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U7L1
Theory of Evolution by
Natural Selection
1. What is natural selection?
A. the process by which individuals that
are better adapted to their
environment are more likely to
survive and reproduce
B. the process in which inherited traits
of a population change over many
generations
C. the process by which Charles Darwin
noted the differences in finches while
visiting the Galápagos Islands
D. the process by which humans breed a
species for certain traits
2. Which of the following is an example of a
species?
A. spotted owl
B. birds of prey
C. owls
D. birds
3. Which of these statements best
describes what Charles Darwin observed
on the Galápagos Islands?
A. The finches on the islands ate seeds
and nuts but no insects.
B. The finch population on each island
was unique.
C. The finches on the islands were the
same as the finches in Ecuador.
D. The finches could produce offspring
only with finches from other islands.
4. The table below shows characteristics of
three breeds of cattle.
Characteristic
Brahmin
cattle
English
shorthorn
cattle
Angus
cattle
Quality of beef
poor
good
good
Tolerance to
heat
good
poor
poor
Which of the following selective breeding
programs would most likely result in
cattle that are tolerant of heat and have
good-quality beef?
A. breeding Brahmin cattle with
Brahmin cattle
B. breeding Brahmin cattle with English
shorthorn cattle
C. breeding English shorthorn cattle
with Angus cattle
D. breeding English shorthorn cattle
with English shorthorn cattle
5. What is evolution?
A. a group of organisms that can mate to
produce fertile offspring
B. the process by which individuals that
are better adapted to their
environment are more likely to
survive and reproduce
C. the process in which inherited traits
of a population change over many
generations
D. a trait that allows organisms in a
population to better survive and
reproduce in their environment
U7L2
Evidence of Evolution
1. Which of these descriptions is an
example of an unused body structure?
4. Which of these answers best describes
the relationship between a human’s
forearm and a bat’s wing?
A. similar physical structures with
similar functions
A. a bat’s wing that enables it to fly
B. different physical structures with
similar functions
B. the front legs of a dog that supports
its weight as it walks and runs
C. similar physical structures with
different functions
C. the tiny leg bones found in snakes
that have no legs
D. different physical structures with
different functions
D. the tentacles of an octopus that aid it
in movement and catching prey
2. In order for a fossil to form, what
substance may seep into an organism’s
remains and replace its hard parts?
A. air
B. minerals
C. DNA
D. water
3. Which of these answers correctly pairs a
scientific discovery with the type of
evidence for evolution that it
represents?
A. DNA comparison, embryological
evidence
B. unused hind limbs, structural
evidence
C. fossilized bones, genetic evidence
D. developmental patterns, fossil
evidence
5. A scientist described two modern-day
species as sharing a common ancestor.
What does it mean when two species
share a common ancestor?
A. It means that the two species are
actually the same species.
B. It means that both species evolved
from one species that lived in the
past.
C. It means that one of the species
evolved from other species.
D. It means that the two species share all
the same traits.