence most likely suggest?
a) These organisms were capable of swimming from one continent to the other.
b) Australia and Asia were once part of a larger continent.
c) These organisms developed during the same time period.
d)

Two organisms have homologous structures. Which can most likely be concluded about the two organisms?
a) They are unrelated.
b) They are the same organism.
c) They share a common ancestor.
d) They evolved in a similar environment.

Which best demonstrates analogous structures in animals?
a) cat fur and dog fur
b) whale fins and human arms
c) bird wings and insect wings
d) gills in fish and lungs in mammals

James is examining two different fossil specimens. The fossils of both organisms show wings with similar bone structure. Which conclusion can James most likely make?
a) The organisms are of different species.
b) The organisms are of the same species.
c) The wings allowed the organisms to fly long distances.
d) The wings served the same function in both organisms.

e
a) d
b) d
c)
d)

d
a) d
b) d
c)
d)

d
a) d
b) d
c)
d)

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