Which one of the following is the simplified sequence of phosphorus cycling in a terrestrial ecosystem?

Category: QuestionsWhich one of the following is the simplified sequence of phosphorus cycling in a terrestrial ecosystem?
Editor">Editor Staff asked 4 months ago

Which one of the following is the simplified sequence of phosphorus cycling in a terrestrial ecosystem?
 
(a) Soil → Producers → Rock minerals → Consumers → Decomposers
 
(b) Rock minerals → Soil → Producers → Consumers → Decomposers
 
(c) Rock minerals → Decomposers → Producers → Consumers
 
(d) Decomposers → Rock minerals → Consumers → Producers
 
This question was posed to me in final exam.
 
I would like to ask this question from Ecosystem topic in portion Ecosystem of Biology – Class 12

1 Answers
Editor">Editor Staff answered 4 months ago

Correct option is (b) Rock minerals → Soil → Producers → Consumers → Decomposers
 
Easiest explanation: The phosphorous cycle starts with rock materials and ends with the decomposers. The phosphorous enters the ecosystem through rock minerals and, there is a negligible exchange of gaseous phosphorus between organism and environment.