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 (C)</p> Signup and view all the answers

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

<p>Fish breeding (A)</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 (D)</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 (B)</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 (D)</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 (A)</p> Signup and view all the answers

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

<p>Rain-fed wells (D)</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 (D)</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 (B)</p> Signup and view all the answers

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

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

What is the other term for fish farming?

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

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

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

How are marine fish caught to increase yields?

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

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

<p>Bhetki and pearl spots (B)</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 (A)</p> Signup and view all the answers

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