1.

Read the following statements and select the correct answer from the codes given below:1. Corals are mainly found in the tropical oceans.2. Corals need clean sediment free water.3. Corals are mainly found in deeper parts of the ocean.4. Rain water promotes the growth of corals.Codes: (a) 1 and 2 (b) 2 and 3 (c) 3 and 4 (d) 2 and 4

Answer»

(a) Corals are mainly found in the tropical oceans. Corals need clean sediment free water. A coral polyp has a sack like body and an opening encircled by stinging tentacles called cnidae. The coral polyp uses calcium carbonate from seawater to build itself a hard skeleton and it is this limestone skeleton that protects the soft coral polyp.



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