Question

Write a note on corals

Answer 1

Corals are marine invertebrates in the classAnthozoa of phylum Cnidaria. They typically live in compact colonies of many identical individual polyps. The group includes the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.

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Answer 2

Answer:

• Corals are small, sedentary marine animals with a calcareous homy skeleton.

• These thrive in warm shallow water and grow into large colonies called coral reefs.

• They secrete hard rock like substance. The coral secretion and their skeletons form coral deposits in the form of reefs.

• They are mainly of three kinds: barrier reef, fringing reef and atolls.

• The Great Barrier Reef of Australia and Lakshadweep Islands are a good example of the first kind of coral reefs.