Q14 - A commercial insect trap consists

[cyruswhittaker]

For question 14, my reasoning was that choice A, if true, provides a different explanation to why the traps have been less effective than what the scientists have hypothesized. Whereas the scientists attributed the decrease to a resistance to the pesticide, choice A attributes it to the pests having an increased aversion to to eating the glucose that is mixed in with the pesticide. Is this reasoning correct?

Can you also explain the reasoning behind #19 and #24?

Thanks!

[bbirdwell]

For question 14, my reasoning was that choice A, if true, provides a different explanation to why the traps have been less effective than what the scientists have hypothesized. Whereas the scientists attributed the decrease to a resistance to the pesticide, choice A attributes it to the pests having an increased aversion to to eating the glucose that is mixed in with the pesticide. Is this reasoning correct?

Can you also explain the reasoning behind #19 and #24?

Thanks!

I've started separate threads for 19 and 24. Also, please follow the naming convention I've used above for the title (PTxx, Sx, Qx; blablablabla). Thanks!

Now, for #14.

Yes! That's absolutely correct!

[jackie8848]

Could you elaborate why (D) is incorrect? Thanks.

[timmydoeslsat]

We are told about insect traps that have been placed in homes for many years. The insect traps that were placed in earlier in the home were more effective in eliminating insects than were the same traps placed later in the same home.

We know two things about these traps: contain a pesticide and glucose, a sweet substance.

The author concludes that it is the insects' developed resistance to the pesticide that is causing this ineffectiveness.

To weaken this argument, we want something that shows how the pesticide isnt the issue in causing this downfall.

(A) This points to the glucose being the issue. The glucose is the substance being resisted. The insects are not consuming the pesticide like they used to due to the lack of attraction to glucose.

With (D), this simply gives us something we would expect with pesticide resistance. This will not weaken the idea that pesticide resistance is causing the loss of effectiveness.

[patrice.antoine]

I have a different perspective on why (D) is wrong.

It is essentially saying that this increase in concentration proved to be NO MORE EFFECTIVE than the original traps. Which is to say, the new traps had the same effect as the original traps. This still doesn't provide an alternative explanation as to why these traps proved to be LESS effective than traps that were installed years ago.