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13 Aug 2017, 10:26
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Difficulty:
45%
(medium)
Question Stats:
65% (02:13) correct
35%
(02:28)
wrong
based on 84
sessions
History
Date
Time
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Not Attempted Yet
Although dried roots in well-watered orchids are caused primarily by the deficiency of a chemical compound called Vitadex, researchers believe that the presence of Ditalex in the soil could also be a cause of the same. Traces of Ditalex were found in 70 percent of the orchids with dried roots, but in only 10 percent of the orchids without dried roots. Ditalex was accidentally added to a few pesticides last year and researchers hypothesize that these affected orchids are from farms that once used this particular batch of pesticides.
Which of the following, if true, most strongly supports the researchers’ hypothesis?
A) Regulations in the pesticides manufacturing industry have now banned the usage of Ditalex.
B)Recently tested samples of the pesticides used last year have revealed traces of Ditalex.
C)On farms where the infected pesticide was never used, the samples of orchids that had dried roots did not contain Ditalex.
D)In some cases, orchids exposed to Ditalex are not affected by dried roots.
E)There is no direct proof that dried roots are primarily caused by Vitadex.
Which of the following, if true, most strongly supports the researchers’ hypothesis?
A) Regulations in the pesticides manufacturing industry have now banned the usage of Ditalex.
B)Recently tested samples of the pesticides used last year have revealed traces of Ditalex.
C)On farms where the infected pesticide was never used, the samples of orchids that had dried roots did not contain Ditalex.
D)In some cases, orchids exposed to Ditalex are not affected by dried roots.
E)There is no direct proof that dried roots are primarily caused by Vitadex.
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13 Aug 2017, 12:14
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13 Aug 2017, 13:00
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