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10 Jul 2011, 13:13
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
60% (02:29) correct
40%
(02:24)
wrong
based on 803
sessions
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Not Attempted Yet
The forest ranger explained to the group on the ecology walk that the woods around them, dominated by beech and maple trees, were representative within that region of an ecological climax community. Before climax an area is in constant change as the initial simple vegetation, through the natural process of decay, enriches the soil, enabling it to sustain more complex plant and animal life. The sequence of development leading up to the climax community of beeches and maples starts with sand on which grasses grow, causing stability and eventual enrichment of the soil until conifers and then oaks grow, resulting finally in the ascendance of the present beeches and maples.
The forest ranger is assuming which one of the following?
A. No conifers or oaks are present in this particular climax community.
B. The evolution of a forest does not conform to typical growth patterns.
C. The animal life of an ecological community has no effect on soil enrichment.
D. Within the region, unenriched sand cannot sustain trees like beeches and maples.
E. After the climax of an ecological community, no further ecological change takes place
The forest ranger is assuming which one of the following?
A. No conifers or oaks are present in this particular climax community.
B. The evolution of a forest does not conform to typical growth patterns.
C. The animal life of an ecological community has no effect on soil enrichment.
D. Within the region, unenriched sand cannot sustain trees like beeches and maples.
E. After the climax of an ecological community, no further ecological change takes place
10 Jul 2011, 13:48
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D.
was confused between D and E. And did not choose E, because the passage does not give any information after the climax period. I am not sure if that is the probable reason of not choosing E.
was confused between D and E. And did not choose E, because the passage does not give any information after the climax period. I am not sure if that is the probable reason of not choosing E.
General Discussion
10 Jul 2011, 14:44
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Try negating E. Even if after the climax of an ecological community further ecological change continues, the sequence of vegetation is not impacted. ie. Sand --> oak --> beech will remain the same.
