| 1. Temperature between \[{{18}^{o}}C\] and \[{{20}^{o}}C\] |
| 2. Upwelling of cold water |
| 3. Salinity above \[{{40}^{o}}\] %o |
| 4. Turbidity |
| 5. Fresh water |
| 6. Submarine Plate forms |
A) 1, 2, 3 and 4
B) 3, 4, 5 and 6
C) 2, 3, 4 and 5
D) 1,3, 5 and 6
Correct Answer: C
Solution :
Corals grow well in areas where temperature varies between \[{{18}^{o}}C\] and \[{{30}^{o}}C\]. Upwelling of cold water in the tropical oceans leads to lowering of temperature below \[{{18}^{o}}C\] which is harmful for the corals. Salinity between 27% and 30% is suitable for corals and salinity below 27% and higher than 30% is harmful for the corals. Turbidity indicates the presents of suspended material which is harmful for the corals. Like sediment associated with turbidity, fresh water is also harmful for the corals,
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