“Biorock technology” is talked about in which one of the following situations ?
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Answer: A. Biorock technology passes a low-voltage electric current through a steel frame in the sea. Minerals like calcium carbonate deposit on it, giving corals a base to grow quickly. It is used to restore damaged coral reefs, including a project in the Gulf of Kachchh.
Watch for: 'Rock' suggests building materials, but biorock is a marine restoration method.
Why the other options are wrong
- B. Wrong because biorock is not made from plant residues.
- C. Wrong because biorock is not a shale gas survey tool.
- D. Wrong because biorock has nothing to do with salt licks for animals.
Source to check: Zoological Survey of India and Gujarat Forest Department coral restoration project using biorock in the Gulf of Kachchh (reported 2015); Global Coral Reef Alliance on biorock
Answer from the official UPSC key. Written and fact-checked by AI against the official key. Spotted a mistake? Report it.