Phosphorus Cycle and Its Importance

Phosphorus is an important element for all living organisms and forms a significant part of the structural framework of ___ and RNA.

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Remembering

Which of the following is NOT a step in the phosphorus cycle?

• Weathering

• Absorption by Plants

• Photosynthesis

• Return to the Environment through Decomposition

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Understanding

The phosphorus cycle does not involve which of the following spheres?

• Lithosphere

• Hydrosphere

• Atmosphere

• Biosphere

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Understanding

Phosphorus is absorbed by the organic matter in the soil and used for various ___ processes.

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Applying

What is the primary reason farmers apply phosphate fertilizers on agricultural land?

• To increase nitrogen levels

• To improve soil texture

• To compensate for low phosphorus in soil

• To enhance water retention

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Applying

The process of breaking down phosphate salts from

rocks is known as ___. It is the first step in the Phosphorus Cycle.

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Remembering

Which human activity is NOT mentioned as impacting the phosphorus cycle?

• Use of fertilizers

• Artificial eutrophication

• Deforestation

• Shipping of food

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Understanding