2013
Q. 10
Set A
Environment & Ecology
Biodiversity
Consider the following animals :
- Sea cow
- Sea horse
- Sea lion
Which of the above is/are mammal/mammals?
Smart Elimination
Recall basic biology: Sea Horse is a fish. Eliminate any option with 2. This eliminates A, C, and D. You are left with Option B.
Potential Trap
Sea Horse implies 'horse', but it is actually a fish.
Answer Key & Explanation
Answer: BThe correct answer is Option B.
Analysis:
- Sea Cow (Dugong): It is a herbivorous marine mammal. It nurses its young. (Correct)
- Sea Horse: It is a fish (genus Hippocampus). It lays eggs (though the male carries them). (Incorrect)
- Sea Lion: It is a marine mammal (Pinniped), related to seals and walruses. (Correct)
Therefore, only 1 and 3 are mammals.
Value Addition
- Dugong: State animal of Andaman & Nicobar Islands. Found in Gulf of Mannar.
- Sea Horse: Unique because the male gets pregnant and gives birth.
Topic Trend (2011-2025)
Visualize the frequency of this topic across past year papers. Click on any bar to see questions.
Questions
No Questions
Difficulty Assessment
medium
Foundational question based on core concepts.