PT154.S4.Q12 > Question

SECTION 1 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25 Question 26

SECTION 2 · lr

SECTION 3 · rc

PASSAGE 1

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

PASSAGE 2

Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13

PASSAGE 3

Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20

PASSAGE 4

Question 21 Question 22 Question 23 Question 24 Question 25 Question 26 Question 27

SECTION 4 · lr

A photosynthetic organism and a fungus growing symbiotically make up a lichen. Lichens absorb minerals from the air, rainwater, and the surfaces they grow on. Lichens cannot excrete elements they absorb.

Some types of lichen are vulnerable to toxic compounds, including toxins found in polluted air. These compounds can damage both the photosynthetic organism and the fungus that make up a lichen.

Air pollution can have adverse affects on lichens growing in the area.

This answer is unsupported. We don’t know whether excreting toxic compounds would eliminate the harm these compounds can do to lichens.

This answer is unsupported. The stimulus only says that "some" lichens are vulnerable to poor air quality, so it's possible that non-vulnerable lichens could return to an area where air quality has not improved.

This answer is unsupported. There could be other variables besides air pollution that could affect the population of lichens. We cannot say if air pollution is the only factor that would eliminate lichens.

This answer is unsupported. We only know from the stimulus how these organisms function symbiotically with each other.

This answer is strongly supported. If toxic compounds found in polluted air can harm either or both of the symbiotic partners, then these compounds can have adverse effects for lichens.

PrepTest 154 - Section 4 - Question 12

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