Introduction to Nutrient Cycles in Natural Ecosystems

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Questions and Answers

What is the consequence of essential elements becoming depleted due to the lack of nutrient cycles?

  • Decline in biodiversity (correct)
  • Increase in greenhouse gas emissions
  • Soil degradation
  • Water pollution

How are the carbon, nitrogen, and phosphorus cycles related?

  • Changes in one cycle prevent changes in the others
  • They are completely independent cycles
  • Changes in one cycle have no impact on the others
  • They are interdependent cycles (correct)

How can deforestation alter nutrient cycles?

  • It disrupts the carbon cycle (correct)
  • It increases water pollution
  • It reduces greenhouse gas emissions
  • It has no impact on nutrient cycles

What is one negative impact of agricultural practices involving nitrogen-based fertilizers?

<p>Impact on the nitrogen cycle (B)</p> Signup and view all the answers

Why is it important to increase awareness about nutrient cycles?

<p>To highlight the impact on biodiversity (B)</p> Signup and view all the answers

What is the role of saprobionts in natural ecosystems?

<p>Breaking down dead organisms into smaller inorganic molecules (D)</p> Signup and view all the answers

How do mycorrhizae benefit plants in natural ecosystems?

<p>By connecting to the plant roots and absorbing nutrients from the soil (B)</p> Signup and view all the answers

What is the main function of nutrient cycles in an ecosystem?

<p>Balancing the ecosystem by maintaining nutrient levels (B)</p> Signup and view all the answers

Which type of microorganisms play a crucial role in nutrient recycling in natural ecosystems?

<p>Bacteria and fungi (A)</p> Signup and view all the answers

Why are nutrient cycles described as 'continuous movement'?

<p>Because nutrients flow from living organisms to non-living environment and back (C)</p> Signup and view all the answers

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