Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Biogeochemical cycle

biogeochemical cycle
1. Biogeochemical cycles are also known as
a) material cycling
b)gaseous cycle
c) sedimentary cycling
d) none of the above
2. Which one is sedimentary cycle?
a)oxygen cycle
b) hydrogen cycle
c) nitrogen cycle
d) phosphorus cycle 
3. The phosphorus cycle lacks ---- component
a)a mineral
b)an aquatic
c)an organic
d)an atmospheric
4. The global hydrologic cycle supports a net flow of atmospheric water vapour from
a)land to the oceans
b)the oceans to land
c)polar to tropical regions
d)tropical to polar regions
5. Which of the following is not gaseous type cycle?
a)carbon cycle
b)nitrogen cycle
c)phosphorus cycle
d)oxygen cycle
6. In the phosphorus cycle, phosphorus becomes available by weathering of rock first to
a) consumers
b)decomposers
c)producers
d)all of these
7. The main nitrogen reservoir in the biosphere is the
a)ocean
b)rocks
c)atmosphere
d)organism
8. Which of the following atoms most often limits the primary productivity of an ecosystem?
a)sulphur
b)phosphorus
c)nitrogen
d) Carbon
9. Phosphorus cycle  absorbs phosphates in the form of 
a)HPO-3
b)P2
c)PO34-
d)AIPO4
10. Among the following biogeochemical cycles which one does not have losses due to respiration?
a)sulphur
b)nitrogen
c)phosphorus
d)all of above
Learn more: Quiz on Nitrogen Cycle
Answers
1. a) material cycling
2. d) phosphorus cycle
3. d)an atmospheric
4. b)the oceans to land
5. c)phosphorus cycle
6. b)decomposers
7. c)atmosphere
8. d) Carbon
9. c)PO34-
10. d)all of above

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