UPSC CSE Prelims
Question 53
Which of the following can be threats to the biodiversity of a geographical area?
- Global warming
- Fragmentation of habitat
- Invasion of alien species
- Promotion of vegetarianism
Select the correct answer using the codes given below:
View correct answer and explanation
Correct answer: A
Correct Option: A
Explanation: Climate change, habitat fragmentation and invasive alien species are recognised causes of biodiversity decline.
Statement/Item-wise Analysis:
1: Correct - Global warming shifts habitats and stresses species.
2: Correct - Fragmentation reduces connectivity, genetic exchange and population viability.
3: Correct - Invasive aliens may outcompete or prey on native species.
4: Incorrect - Vegetarian diets are not intrinsically a direct threat to biodiversity.
Option-wise Analysis:
A: Correct - includes exactly the valid statements/items and excludes the invalid ones.
B: Incorrect - omits correct item 1.
C: Incorrect - includes incorrect item 4; omits correct items 2, 3.
D: Incorrect - includes incorrect item 4.