UPSC CSE Prelims
Question 19
The 2004 Tsunami made people realize that mangroves can serve as a reliable safety hedge against coastal calamities. How do mangroves function as a safety hedge ?
View correct answer and explanation
Correct answer: D
Correct Option: D
Explanation: Mangrove roots anchor coastal vegetation and increase drag on incoming waves and storm surges, thereby reducing some coastal hazard impacts.
Option-wise Analysis:
A: Incorrect - Land-use separation may help but is not the physical function of mangroves as a hedge.
B: Incorrect - Food or medicinal value after a disaster does not explain wave protection.
C: Incorrect - Standing beneath canopies during tsunamis or cyclones is not a reliable safety measure.
D: Correct - Correct as the closest choice: extensive roots stabilise mangroves and dissipate wave energy; severe storms can still uproot trees.
Review Note: The absolute wording “do not get uprooted” overstates resilience; mangroves reduce risk but do not provide guaranteed tsunami protection.