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Parasitic wasps lay their eggs directly into the eggs of [#permalink]
 30 Jan 2006, 20:36
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Parasitic wasps lay their eggs directly into the eggs of various host insects in exactly the
right numbers for any suitable size of host egg. If they laid too many eggs in a host egg, the
developing wasp larvae would compete with each other to the death for nutrients and
space. If too few eggs were laid, portions of the host egg would decay, killing the wasp
larvae.
Which of the following conclusions can properly be drawn from the information above?
A. The size of the smallest host egg that a wasp could theoretically parasitize can bedetermined from the wasps egg-laying behavior.
B. Host insects lack any effective defenses against the form of predation practiced byparasitic wasps.
C. Parasitic wasps learn from experience how many eggs to lay into the eggs of differenthost species.
D. Failure to lay enough eggs would lead to the death of the developing wasp larvae morequickly than would laying too many eggs.
E. Parasitic wasps use visual clues to calculate the size of a host egg.
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Manager
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My pick : A
A. The size of the smallest host egg that a wasp could theoretically parasitize can bedetermined from the wasps egg-laying behavior.
since the wasps somehow know how many eggs to lay in order for their larvae to survive, one can in theory compute the smallest size based on their egg-lay behavior ..
As you can see below - all the other choices can be eliminated with lot more certainity, leaving just "A"
B. Host insects lack any effective defenses against the form of predation practiced byparasitic wasps.
lack of effective defensive mechanism in the host - is out of scope
C. Parasitic wasps learn from experience how many eggs to lay into the eggs of differenthost species.
nothing in the argument talks about how the wasps know how many eggs to lay - hence out of scope
D. Failure to lay enough eggs would lead to the death of the developing wasp larvae morequickly than would laying too many eggs.
- the argument is not about which method will lead to the quicker end of the wasp larvae - so we cannot come to this conclusion that one method will lead to quick death than the other
E. Parasitic wasps use visual clues to calculate the size of a host egg.
- again, how the wasps know how many eggs to lay is out of scope
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Intern
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My pick here is (C)
Reason being that wasps know how many eggs to lay and that is a premise to the argument.
The "too many eggs....and too few eggs" is an assertion to this premise.
Hence conclusion should be about how warp knows how many eggs to lay.
between (C) and (E).
(E) sounded too specific and looking at (C) it somehow covers a broader range.
So my FA (C).
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Re: CR-Parasitic wasps [#permalink]
30 Jan 2006, 22:12
A
Premise: Parasitic wasps lay their eggs directly into the eggs of various host insects in exactly the right numbers for any suitable size of host egg
Thus A could be properly concluded from the premise
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Re: CR-Parasitic wasps [#permalink]
31 Jan 2006, 03:59
TeHCM wrote: A
Premise: Parasitic wasps lay their eggs directly into the eggs of various host insects in exactly the right numbers for any suitable size of host egg
Thus A could be properly concluded from the premise
TEHCM
when you are asked to supply a conclusion......is it true that the answer has to have all the evidence in it...or just 1 evidence is required ??? and u can call it a conclusion ???????
inshort conclusion is drawn keeping all the evidence in mind or just 1 ???
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Director
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IMO D) is correct
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Agree with A.
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5elements wrote: My pick : A
A. The size of the smallest host egg that a wasp could theoretically parasitize can bedetermined from the wasps egg-laying behavior.
since the wasps somehow know how many eggs to lay in order for their larvae to survive, one can in theory compute the smallest size based on their egg-lay behavior ..
As you can see below - all the other choices can be eliminated with lot more certainity, leaving just "A"
B. Host insects lack any effective defenses against the form of predation practiced byparasitic wasps.
lack of effective defensive mechanism in the host - is out of scope
OA is A ....
C. Parasitic wasps learn from experience how many eggs to lay into the eggs of differenthost species.
nothing in the argument talks about how the wasps know how many eggs to lay - hence out of scope
D. Failure to lay enough eggs would lead to the death of the developing wasp larvae morequickly than would laying too many eggs.
- the argument is not about which method will lead to the quicker end of the wasp larvae - so we cannot come to this conclusion that one method will lead to quick death than the other
E. Parasitic wasps use visual clues to calculate the size of a host egg.
- again, how the wasps know how many eggs to lay is out of scope
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I picked C !  guess it is A , understood y , thnks 5elements
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