Question

Phosphorus has

• A. Perfect nutrient cycle
• B. Gaseous cycle
• C. Mixed cycle
• D. Imperfect nutrient cycle

Answer 1

The correct option is D Imperfect nutrient cycle

• Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms, called 'phosphorus cycle', which is an imperfect nutrient cycle.
  
• Gaseous Cycles are cycles like water cycle, carbon cycle, nitrogen cycle, etc. where the reservoir is a natural atmosphere or the hydrosphere.
• In a perfect nutrient cycle, nutrients are replaced as fast as they are utilized. So all the gaseous cycles are usually considered as perfect cycles.
• Sedimentary Cycles are considered as relatively Imperfect cycles. The Earth’s crust elements are the reservoir of sedimentary cycles. They are called imperfect cycles because some nutrients that are lost from the cycle get locked into sediments and thus, become unavailable for immediate cycling. Eg.: Cycles of phosphorous, sulfur, calcium, magnesium, etc.