UPSC CSE Prelims
Question 55
Consider the following :
- Butterflies
- Fish
- Frogs
How many of the above have poisonous species among them ?
View correct answer and explanation
Correct answer: C
Correct Option: C (All three)
Explanation: Defensive toxins occur in some butterflies, toxic fish and poison frogs, so each of the three broad groups includes poisonous species.
Statement / Pair / Item-wise Analysis:
1. Correct/True - Some butterflies retain plant-derived toxins, such as monarchs.
2. Correct/True - Fish such as pufferfish may contain potent toxins.
3. Correct/True - Poison-dart frogs can carry defensive alkaloid toxins.
Option-wise Analysis:
A. Incorrect-it counts 1, but items 1, 2, 3 qualify, giving 3.
B. Incorrect-it counts 2, but items 1, 2, 3 qualify, giving 3.
C. Correct-exactly 3 of the 3 listed items satisfy the condition.
D. Incorrect-omits correct item 1 (Some butterflies retain plant-derived toxins, such as monarchs.); omits correct item 2 (Fish such as pufferfish may contain potent toxins.); omits correct item 3 (Poison-dart frogs can carry defensive alkaloid toxins.).