56. Which of the following statements is / are incorrect with regard to biogeochemical cycles?
i) Sedimentary cycles are considered as perfect cycles while gaseous cycles are imperfect cycles
ii) Atmosphere is the reservoir for carbon cycle.
iii Gaseous exchanges of phosphorus between organism and environment are negligible unlike carbon
Options:
56. Which of the following statements is / are incorrect with regard to biogeochemical cycles?
i) Sedimentary cycles are considered as perfect cycles while gaseous cycles are imperfect cycles
ii) Atmosphere is the reservoir for carbon cycle.
iii Gaseous exchanges of phosphorus between organism and environment are negligible unlike carbon
Options:
The correct option is D d) Only i
D) Explanation:
Nutrients are basically required by all organisms for the overall growth, development, reproduction and to carry out various life processes. The interesting fact is that the nutrient amount is fixed in the environment. Thus, the nutrients are naturally recycled for the constant supply to the organisms. This movement of the nutrients through various components of the ecosystem is called nutrient cycling
Unlike carbon cycle, there is no respiratory release of phosphorus into atmosphere.
Gaseous exchanges of phosphorus between organism and environment are negligible unlike Carbon cycle.
Broadly, we have two types of nutrient cycling in nature:
Gaseous cycling – This kind of cycling takes place for the gases and the atmosphere acts as
the reservoir for these gases i.e Carbon
Sedimentary cycling – This kind of cycling takes place for the nutrients that exist in their
elemental form and the earth’s crust acts as the reservoir i.e Phosphorous
D)
Explanation:
Nutrients are basically required by all organisms for the overall growth, development, reproduction and to carry out various life processes. The interesting fact is that the nutrient amount is fixed in the environment. Thus, the nutrients are naturally recycled for the constant supply to the organisms. This movement of the nutrients through various components of the ecosystem is called nutrient cycling
Unlike carbon cycle, there is no respiratory release of phosphorus into atmosphere.
Gaseous exchanges of phosphorus between organism and environment are negligible unlike Carbon cycle.
Broadly, we have two types of nutrient cycling in nature:
Gaseous cycling – This kind of cycling takes place for the gases and the atmosphere acts as
the reservoir for these gases i.e Carbon
Sedimentary cycling – This kind of cycling takes place for the nutrients that exist in their
elemental form and the earth’s crust acts as the reservoir i.e Phosphorous
