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Australian researchers have discovered electroreceptors (sensory organ

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Senior Manager
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Re: Australian researchers have discovered electroreceptors (sensory organ  [#permalink]

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New post 24 Jul 2019, 07:34
5. The passage suggests that the researchers mentioned in the second paragraph who observed anteaters break into a nest of ants would most likely agree with which of the following statements?

(A) The event they observed provides conclusive evidence that anteaters use their electroreceptors to locate unseen prey.
(B) The event they observed was atypical and may not reflect the usual hunting practices of anteaters.
(C) It is likely that the anteaters located the ants’ nesting chambers without the assistance of electroreceptors.
(D) Anteaters possess a very simple sensory system for use in locating prey.
(E) The speed with which the anteaters located their prey is greater than what might be expected on the basis of chance alone.

GMATNinja carcass GMATNinjaTWO

Please help.

I can't see how it's E. I know why its not A but why E??????????????????????
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Australian researchers have discovered electroreceptors (sensory organ  [#permalink]

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New post 09 Sep 2019, 18:48
jennpt wrote:
Hi AG95,

You messaged me to ask about how to eliminate answer choice B on question 3. I'm posting my response here in case it can help others as well.

Answer choice B can't work because it says "a function identical to that of electroreceptors." Identical is an extreme word, so you should always be suspicious of it in any RC answer choice. You would need really extreme language in the passage to justify that answer. However, the passage doesn't say that they have the exact same function - it says that they can have some of the same function (responding to electrical stimuli) but that the tactile receptors are not nearly as precise as the electroreceptors. So we can't justify an answer that says they have identical function.

Hope that helps - please let me know.

Best, Jennifer


GMATNInja, please help
For Q3, still not able to understand how to eliminate B. In the function role we could think of understanding 1st paragraph with or without the tactile receptor. When both (snout & tactile ) are there, it simply answers the question that "Yes"there is an additional organ that responds to electronic stimuli. When tactile is not present, it means only "snout" organ responds to electronic stimuli.

Hence B makes sense...moreover identical, though literally means exact replica, can be also used in the sense of serving similar function(tho not exact)....Hence still don't think "identical" as a strong language.Please provide some color on the same

While I do agree with A as a potential choice but somehow this does not become too apparent. By responding to stimuli, understand that we won't be able to distinguish between snout's or tactile's response and hence it makes sense to eliminate an alternative explanation, however somehow B looks more appealing/tempting.

3. The author of the passage most probably discusses the function of tactile receptors (lines 7-11) [While it is true that tactile receptors, another kind of sensory organ on the anteater’s snout, can also respond to electrical stimuli, such receptors do so only in response to electrical field strengths about 1,000 times greater than those known to excite electroreceptors.] in order to

(A) eliminate an alternative explanation of anteaters’ response to electrical stimuli
(B) highlight a type of sensory organ that has a function identical to that of electroreceptors
GMAT Club Bot
Australian researchers have discovered electroreceptors (sensory organ   [#permalink] 09 Sep 2019, 18:48

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