Question

Which one of the following is not a gaseous biogeochemical cycle in an ecosystem?

• A. Nitrogen cycle
• B. Oxygen cycle
• C. Phosphorus cycle
• D. Carbon cycle

Answer 1

The correct option is C

Phosphorus cycle

In gaseous cycles, the reservoir for elements like oxygen, carbon and nitrogen is in the atmosphere. Phosphorus is an element which is present in the sediments of the Earth. Therefore, the phosphorus cycle is called a sedimentary cycle.