UPSC CSE Prelims
Question 15
In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
View correct answer and explanation
Correct answer: C
Correct Option: C
Explanation: Grasslands can persist because limited moisture and recurrent fires inhibit tree recruitment and favour grasses.
Option-wise Analysis:
A: Incorrect - Wrong: insects and fungi affect vegetation, but they do not chiefly explain persistent grass dominance.
B: Incorrect - Wrong: most grasslands have ample sunlight; nutrient deficiency alone is not the key global explanation.
C: Correct - Correct: seasonal water shortage and fire suppress woody seedlings and maintain open grasslands.
D: Incorrect - Wrong: option C names the main ecological constraints.