Name
Date
Period
The image illustrates what evolutionary concept?
A. embryological similarities
B. variation among species
C. vestigial structures
D. homologous structures
A structure that seems to serve no purpose in an organism is called:
A. homologous
B. vestigial
C. dichotomous
D. fossilized
Any variation that can help an organism survive in its environment is
called a(n):
A. adaptation
B. characteristic
C. competition
D. vestigial structure
The strongest evidence for change over a long period of time comes from:
A. DNA
B. fossils
C. embryo studies
D. direct observation of living species
The nches on the Galapagos island were similar in form
except for variations of their beaks. Darwin observed that these
variations were useful for:
In science, theories are:
A. attracting a mate
B. a known fact
B. defending territory
C. absolute and unchangeable
C. building nests
D. the best explanation for a set of data or
observations
D. gathering food
The fossil record shows that
A.
B.
C.
D.
Most species have not evolved
some species are evolutionary transitions
between major groups of organisms
All species are today as they were when they
were created
fi
fi
fi
fi
Organisms with the most bene cial traits will
survive and reproduce. This is commonly known
as
A. DNA
B. Variations
C. Fitness
D. Ecosystems
A. an educated guess
Genetic diversity decreases and individuals at the center of
the curve have higher tness. Which one ?
A.
B.
C.
D.
Disruptive selection
Directional selection
Stabilizing selection
Arti cial selection
Which of the three graphs shows disruptive
selection? The original population is shown with a
solid line
A
B
C