ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When plants create phosphorus during photosynthesis
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When phosphorus is created as filtered groundwater
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When phosphorus is breathed in along with oxygen and discarded as waste
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When phosphorus is released rapidly by the weathering of rocks and then absorbed by vegetation.
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Detailed explanation-1: -Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms. Over time, rain and weathering cause rocks to release phosphate ions and other minerals. This inorganic phosphate is then distributed in soils and water.
Detailed explanation-2: -So, the correct answer is ‘Producers’
Detailed explanation-3: -Weathering. Since the main source of phosphorus is found in rocks, the first step of the phosphorus cycle involves the extraction of phosphorus from the rocks by weathering. Weather events, such as rain and other sources of erosion, result in phosphorus being washed into the soil.
Detailed explanation-4: -Phosphorus is found in the Earth’s crust, primarily in sedimentary rocks that contain phosphate (PO43-) minerals. As these rocks weather and erode, dissolved phosphates enter the soil and travel via rivers to the ocean.
Detailed explanation-5: -Phosphorus is absorbed by the organic matter in the soil which is used for various biological processes. Since phosphorus and phosphorus-containing compounds are present only on land, atmosphere plays no significant role in the phosphorus cycle.