Understanding Rice Cultivation: From Seed to Harvest
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Questions and Answers

What is the main function of the endosperm in a rice seed?

  • To protect the embryo from external damage
  • To store nutrients necessary for growth (correct)
  • To regulate seed germination
  • To develop into roots and leaves

    • What is the purpose of seed disinfection in rice cultivation?

  • To enhance seed germination
  • To prevent the spread of diseases and ensure healthy plant growth (correct)
  • To increase seed yield
  • To reduce the cost of seed production

    • What is the primary role of the embryo in a rice seed?

  • To store nutrients for growth
  • To regulate seed germination
  • To develop into roots and leaves (correct)
  • To protect the seed from external damage

    • What is the causal agent of white tip disease of rice?

    <p>Rice white-tip nematode</p> Signup and view all the answers

    In which state can the rice white-tip nematode survive for several years on stored grain?

    <p>Anhydrobiosis</p> Signup and view all the answers

    What is the common disinfectant used for rice in Japan?

    <p>Potassium permanganate</p> Signup and view all the answers

    What is the primary response of an organism to extreme desiccation in anhydrobiosis?

    <p>Entering a state of suspended animation or dormancy</p> Signup and view all the answers

    How do rice seeds typically become infected with Bakanae disease?

    <p>As a result of fungal spores on the seed surface</p> Signup and view all the answers

    What is the primary characteristic of severely infected grain in Bakanae disease?

    <p>Discoloration</p> Signup and view all the answers

    What is the primary cause of rice bacterial grain rot?

    <p>Bacterial pathogens</p> Signup and view all the answers

    What is the typical appearance of symptoms in rice blight?

    <p>Water-soaked lesions with angular shapes</p> Signup and view all the answers

    What is the consequence of severe rice blight infection?

    <p>Premature withering and death of infected leaves</p> Signup and view all the answers

    What is the primary purpose of seed soaking?

    <p>To accelerate the initial stages of plant growth</p> Signup and view all the answers

    What is the recommended temperature range for soaking rice seeds?

    <p>10 to 15°C</p> Signup and view all the answers

    What is an indication of the soaking process?

    <p>100°C as accumulated temperature</p> Signup and view all the answers

    What is a benefit of seed soaking for seeds with hard or impermeable seed coats?

    <p>It helps to hydrate the seeds</p> Signup and view all the answers

    What is a result of seed soaking on metabolic processes within the seed?

    <p>Jumpstarting metabolic processes</p> Signup and view all the answers

    What is a benefit of seed soaking in terms of germination rate?

    <p>It improves the overall germination rate</p> Signup and view all the answers

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