Question 47 from UPSC CSE 2014 - Geography

Question

Which of the following have coral reefs?
1. Andaman and Nicobar Islands
2. Gulf of Kachchh
3. Gulf of Mannar
4. Sundarbans
Select the correct answer using the code given below.

Accepted Answer

Correct Option: A. 1, 2, and 3 only

Strategy: Recall that coral reefs need clear, warm, shallow, and clean water, conditions found in the Andaman and Nicobar Islands, Gulf of Kachchh, and Gulf of Mannar. The Sundarbans, being a deltaic region with high sediment and brackish water, lack typical coral reefs. Thus, eliminate any option including Sundarbans.

Key Info: Coral reefs in India are predominantly found in the following regions:
- Andaman and Nicobar Islands: Home to fringing reefs, especially fringing the islands, with high biodiversity.
- Gulf of Kachchh (Gujarat): Houses the only major coral reef system of the northwest coast, characterized by patch reefs.
- Gulf of Mannar (Tamil Nadu): Known for fringing reefs, with 21 coral islands and rich marine life; also a designated Biosphere Reserve.
- Sundarbans: Located in West Bengal, this region is a mangrove delta with high silt and fresh water influx, unsuitable for coral growth; does not have significant coral reefs.

Coral reefs require specific abiotic conditions: warm, clear, and saline water, low turbidity, and stable substrates. Noteworthy Indian coral reefs are associated with Lakshadweep islands as well, though not included in the given options.

Conservation status: Many of these areas are protected under national parks, sanctuaries, or biosphere reserve statutes. Corals are vital for coastal protection, fisheries, and marine biodiversity.

Answer

Option B: 2 and 4 only

Answer

Option C: 1 and 3 only

Answer

Option D: 1, 2, 3, and 4

Which of the following have coral reefs? Andaman and Nicobar Islands Gulf of Kachchh Gulf of Mannar Sundarbans Select the correct answer using the code given below.

Which of the following have coral reefs?

Andaman and Nicobar Islands

Gulf of Kachchh

Gulf of Mannar

Sundarbans
Select the correct answer using the code given below.