LSAT 141 – Section 4 – Question 05

LSAT 141 - Section 4 - Question 05

September 2014

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT141 S4 Q05
+LR
Main conclusion or main point +MC
Conditional Reasoning +CondR
A
93%
163
B
2%
153
C
1%
152
D
2%
151
E
1%
149
135
142
148
 +Medium 147.542 +SubsectionMedium

While biodiversity is indispensable to the survival of life on Earth, biodiversity does not require the survival of every currently existing species. For there to be life on Earth, various ecological niches must be filled; many niches, however, can be filled by more than one species.

Summarize Argument
The author argues that the survival of every currently existing species is not necessary for biodiversity. To support life, various ecological roles must be occupied, and many of these roles can be occupied by multiple species.

Identify Conclusion
The conclusion is that the survival of every species that exists today is not necessary for biodiversity: “biodiversity does not require the survival of every currently existing species.”

A
Biodiversity does not require that all existing species continue to exist.
This rephrases the conclusion.
B
There are various ecological niches that must be filled if there is to be life on Earth.
This is context. It provides background that is important for understanding the premise, which is that many of these niches can be filled by more than one species.
C
The survival of life on Earth depends upon biodiversity.
This is context. While important for understanding the overall argument, it is not the conclusion.
D
There are many ecological niches that can be filled by more than one species.
This is a premise. It provides support for why biodiversity does not require every currently existing species to survive.
E
The species most indispensable for biodiversity fill more than one ecological niche.
This is not an idea that is discussed in the stimulus.

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LSAT PrepTest 141 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Reading Comprehension

Section 4 - Logical Reasoning

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