Site MapHelpFeedbackPre-Test
Pre-Test
(See related pages)

1
Two groups of organisms belong to different species if
A)gene flow between the two groups is not possible, even in the absence of physical barriers.
B)physical barriers separate the two groups thereby preventing cross matings.
C)the two groups of organisms have a different physical appearance.
D)individuals from the two groups, when mated, produce hybrid offspring.
2
Which of the following is NOT necessary for speciation?
A)genetic isolation from other species
B)genetic variety within a species
C)hundreds of millions of years
D)reproduction
3
Two closely related organisms are not considered to be separate species unless
A)they look different.
B)they are reproductively isolated.
C)they are able to interbreed.
D)they are in different geographic parts of the world.
4
Hummingbirds and honeybees both make noise as they fly from flower to flower collecting nectar. This is an example of
A)adaptive radiation.
B)convergent evolution.
C)divergent evolution.
D)punctuated equilibrium.
5
Although several species of firefly may live in the same area, they do not interbreed. Each species of firefly has a unique flash that is used to signal potential mates of the same species. In fireflies, cross-species matings are prevented by
A)mechanical isolation.
B)ecological isolation.
C)seasonal isolation.
D)behavioral isolation.
6
The Darwin-Wallace theory of natural selection corresponds with
A)gradualism.
B)polyploidy.
C)punctuated equilibrium.
D)the inheritance of acquired characteristics.





To learn more about the book this website supports, please visit its Information Center.
Copyright (c)2012 McGraw-Hill Education .
Any use is subject to the Terms of Use and Privacy Notice | Report Piracy


Concepts in Biology Online Learning Center

Home > Chapter 14 > Pre-Test