18 Questions
Which type of fish feed in the middle-zone of the pond?
Rohus
What type of fish are bottom feeders?
Common Carps
Which fish species feeds on weeds?
Grass Carps
Where can fish culture sometimes be combined with a rice crop?
Canals
What is a common practice during monsoon in composite fish culture systems?
Fish breeding
'Mariculture' is used to meet the demand for more fish due to what reason?
Depletion of marine fish stocks
What is the main purpose of canals in the irrigation system?
To receive water from reservoirs or rivers for irrigation
Which of the following is true about river lift systems?
They draw water directly from rivers to supplement irrigation
How do tanks contribute to water availability for agriculture?
By intercepting and storing run-off from smaller catchment areas
Which of the following is NOT a type of well used for irrigation?
Rain-fed wells
What is the purpose of fresh initiatives like rainwater harvesting for agriculture?
To augment ground water levels by capturing rainwater
In which scenario would a lift system be more rational than canals?
In an area where canal flow is insufficient or irregular
Which method of obtaining fish involves capturing fish from natural resources?
Capture fishing
What is the other term for fish farming?
Culture fishery
Which type of water source can be used for fish production?
Seawater or freshwater
How are marine fish caught to increase yields?
Using satellites and echo-sounders
Which types of fish are farmed in seawater according to the text?
Bhetki and pearl spots
Why are a combination of five or six fish species used in a single fishpond according to the text?
To avoid competition for food among the species
Learn about the different irrigation systems used in India to supply water to agricultural lands, such as wells, canals, rivers, and tanks. Explore the two types of wells - dug wells and tube wells - and how they tap into water sources.
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