Which one of the following sites does not have coral reef formation?
- A.Gulf of Cambay/Khambhat
- B.Gulf of Mannar
- C.Lakshadweep
- D.Andaman and Nicobar Islands
Correct answer
Explanation
The correct answer is A, Gulf of Cambay/Khambhat. The Gulf of Khambhat has no coral reefs, because its water is muddy with silt and its tides are among the highest on India's coast.
Reef-building corals need warm, clear, shallow and salty water, so that sunlight reaches the algae living inside their tissues. The Narmada, Tapi, Mahi and Sabarmati pour huge loads of silt into the Gulf of Khambhat, and its strong tidal currents keep the water turbid. India's four main coral reef areas are the Gulf of Kachchh, the Gulf of Mannar, Lakshadweep and the Andaman and Nicobar Islands. The Gulf of Kachchh, just to the north-west, does have reefs, protected in the Marine National Park.
B is wrong: the Gulf of Mannar between India and Sri Lanka has fringing reefs around its 21 islands, protected in a marine national park and biosphere reserve.
C is wrong: Lakshadweep is made almost entirely of coral atolls.
D is wrong: the Andaman and Nicobar Islands have extensive fringing reefs, among India's richest.
Exam tip: India's reefs are in Kachchh, Mannar, Lakshadweep and the Andamans; do not confuse the Gulf of Kachchh with Khambhat.
Practice Questions
View allA biological community in its environment such as a pond, an ocean, a forest, even an aquarium is known as
- A.biome
- B.community
- C.abiotic environment
- D.ecosystem
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I. Carbon dioxide (CO2) emissions in India are less than 0.5 t CO2/capita.
II. In terms of CO2 emissions from fuel combustion, India ranks second in Asia-Pacific region.
III. Electricity and heat producers are the largest sources of CO2 emissions in India.
Which of the statements given above is/are correct?
- A.I and III only
- B.II only
- C.II and III only
- D.I, II and III
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- A.Developing solar power production in our country
- B.Granting licences to foreign T.V. channels in our country
- C.Exporting our food products to other countries
- D.Permitting foreign educational institutions to set up their campuses in our country
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- A.Creating the artificial rains in some regions
- B.Reducing the frequency and intensity of tropical cyclones
- C.Reducing the adverse effects of solar wind on the Earth
- D.Reducing the global warming
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Read the full explanation →Which of the following have species that can establish symbiotic relationship with other organisms?
1. Cnidarians
2. Fungi
3. Protozoa
Select the correct answer using the code given below.
- A.1 and 2 only
- B.2 and 3 only
- C.1 and 3 only
- D.1, 2 and 3
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Cnidarians, fungi and protozoa all include species that live in close, mutually useful partnerships with other organisms. Symbiosis means two different species living closely together, often to the benefit of both.
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