PT153.S3.Q14 > Question

SECTION 1 · 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 Question 14

PASSAGE 3

Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21

PASSAGE 4

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

SECTION 2 · 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 3 · lr

SECTION 4 · rc

PASSAGE 1

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

PASSAGE 2

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 Question 21

PASSAGE 4

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

The biologists hypothesize that the spider population’s increase is a result of the introduction of the brown tree snake. This is based on the fact that the brown tree snake eliminated native bird species, and on the subsidiary conclusion that this loss of bird species caused the spider population to increase. This sub-conclusion is based on the fact that many birds prey on spiders and use spiderwebs to construct nests.

The author assumes that there’s no other explanation for the increase in spider population on Guam besides the decrease in bird species. The author also assumes that there was a decrease in overall bird population (as opposed to simply a decrease in the number of species, which doesn’t automatically indicate a decrease in population).

This strengthens by providing another causal mechanism that could show bird populations can affect spider populations. If birds and spiders compete for food, a decrease in birds would mean spiders have less competition for food. This could help spiders survive and thrive.

This has no clear impact on the hypothesis. So, we estimated the spider population increase based on an increase in the number of spiderwebs. Does the spider population have anything to do with a decline in birds? (B) is silent on this.

This doesn’t help connect the increase in spiders with the bird population decline. The issue is the cause of the spider population increase, not whether the spider population has increased. We already know Guam has more spiders than other nearby islands.

This undermines the argument by pointing out that overall number of birds might have increased even if the number of species has gone down.

This has nothing to do with whether the snakes caused the bird population to decline and whether the bird population decline caused an increase in spider population. We care about the effect of the snakes. Not how easy it is to remove the snakes.

PrepTest 153 - Section 3 - Question 14

Difficulty

Analysis

Answer Popularity

Question history

Confirm action