LSAT 102 – Section 2 – Question 10

LSAT 102 - Section 2 - Question 10

June 1998

You need a full course to see this video. Enroll now and get started in less than a minute.

Request new explanation

Target time: 1:38

This is question data from the 7Sage LSAT Scorer. You can score your LSATs, track your results, and analyze your performance with pretty charts and vital statistics - all with a Free Account ← sign up in less than 10 seconds

Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT102 S2 Q10
+LR
Strengthen +Streng
A
1%
158
B
1%
153
C
1%
158
D
11%
164
E
86%
166
120
134
153
 +Easiest 148.204 +SubsectionMedium

Insects can see ultraviolet light and are known to identify important food sources and mating sites by sensing the characteristic patterns of ultraviolet light that these things reflect. Insects are also attracted to Glomosus spiderwebs, which reflect ultraviolet light. Thus, insects are probably attracted to these webs because of the specific patterns of ultraviolet light that these webs reflect.

A
When webs of many different species of spider were illuminated with a uniform source of white light containing an ultraviolet component, many of these webs did not reflect the ultraviolet light.
Irrelevant. The author never said that Glomosus spiderwebs are the only spiderwebs that reflect ultraviolet light.
B
When the silks of spiders that spin silk only for lining burrows and covering eggs were illuminated with white light containing an ultraviolet component, the silks of these spiders reflected ultraviolet light.
Like (A), this is irrelevant. We don’t care about other spiderwebs that reflect ultraviolet light.
C
When webs of the comparatively recently evolved common garden spider were illuminated with white light containing an ultraviolet component, only certain portions of these webs reflected ultraviolet light.
Irrelevant. We don’t care about other spiderwebs that reflect ultraviolet light.
D
When Drosophila fruit flies were placed before a Glomosus web and a synthetic web of similar pattern that also reflected ultraviolet light and both webs were illuminated with white light containing an ultraviolet component, many of the fruit flies flew to the Glomosus web.
The author argues that the specific patterns of ultraviolet light attract insects. This suggests something else about the Glomosus spiderwebs is actually what attracts them.
E
When Drosophila fruit flies were placed before two Glomosus webs, one illuminated with white light containing an ultraviolet component and one illuminated with white light without an ultraviolet component, the majority flew to the ultraviolet reflecting web.
Between the otherwise identical Glomosus spiderwebs, insects chose the one with ultraviolet reflections. This strengthens the idea that ultraviolet reflections, and not something else about the spiderwebs, are what attract insects.

Take PrepTest

Review Results

LSAT PrepTest 102 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

Get full LSAT course

Leave a Reply