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Mature white pines intercept almost all the sunlight that [#permalink]
 22 Apr 2005, 06:57
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Mature white pines intercept almost all the sunlight that shines on them. They leave a deep litter that dries readily, and they grow to prodigious height so that, even when there are large gaps in a stand of such trees, little light reaches the forest floor. For this reason white pines cannot regenerate in their own shade. Thus, when in a dense forest a stand of trees consists of nothing but mature white pines, it is a fair bet that ____.
Which one of the following most logically concludes
the argument?
(A) the ages of the trees in the stand do not differ from each other by much more than the length of time it takes a white pine to grow to
maturity
(B) the land on which the stand is now growing had been cleared of all trees at the time when the first of the white pines started growing
(C) competition among the trees in the stand for
sunlight will soon result in some trees’ dying and the stand thus becoming thinner
(D) other species of trees will soon begin to colonize the stand, eventually replacing all of the white pines
(E) any differences in the heights of the trees in the stand are attributable solely to differences in the ages of the trees
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SVP
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I believe it is (A).
All the trees should take almost at the same time to reach maturity. Any difference cannot be greater because the younger tree wont reach maturity and would die.
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Senior Manager
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Yes A for the same reason as above.
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Manager
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A for me...
(A) the ages of the trees in the stand do not differ from each other by much more than the length of time it takes a white pine to grow to
maturity
-- The younger trees would not have reached maturity as nothing grows in the shades of the pine trees
(B) the land on which the stand is now growing had been cleared of all trees at the time when the first of the white pines started growing
--maybe/may not be. What if the trees died after the pines had matured..nothing grows under them.
(C) competition among the trees in the stand for
sunlight will soon result in some trees’ dying and the stand thus becoming thinner
--The forrest will still be dense as each tree will occupy it's own space to the max
(D) other species of trees will soon begin to colonize the stand, eventually replacing all of the white pines
--opposite to the fact stated in the passage
(E) any differences in the heights of the trees in the stand are attributable solely to differences in the ages of the trees
--irrelevant..as the trees have to be of the same age...
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Director
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Yes (A).
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Director
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Wow...a complete agreement on A! I am with the rest!
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SVP
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one more A.
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Intern
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A.
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VP
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anandnk wrote: I believe it is (A).
All the trees should take almost at the same time to reach maturity. Any difference cannot be greater because the younger tree wont reach maturity and would die.
Hi, anand, I would like to ask why choice A said the ages of the trees do not differ by much more than the length of time to grow to maturity for a white pine.
what is the purpose?
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