Irrigation Systems in India
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Questions and Answers

Which type of fish feed in the middle-zone of the pond?

  • Catlas
  • Mrigals
  • Common Carps
  • Rohus (correct)

    • What type of fish are bottom feeders?

  • Common Carps (correct)
  • Catlas
  • Mrigals
  • Rohus

    • Which fish species feeds on weeds?

  • Rohus
  • Grass Carps (correct)
  • Catlas
  • Mrigals

    • Where can fish culture sometimes be combined with a rice crop?

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

    What is a common practice during monsoon in composite fish culture systems?

    <p>Fish breeding</p> Signup and view all the answers

    'Mariculture' is used to meet the demand for more fish due to what reason?

    <p>Depletion of marine fish stocks</p> Signup and view all the answers

    What is the main purpose of canals in the irrigation system?

    <p>To receive water from reservoirs or rivers for irrigation</p> Signup and view all the answers

    Which of the following is true about river lift systems?

    <p>They draw water directly from rivers to supplement irrigation</p> Signup and view all the answers

    How do tanks contribute to water availability for agriculture?

    <p>By intercepting and storing run-off from smaller catchment areas</p> Signup and view all the answers

    Which of the following is NOT a type of well used for irrigation?

    <p>Rain-fed wells</p> Signup and view all the answers

    What is the purpose of fresh initiatives like rainwater harvesting for agriculture?

    <p>To augment ground water levels by capturing rainwater</p> Signup and view all the answers

    In which scenario would a lift system be more rational than canals?

    <p>In an area where canal flow is insufficient or irregular</p> Signup and view all the answers

    Which method of obtaining fish involves capturing fish from natural resources?

    <p>Capture fishing</p> Signup and view all the answers

    What is the other term for fish farming?

    <p>Culture fishery</p> Signup and view all the answers

    Which type of water source can be used for fish production?

    <p>Seawater or freshwater</p> Signup and view all the answers

    How are marine fish caught to increase yields?

    <p>Using satellites and echo-sounders</p> Signup and view all the answers

    Which types of fish are farmed in seawater according to the text?

    <p>Bhetki and pearl spots</p> Signup and view all the answers

    Why are a combination of five or six fish species used in a single fishpond according to the text?

    <p>To avoid competition for food among the species</p> Signup and view all the answers

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