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08 Jul 2020, 12:30
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
81% (01:58) correct
19%
(02:07)
wrong
based on 519
sessions
History
Date
Time
Result
Not Attempted Yet
Astragalus linifolius, a rare plant species that is found only in the Colorado region of the United States, reproduces when a pollinating agent like a fly or a bee carries the pollen grain from the male part of one plant to the female part of another plant of the same species. To maintain the population of this species, the use of pesticides that control grasshoppers should be banned in this region. These pesticides also often result in significant mortality among the Bombylius flies that are the most important pollinating agents of A. linifolius.
Which one of the following, if true, most strengthens the argument?
A: A. linifolius has a short life-span.
B: A. linifolius is also pollinated, though to a much-lesser degree, by some local species of bees.
C: The pesticides that control insect herbivores other than grasshoppers are even more toxic to Bombylius flies.
D: Bombylius flies do not reproduce very fast and their populations do not recover for many years after one spraying of a pesticide that controls grasshoppers.
E: The populations of some other plant species in the Colorado region have decreased to an even greater extent than the population of A. linifolius since the spraying of pesticides that control grasshoppers first started in the region.
Which one of the following, if true, most strengthens the argument?
A: A. linifolius has a short life-span.
B: A. linifolius is also pollinated, though to a much-lesser degree, by some local species of bees.
C: The pesticides that control insect herbivores other than grasshoppers are even more toxic to Bombylius flies.
D: Bombylius flies do not reproduce very fast and their populations do not recover for many years after one spraying of a pesticide that controls grasshoppers.
E: The populations of some other plant species in the Colorado region have decreased to an even greater extent than the population of A. linifolius since the spraying of pesticides that control grasshoppers first started in the region.
09 Jul 2020, 08:39
Kudos
Bookmarks
Hi
Clearly the negation of option D breaks down the argument and hence is the correct answer. E misleads by stating the situation another species of plant but the focus is on the rare species A. linifolius.
Clearly the negation of option D breaks down the argument and hence is the correct answer. E misleads by stating the situation another species of plant but the focus is on the rare species A. linifolius.
16 Jul 2020, 02:07
Kudos
Bookmarks
A: A. linifolius has a short life-span. out of scope, not talking about the life-span but reproduction
B: A. linifolius is also pollinated, though to a much-lesser degree, by some local species of bees. doesn't strengthen the idea that the pesticide should be banned
C: The pesticides that control insect herbivores other than grasshoppers are even more toxic to Bombylius flies. irrelevant not talking about the pesticides that control insect herbivores
D: Bombylius flies do not reproduce very fast and their populations do not recover for many years after one spraying of a pesticide that controls grasshoppers. CORRECT if the Bombylius flies do not reproduce very fast then it will be difficult for the A.Linifolius plant to reproduce as well, thus decreasing the population sharply.
E: The populations of some other plant species in the Colorado region have decreased to an even greater extent than the population of A. linifolius since the spraying of pesticides that control grasshoppers first started in the region.
out of scope, the population of the other plant doesn't affect the population of this A.linifolius plant
B: A. linifolius is also pollinated, though to a much-lesser degree, by some local species of bees. doesn't strengthen the idea that the pesticide should be banned
C: The pesticides that control insect herbivores other than grasshoppers are even more toxic to Bombylius flies. irrelevant not talking about the pesticides that control insect herbivores
D: Bombylius flies do not reproduce very fast and their populations do not recover for many years after one spraying of a pesticide that controls grasshoppers. CORRECT if the Bombylius flies do not reproduce very fast then it will be difficult for the A.Linifolius plant to reproduce as well, thus decreasing the population sharply.
E: The populations of some other plant species in the Colorado region have decreased to an even greater extent than the population of A. linifolius since the spraying of pesticides that control grasshoppers first started in the region.
out of scope, the population of the other plant doesn't affect the population of this A.linifolius plant
