| 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. |
A) 1 and 2
B) 2 and 3
C) 3 and 4
D) 2 and 4
Correct Answer: A
Solution :
Corals are mainly found in the tropical oceans. Corals need clean sediment free water. A coral polyp has a like body and an opening encircled by stinging tentcaled cnidae. The coral polyp uses calcium carbonate from seawater to build itself a hard skeleton and it is limestone skeleton that protects the soft coral polyp
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