Azolla in Rice Farming Quiz
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Questions and Answers

What is the main mechanism through which Azolla fixes nitrogen?

  • Through a symbiotic relationship with rice plants
  • Through the cyanobacterium Anabaena azolla in its dorsal leaves (correct)
  • By attracting nitrogen-fixing insects to its leaves
  • By absorbing nitrogen from the water through its roots
  • What is the role of Azolla in rice-duck farming?

  • Providing shade for ducks and fish, increasing weed growth, and reducing rice production
  • Controlling weeds and pests, reducing chemical fertilizer use, and sustaining rice production (correct)
  • Enhancing soil aeration, increasing the need for chemical fertilizers, and attracting pests
  • Serving as food for ducks and fish, increasing the use of chemical fertilizers, and reducing rice production
  • Why is Azolla considered an ideal nutrient input in farming systems?

  • Due to its ability to attract beneficial microorganisms to the soil
  • Because it acts as a natural pesticide and herbicide
  • Due to its high nitrogen-fixing capacity, rapid multiplication, and quick nutrient release (correct)
  • Because it requires minimal water and sunlight to grow
  • In what way does Azolla help in reducing environmental impact?

    <p>By decreasing the use of chemical fertilizers and associated energy inputs</p> Signup and view all the answers

    What is the significance of Azolla in the context of rising costs of chemical fertilizers?

    <p>It provides an alternative to expensive chemical fertilizers</p> Signup and view all the answers

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