Parasitic wasps lay their eggs directly into the eggs of : GMAT Critical Reasoning (CR)
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# Parasitic wasps lay their eggs directly into the eggs of

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Manager
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Parasitic wasps lay their eggs directly into the eggs of [#permalink]

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14 Mar 2006, 19:48
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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 be determined from the waspâ€™s egg-laying behavior.
(B) Host insects lack any effective defenses against the form of predation practiced by parasitic wasps.
(C) Parasitic wasps learn from experience how many eggs to lay into the eggs of different host species.
(D) Failure to lay enough eggs would lead to the death of the developing wasp larvae more quickly 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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14 Mar 2006, 19:59
B is the only one that makes sense here. The rest would require too mcuh inference
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14 Mar 2006, 20:15
"A" by POE
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14 Mar 2006, 23:14
(A) Can't tell from the passage
(B) Best choice. It appears the larvae will only die when the wasp makes a wrong decision when it is laying eggs. We can conclude that as long as the right amont of eggs are laid, the host larvae will have no chance
(C) Can't draw from the passage
(D) Can't draw from the passage
(E) Can't tell from the passage

B for me.
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15 Mar 2006, 00:09
I choose A

Not B because it assumes something outside the argument....
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15 Mar 2006, 03:45
B uses extreme language and reads more like an assumption.

(A) over C because it is directly supported in the passage.
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15 Mar 2006, 08:33
A) The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the waspâ€™s egg-laying behavior.

(B) Host insects lack any effective defenses against the form of predation practiced by parasitic wasps.

Between A and B, Ill go for A.

B talks Host's defence system, which is not mentioned in the argument. To make it conclusion we have to consider one more assumption.

A is true becuse we can determine from wasp's egg laying behaviour that wheter host's egg is small or big or exact size
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15 Mar 2006, 09:43
Agree with 'A'.
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15 Mar 2006, 12:46
^ A ^

C, D and E are immediately out.

B) Host insects lack any effective defenses against the form of predation practiced by parasitic wasps. ---> There is nothing we can extract from the argument that the host insects need protection against parasitic wasp predation. So this is out of subject.
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15 Mar 2006, 19:08
OA is A
Thanks Guys !!!
15 Mar 2006, 19:08
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