Ecosystem Question 82
82. Which of the following pairs is a sedimentary type of biogeochemical cycle?
(a) oxygen and nitrogen
(b) phosphorus and sulphur
(c) phosphorus and nitrogen
(d) phosphorus and carbon dioxide
Show Answer
Answer : b
Hints & Solutions
(b) Biogeochemical cycles: Two types:
(a) Gaseous : Biogenetic materials involved in circulation are gases eg. $N_2, O_2, CO_2$ etc.
(b) Sedimentary : Biogenetic materials involved in circulation are non-gaseous eg. $P$, $Ca, S$ etc. forms rocks.
