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Senior Manager
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Some flowering plant species, entirely dependent on bees for [#permalink]
 13 Sep 2006, 10:25
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Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed fromand thus pollinateonly a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinatean arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.
The information above, if true, most strongly supports which one of the following?
A. The earliest species of flowering plants appeared on Earth contemporaneously with the earliest bee species.
B. If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct.
C. Some bees are able to gather pollen and nectar from any species of plant.
D. The blossoms of most species of flowering plants attract some species of bees and do not attract others.
E. The total destruction of the habitat of some plant species could cause some bee species to become extinct.
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Director
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E?
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Senior Manager
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tough question.....I like both D and E, but i'll go with D.
"Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed fromand thus pollinateonly a single species of plant."
This piece tells me that D is the most logical choice.
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Senior Manager
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Looks like its (E)
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VP
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E. The total destruction of the habitat of some plant species could cause some bee species to become extinct.
Conclusion:
Bees if and only if Plants
E says Plants if & only if Bees.
Answer: E
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VP
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One more for E.
Passage says:
Often the pollinating species is so highly adapted that it can feed from and thus pollinateonly a single species of plant.
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Director
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if bees survive (A) then plants survive (B).
If A then B.
therefore If not B then Not A is also true.
If no plants then no bees.
(E)
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Senior Manager
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E
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VP
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mailtheguru,
Can you please post the OA &/or OE?
Thanks/
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Intern
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Why is it not B? That is what the whole passage talks about right? If the bees exist (the pollinator) then specific plants exist...
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Manager
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(E) for me...
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VP
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E too.
it is between B and E.
but the last sentence of the stimulus means that if bees are extinct, then the plant will also become extinct. but B talks about if been are in no danger, then the plant is also in no danger. They are not equivalent.
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Intern
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I vote for E.
follows the logic if x then y; if y then may or may not be x
so if bees become extinct, then plants become extinct; but if plants become extinct, the bees may or may not become extinct.
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Senior Manager
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I also thought it was B at first but E makes the most sense
E says
"The total destruction of the habitat of some plant species could cause some bee species to become extinct."
Bees will become extinct as there are no plant and hence no more food. As the passage says
"Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees."
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