Glencoe Biology

Section 1: Organisms and Their Relationships

Self-Check Quizzes-English

1
How do ecologists benefit from creating models?
A)Biotic factors can be ignored.
B)Random factors have a greater effect on results.
C)Abiotic factors can be ignored.
D)Variables can be more easily controlled.
2
Tree branches are an example of a ____.
A)niche
B)habitat
C)biome
D)mutualism
3
What does a decrease in salmon population due to an increase in river temperature indicate?
A)an abiotic factor affecting a biotic factor
B)change in population but not in abiotic factors
C)an effect of predation
D)an unchanging biological community
4
This graph shows that the growth of ____ is decreased by higher temperature.
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078695104/383926/ag.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (11.0K)</a>
A)paramecium
B)colpidium
C)colpidium and paramecium
D)neither organism
5
What significant function can parasitism have in the ecosystem?
A)the formation of lichens
B)benefiting the health of hosts
C)population decrease of an overabundant species
D)increasing habitat size
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