Fish Production - Capture and Culture - UNSOLVED PRACTICE SET
Chapter: Improvement in Food Resources | Topic: Fish Production Capture and Culture
FISH PRODUCTION - CAPTURE AND CULTURE - UNSOLVED PRACTICE SET
Topic: Fish Production Capture and Culture
Multiple Choice Questions
Q1. Obtaining fish from natural resources like rivers, lakes, and seas is called:
- Aquaculture
- Capture fishing
- Mariculture
- Pisciculture
Q2. Rearing fish in specially prepared ponds or tanks is called:
- Capture fishing
- Culture fishing or aquaculture
- Hunting
- Trawling
Q3. Which of the following is an example of a freshwater fish commonly cultured in India?
- Hilsa
- Rohu and Catla
- Mackerel
- Pomfret
Q4. Marine fish capture is mainly done using:
- Fishing nets operated from boats and trawlers in the sea
- Hand picking from the beach
- Growing them in home aquariums
- Buying from markets
Q5. Overfishing in the oceans leads to:
- More fish in the future
- Depletion of fish stocks, threatening the livelihood of fishermen and marine biodiversity
- Cleaner oceans
- Better quality fish
Short Answer Questions
Q6. Differentiate between capture fishing and culture fishing. Give two examples of fish obtained through each method in India.
Q7. Name two freshwater fish and two marine fish that are important for India's fish production. Why is marine fish production higher than freshwater fish production in coastal states like Kerala and Gujarat?
Q8. What is aquaculture? Why is it considered important for meeting India's growing demand for fish?
Q9. A fisherman in a coastal village finds that his daily catch has reduced by half over the past five years. What could be the reason, and what alternative livelihood strategy could he consider?
Long Answer Questions
Q10. Explain fish production in India. Describe capture fishing (marine and inland) and culture fishing (aquaculture). Why is there a need to shift from dependence on capture fishing to aquaculture? Discuss the potential of freshwater aquaculture (fish ponds) and mariculture (sea farming) in India.
Q11. "The Blue Revolution aims to do for fish what the Green Revolution did for crops." Discuss this statement by explaining: what the Blue Revolution is, how aquaculture has grown in states like Andhra Pradesh and West Bengal, the economic and nutritional importance of fish production, the challenges faced (water pollution, disease in fish farms, lack of cold storage), and the future potential of fish farming in India.
APPLICATION / ANALYSIS
Q12. Case Study — Fisherman vs Fish Farmer:
Two men in a coastal village in Tamil Nadu chose different paths:
| Factor | Ramesh (Capture Fisherman) | Suresh (Fish Farmer) |
|---|---|---|
| Daily investment | Rs 500 (fuel, nets, boat rental) | Rs 2,000 (fish feed, pond maintenance) |
| Daily catch/ harvest | Variable (10-50 kg) | Fixed (100 kg every 6 months) |
| Income stability | Unpredictable, depends on weather and fish availability | More predictable |
| Environmental impact | Contributes to overfishing | Can cause water pollution if not managed |
| Annual income | Rs 1,50,000 (average) | Rs 2,50,000 |
Answer the following:
(a) Why is Ramesh's daily catch variable while Suresh's harvest is more predictable? Explain the difference between capture and culture fishing.
(b) Calculate how much more Suresh earns annually than Ramesh. What percentage increase is this?
(c) If Ramesh wants to switch to fish farming but has no pond, what government support might he need? Suggest one practical first step he could take.
Q13. Real-Life Application — School Fish Pond:
Your school has a 20 metre × 10 metre pond that is currently unused. The biology teacher suggests starting a fish culture project.
Available resources:
- The pond can hold 2 metres of water depth
- Budget: ₹10,000
- Local fish seed (Rohu, Catla, Mrigal) available at ₹2 per fingerling
- Fish feed: ₹50 per kg
- Expected harvest: 500 kg of fish in 10 months
- Selling price: ₹150 per kg
Answer the following:
(a) Calculate the volume of water the pond can hold. How many fingerlings can you stock if the recommended density is 1 fish per 10 litres?
(b) Calculate the expected total income from selling 500 kg of fish. If total expenditure (seeds, feed, labour) is ₹25,000, what is the profit?
(c) Why is it recommended to stock different species (Rohu, Catla, Mrigal) together rather than just one species? Explain the concept of composite fish culture.