8·11–8·17 Through natural selection, populations of organisms...
Chapter
8. 8·11–8·17 Through natural selection, populations of organisms...
Show What You Know
Show What You Know - Self Quiz
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You must read each slide, and complete any questions on the slide, in sequence.
Instructions
Check your understanding of concepts from 8·11–8·17 Through natural selection, populations of organisms can become adapted to their environments by answering the following questions.
1.
1. An organism’s fitness is measured:
A.
B.
C.
D.
E.
Correct. (See section 8·11 Traits causing some individuals to have more offspring than others become more prevalent in the population.)
Incorrect. (See section 8·11 Traits causing some individuals to have more offspring than others become more prevalent in the population.)
2.
2. Adaptation:
A.
B.
C.
D.
E.
Correct. (See section 8·12 Organisms in a population can become better matched to their environment through natural selection.)
Incorrect. (See section 8·12 Organisms in a population can become better matched to their environment through natural selection.)
3.
3. Which of the organisms described below most likely has the lowest fitness?
A.
B.
C.
D.
E.
Correct. (See section 8·11 Traits causing some individuals to have more offspring than others become more prevalent in the population.)
Incorrect. (See section 8·11 Traits causing some individuals to have more offspring than others become more prevalent in the population.)
4.
4. The graph above shows data on the average beak size in finches (across multiple years). Based on this graph, what seems to happen as the climate gets drier?
A.
B.
C.
D.
E.
Correct. (See section 8·13 Natural selection does not lead to perfect organisms.)
Incorrect. (See section 8·13 Natural selection does not lead to perfect organisms.)
5.
5. Exceptionally large babies increase a mother’s mortality risk when giving birth and exceptionally small babies tend to die at birth or shortly afterward. For these reasons, birth weight in human babies is generally:
A.
B.
C.
D.
E.
Correct. (See section 8·15 Natural selection can change the traits in a population in several ways.)
Incorrect. (See section 8·15 Natural selection can change the traits in a population in several ways.)