Parasitic wasps

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Parasitic wasps

by venmic » Sun Nov 13, 2011 11:00 pm
175. 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
wasp'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.


Can anyon please explain this argument and how to tackle it
Source: — Critical Reasoning |

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by sam2304 » Mon Nov 14, 2011 12:54 am
For conclusion questions the answer choices should be within the scope of the argument or a restatement of the argument.

Arg - wasps lay eggs in hosts in right numbers for any size. Too many eggs or too few eggs would kill the larvae.

B - Irrelevant - speaks about host insects' prevention against wasps.
C - There is no information given on how they learn that behavior.
D - No information is given about this.
E - No information on how they calculate the size is given

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by HSPA » Mon Nov 14, 2011 1:21 am
IMO D..
In A "egg laying behaviour ".. I do not understand this.

Expecting such technical para's to carry some easy language.. havent even understood option A.

D,A are open for me.
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by tuanquang269 » Mon Nov 14, 2011 1:50 am
Find the scope of argument:
- Egg laying habit (number of egg)
- Size of host egg
- Reason why the number of egg is important

(A) The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the wasp's egg-laying behavior. =>> Size host, behavior, in scope
(B) Host insects lack any effective defenses against the form of predation practiced by parasitic wasps. => Not in scope
(C) Parasitic wasps learn from experience how many eggs to lay into the eggs of different host species. => not in scope
(D) Failure to lay enough eggs would lead to the death of the developing wasp larvae more quickly than would laying too many eggs. => The speed of larvae death, not in scope
(E) Parasitic wasps use visual clues to calculate the size of a host egg. => the way to calculate, not in scope.

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by StoneBlack » Mon Nov 14, 2011 3:39 am
IMO C?