Given below are two statements, one labelled as Assertion (A) and the other as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below.
Assertion (A):Coral reefs are threatened because of the release of sewage in ocean waters near them.
Reason (R):Release of sewage in oceans tends to reduce the clarity of ocean water.
ABoth A and R are correct and R is the correct explanation of A ✓ Correct
BBoth A and R are correct but R is not the correct explanation of A
CA is correct but R is not correct
DA is not correct but R is correct
Correct answer: (A) Both A and R are correct and R is the correct explanation of A
Explanation
Coral reefs near coasts are harmed when untreated sewage is discharged into the surrounding ocean water.
The assertion is correct because nutrient loading and pollution stress the reef organisms.
The reason is correct because sewage cuts down the clarity of the water.
Reduced clarity blocks sunlight from reaching the symbiotic algae that corals depend on.
Because that loss of light directly damages the reefs, the reason properly explains the assertion.
The algae, called zooxanthellae, supply corals with most of their food through photosynthesis.
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