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    Question

    Consider the following statements: 1. Most of the

    world's coral reefs are in tropical waters 2.  More than one-third of the world's coral reefs are located in the territories of Australia, Indonesia and Philippines 3.  Coral reefs host far more number of animal phyla than those hosted by tropical rainforests. Which of the statements given above is/are correct?
    A 1 and 2 only Correct Answer Incorrect Answer
    B 3 only Correct Answer Incorrect Answer
    C 1 and 3 only Correct Answer Incorrect Answer
    D 1, 2 and 3 Correct Answer Incorrect Answer

    Solution

    All Statements are correct : Coral reefs are large underwater structures composed of the skeletons of corals, which are marine invertebrate animals. Reef-building corals require warm ocean temperatures (20° to 28° C). Hence most of the coral reefs are found in tropical waters. More than three-quarters of the world's reef-building coral species can be found within the waters of "Coral Triangle", the area covering the reefs of northern Australia, Indonesia, Phillipines and Papua New Guinea. Coral reefs have much more animal phyla than those found in tropical rainforests. 32 of the 34 recognised animal Phyla are found on coral reefs compared to 9 Phyla in tropical rainforests.

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