Attempt this previous-year question. The correct option stays hidden until you choose.
What would happen if phytoplankton of an ocean is completely destroyed for some reason?
1. The ocean as a carbon sink would be adversely affected.
2. The food chains in the ocean would be adversely affected.
3. The density of ocean water would drastically decrease.
Pick an option to check yourself.
• Correct Answer: D
• Phytoplankton drive the ocean's biological carbon pump and form the base of marine food webs; their loss would collapse both.
• Ocean density is governed by temperature and salinity, not phytoplankton biomass.
Attempt Prelims MCQs or open Mains questions by paper — then continue the same bank inside the app with visual decks.
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