Question

In which of the following both pairs have correct combination?

A	Gaseous nutrient cycle	Carbon and sulphur
	Sedimentary nutrient cycle	Nitrogen and phosphorus
B	Gaseous nutrient cycle	Nitrogen and sulphur
	Sedimentary nutrient cycle	Carbon and phosphorus
C	Gaseous nutrient cycle	Sulphur and phosphorus
	Sedimentary nutrient cycle	Carbon and Nitrogen
D	Gaseous nutrient cycle	Carbon and Nitrogen
	Sedimentary nutrient cycle	Sulphur and phosphorus

• A. A
• B. B
• C. C
• D. D

Answer 1

The correct option is D D

In gaseous nutrient cycles, the materials involved in circulation between biotic and abiotic components of biosphere are gases or vapours and the reservoir pool is atmosphere or hydrosphere, e.g., carbon, hydrogen, oxygen, nitrogen, water.

Sulphur has both sedimentary and gaseous nutrient cycles.

Nutrient cycling are of two types:
(i) Gaseous (e.g. C and N cycles)
(ii) Sedimentary (e.g. P and S cycles)

Sedimentary cycles involve the cyclic exchange of minerals from the earth's crust or the lithosphere with the biotic components of the ecosystem. Examples of cycles under the sedimentary category are sulfur and phosphorus cycles.

Gaseous cycles involve the cyclic exchange of minerals between atmosphere and the biotic world. Common examples of gaseous cycles are carbon and nitrogen cycles.

So, the correct answer is option D.