## Spear Grass

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by mundasingh123 » Thu Mar 10, 2011 2:52 am
lunarpower wrote:i can definitely see substantial justification for both choice (b) and choice (e).

* as for choice (b), if the livestock animals don't eat the spear thistle, then there's a greater chance that the farmers will actually be able to see it on their farms (so that they can positively identify it with the pictures in the government brochure).

* as for choice (e), if timothy grass is plentiful on the farms, then it should be easier for the farmers to detect the spread of spear thistle, because timothy grass is the primary casualty of spear thistle's parasitism.

since this isn't an official problem, i don't think it's terribly worth worrying about -- you've basically got a choice between two correct answers here. on the official problems, you would not have to deal with such a thing.
Hi Ron
Thanks for intervening .As you have stated in the next post in this thread how outside assumptions can be brought in to strengthen/weaken a conclusion.
Then C can also be a feasible strengthener . If spear grass can cause holes in timothy grass , would nt farmers find it easy to identify the outgrowth of spear grass.Basicall the same reasoning that is involved in C can be applied here.

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by kevincanspain » Thu Mar 10, 2011 3:03 pm
The Eurasian ruffe, a fish species inadvertently introduced into North America's Great
Lakes in recent years, feeds on the eggs of lake whitefish, a native species, thus
threatening the lakes' natural ecosystem. To help track the ruffe's spread, government
agencies have produced wallet-sized cards about the ruffe. The cards contain pictures of
the ruffe and explain the danger they pose; the cards also request anglers to report any
ruffe they catch.
Which of the following, if true, would provide most support for the prediction that the
agencies' action will have its intended effect?
A. The ruffe has spiny fins that make it unattractive as prey.
B. Ruffe generally feed at night, but most recreational fishing on the Great Lakes is
done during daytime hours.
C. Most people who fish recreationally on the Great Lakes are interested in the
preservation of the lake whitefish because it is a highly prized game fish.
D. The ruffe is one of several nonnative species in the Great Lakes whose existence
threatens the survival of lake whitefish populations there.
E. The bait that most people use when fishing for whitefish on the Great Lakes is not
attractive to ruffe.

Here's the official question on which the question under discussion is based. As you can see, there is only one correct answer. Good verbal questions are hard to write, so it's tempting for some companies to rewrite official ones. The trouble is that many times, the modified versions are flawed and could thus do more harm than good.
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by yellowho » Thu Mar 10, 2011 3:32 pm
Thanks for re-assurance people. This is a Knewton CAT question, the free one. I guess you get what you pay for.

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by lunarpower » Sat Mar 12, 2011 2:52 am
@kevin
kevincanspain wrote: Good verbal questions are hard to write, so it's tempting for some companies to rewrite official ones. The trouble is that many times, the modified versions are flawed and could thus do more harm than good.
heh.
if these guys can't even write a decent question when they're basically stealing an official question, then one should entertain serious doubts about the quality of any non-stolen questions they might try to write...
Ron has been teaching various standardized tests for 20 years.

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by atulmangal » Sat Mar 12, 2011 7:28 am
A similar question is there in OG 12 Q--32
sorry as i do not have the soft copy of OG 12 so can not post the question

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by lunarpower » Sat Mar 12, 2011 8:14 am
atulmangal wrote:A similar question is there in OG 12 Q--32
sorry as i do not have the soft copy of OG 12 so can not post the question
Ron has been teaching various standardized tests for 20 years.

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by atulmangal » Sat Mar 12, 2011 9:27 am
lunarpower wrote:
atulmangal wrote:A similar question is there in OG 12 Q--32
sorry as i do not have the soft copy of OG 12 so can not post the question
Ohh..m extremely sorry.....

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by ranjeet75 » Fri Oct 21, 2011 3:46 am
[quote="czarczar"][quote="mundasingh123"]We are trying to strengthen the conclusion that the government will be successfully able to track the growth of Spear Thistle by providing photos of the Spear thistle to farmers and explaining to them the adverse effect on the soil that the Spear Thistle has.
C also helps the farmers to identify the growth of spear thistle because it creates holes in Timothy grass where it grows.

Why not C ?
Doesnt E involve the use of Outside information that farmers need to have their interests vested in the task of identify Spear Thistle and reporting its outgrowth on their Lands. If the farmers have nothing to gain from this Exercise of Tracking the progress of Spear THistle, they will not help the Govt.[/quote]

which can create , I guess what you read is which will create.[/quote]

C The spear thistle leaves spiny thorns on the ground which can poke holes in timothy grass.

They leave spiny thorns on the grass and they can be tracked.