LSAT 147 – Section 4 – Question 23
LSAT 147 - Section 4 - Question 23
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| Question QuickView |
Type | Tags | Answer Choices |
Curve | Question Difficulty |
Psg/Game/S Difficulty |
Explanation |
|---|---|---|---|---|---|---|---|
| PT147 S4 Q23 |
+LR
| Inference +Inf Conditional Reasoning +CondR Quantifier +Quant | A
4%
157
B
79%
165
C
12%
157
D
2%
155
E
2%
155
|
147 153 160 |
+Harder | 146.282 +SubsectionMedium |
The diet of Heliothis subflexa caterpillars consists entirely of fruit from plants of the genus Physalis. These fruit do not contain linolenic acid, which is necessary to the growth and maturation of many insects other than H. subflexa. Linolenic acid in an insect’s diet is also necessary for the production of a chemical called volicitin. While most caterpillar species have volicitin in their saliva, H. subflexa does not.
Summary
Most caterpillar species have volicitin in their saliva.
If an insect produces volicitin, then it must have linolenic acid in its diet.
Many insects need linolenic acid to grow.
*Physalis* plants don’t contain linolenic acid.
*H. subflexa* caterpillars only eat *Physalis* plants.
*H. subflexa* caterpillars don’t have volicitin in their saliva.
Very Strongly Supported Conclusions
Most caterpillar species have linolenic acid in their diets.
Most caterpillar species don’t eat only *Physalis* plants.
Many insects can’t grow and mature if they only eat *Physalis* plants.
A
H. subflexa caterpillars synthesize linolenic acid within their bodies.
Unsupported. *H. subflexa* caterpillars don’t get linolenic acid from their diets, but this doesn’t necessarily mean that they synthesize it within their bodies. They might just not need any linolenic acid or volicitin.
B
Most species of caterpillar have sources of linolenic acid in their diets.
Very strongly supported. Most species of caterpillar have volicitin in their saliva. And if an insect produces volicitin, then it must have linolenic acid in its diet. So most species of caterpillar have linolenic acid in their diets.
C
Any caterpillar that has linolenic acid in its diet has volicitin in its saliva.
Unsupported. If a caterpillar has volicitin in its saliva, then it must have linolenic acid in its diet. But this doesn’t necessarily mean that if a caterpillar has linolenic acid in its diet, then it must have volicitin in its saliva. (C) reverses the conditional claim.
D
A food source containing linolenic acid would be poisonous to H. subflexa caterpillars.
Unsupported. *H. subflexa* caterpillars only eat plants that don’t contain linolenic acid. But this doesn’t necessarily mean that plants that do contain linolenic acid are poisonous to them. They might just hatch on *Physalis* plants and never move to other plants.
E
No caterpillars other than H. subflexa eat fruit from plants of the genus Physalis.
Unsupported. Most caterpillars have linolenic acid in their diets. But this doesn’t mean that no other caterpillars eat *Physalis* plants. There might be others like *H. subflexa* that only eat *Physalis* plants, or some that eat *Physalis* plants and other plants with linolenic acid.
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LSAT PrepTest 147 Explanations
Section 1 - Logical Reasoning
- Question 01
- Question 02
- Question 03
- Question 04
- Question 05
- Question 06
- Question 07
- Question 08
- Question 09
- 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 - Reading Comprehension
- Passage 1 – Passage
- Passage 1 – Questions
- Passage 2 – Passage
- Passage 2 – Questions
- Passage 3 – Passage
- Passage 3 – Questions
- Passage 4 – Passage
- Passage 4 – Questions
Section 3 - Reading Comprehension
- Passage 1 – Passage
- Passage 1 – Questions
- Passage 2 – Passage
- Passage 2 – Questions
- Passage 3 – Passage
- Passage 3 – Questions
- Passage 4 – Passage
- Passage 4 – Questions
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