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Question 49

"Biorock technology" is talked about in which one of the following situations?

AOptions

A) Restoration of damaged coral reefs

B) Development of building materials using plant residues

C) Identification of areas for exploration/extraction of shale gas

D) Providing salt licks for wild animals in forests/protected areas

BSolution

"Biorock technology" (also known as mineral accretion technology) is a method used for the restoration of damaged marine ecosystems, particularly coral reefs. It involves placing a submerged metal structure on the seabed and passing a low-voltage electrical current through it. This causes minerals naturally present in seawater (like calcium carbonate and magnesium hydroxide) to accrete and precipitate onto the structure, forming a white, limestone-like material. Corals and other marine organisms can then attach to this structure and grow significantly faster than they would naturally, aiding in the rehabilitation of degraded reefs. This technology helps to provide a stable substrate for coral growth and enhance their resilience.

CStrategy

For questions on environmental technologies or conservation methods, focus on understanding the underlying principle and the specific problem they address. Many such technologies have clear applications that make them distinct. Stay updated on innovative approaches to environmental challenges.

DSyllabus Analysis

This question falls under Environment & Ecology, specifically focusing on Marine Ecosystems (Coral Reefs) and Conservation Technologies.

EQuestion Analysis

Medium. Requires specific knowledge of an environmental conservation technology.