Assertion (A): Nutrient cycle is also known as biogeochemical cycle.
Reason (R): Nutrient cycle involves the cycling of biogenetic nutrients between living and non-living components.

The correct option is A If both A and R are true and R is the correct explanation of A
Living organisms require nutrients such as nitrogen, carbon, sulphur, oxygen, phosphorus etc., for their growth, reproduction, regulation of body functions and metabolism. Hence they are called biogenetic or essential elements. Transfer of such biogenetic nutrients through abiotic and biotic components of an ecosystem is called biogeochemical cycle or nutrient cycle. Therefore the assertion is true and reason is the correct explanation of assertion.