The coral reef, which is circular or elliptical in shape and encloses a lagoon, is called

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Q: 16 (CDS-I/2002)
The coral reef, which is circular or elliptical in shape and encloses a lagoon, is called

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,109,167,113,109,17,37

keywords: 

{'coral reef': [0, 0, 1, 1], 'barrier reef': [0, 0, 2, 0], 'coral fringe': [0, 0, 1, 0], 'coral dune': [0, 0, 1, 0], 'lagoon': [0, 0, 1, 0], 'anatoli': [0, 0, 1, 0], 'shape': [6, 0, 3, 12]}

Option 1: A barrier reef is a long, narrow coral reef situated parallel to the shore, but separated from it by a lagoon or channel. It is not circular or elliptical in shape and does not enclose a lagoon. Therefore, option 1 is not the correct answer.

Option 2: Anatoli is not a term used to describe a type of coral reef. This option does not provide a correct answer.

Option 3: A coral dune is a mound of coral debris that forms a sand dune shape. It is not circular or elliptical and does not enclose a lagoon. Therefore, option 3 is not the correct answer.

Option 4: A coral fringe is a type of coral reef that runs parallel to the coast and is often found close to the shoreline. It does not typically enclose a lagoon. Therefore, option 4 is not the correct answer.

Based on the options provided, the correct answer is option 2. However, it is important to note that "Anatoli" is not a commonly used term to describe a type of coral reef.