GyanGramQuestion
"If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys." Which one of the following functions of wetlands best reflects the above statement?
PRELIMS 2022 · ENVIRONMENT
"If rainforests and tropical forests are the lungs of the Earth, then surely wetlands fun…
Attempt this previous-year question. The correct option stays hidden until you choose.
Pick an option to check yourself.
• Correct Answer: D
• Wetlands act as kidneys through phytoremediation; aquatic plants absorb heavy metals and excess nutrients (N, P).
• This filtration prevents eutrophication downstream, unlike options describing water circulation or sedimentation.
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