Question

Q. Consider the following statements regarding coral reefs:

Which of the given statements above is/are correct?

• A. 1 only
• B. 2 only
• C. Both 1 and 2
• D. Neither 1 nor 2

Answer 1

The correct option is A 1 only

Explanation:

Statement 1 is correct

Atoll:

• An atoll is a roughly circular (annular) oceanic reef system surrounding a large (and often deep) central lagoon.
• The lagoon has a depth of 80-150 metres and may be joined with seawater through a number of channels cutting across the reef.
• Atolls are located at great distances from deep-sea platforms, where the submarine features may help in the formation of atolls, such as a submerged island or a volcanic cone which may reach a level suitable for coral growth.

Statement 2 is incorrect

• The 1200-mile long Great Barrier Reef (GBR) off the NE coast of Australia is the world’s largest example of Barrier reef type.
• The GBR is not actually a single reef as the name implies, but rather a very large complex consisting of many reefs.