PT127.S3.Q13 > Question

SECTION 1 · lr

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SECTION 2 · lr

SECTION 3 · lr

SECTION 4 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7

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PASSAGE 3

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PASSAGE 4

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The author hypothesizes that tent caterpillars engage in communal foraging. This is because tent caterpillars mark their routes to food with pheromones, and moreover mark routes to food more heavily than routes that don’t lead to food.

The author assumes that tent caterpillars are attempting to convey information to one another by marking their trails, and that other caterpillars can pick up on such markings. If tent caterpillars don’t sense pheromones, then these trails would be useless.

In other words, tent caterpillars can indeed pick up on pheromones, and they understand what heavily marked trails signify. This confirms two of the author’s assumptions, strengthening the argument.

If tent caterpillars can’t detect the concentration of pheromones, then the author’s claim about heavily marked paths becomes unimportant. This weakens the argument.

This is irrelevant, because it doesn't confirm or deny the social role of the caterpillars' pheromone trails.

We still don’t know if tent caterpillars can sense pheromones, or whether pheromones are used for communication. Whether the pheromones are specific or not doesn't help us.

We need to know if tent caterpillars can detect pheromones themselves. It doesn't matter what other caterpillars can do unless that tells us more about tent caterpillars, which this doesn't.

PrepTest 127 - Section 3 - Question 13

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