Q.1: Explain any one method of crop production which ensures high yield.
✅ Answer
Intercropping is one method of crop production that ensures high yield.
📘 Explanation
• In intercropping, two or more crops are grown together in a fixed row pattern.
• Example: 🌽 Maize + 🫘 Soyabean
• The crops need different nutrients, so there is less competition.
• Pests and diseases spread less because all plants are not of the same type.
• Soil nutrients are used efficiently, which increases overall production.
🤔 Did You Know?
Intercropping is also called smart farming because it gives more yield from the same land.
Q.2: Why are manure and fertilizers used in fields?
✅ Answer
Manure and fertilizers are used to supply nutrients to the soil and improve crop yield.
📘 Explanation
• 🌿 Manure adds organic matter and improves soil structure and fertility.
• 🧪 Fertilizers supply nutrients like nitrogen, phosphorus, and potassium quickly.
• Together, they help plants grow healthy and produce more grains.
🤔 Did You Know?
Manure improves soil fertility for a long time, while fertilizers give quick results.
Q.3: What are the advantages of inter-cropping and crop rotation?
✅ Answer
Intercropping and crop rotation improve crop yield and soil fertility.
📘 Explanation
Intercropping:
• Better use of nutrients
• Less pest and disease spread
• Higher yield
Crop Rotation:
• Prevents nutrient loss
• Reduces pests and weeds
• Maintains long-term soil health
🤔 Did You Know?
Crop rotation was practiced by farmers even before modern science.
Q.4: What is genetic manipulation? How is it useful in agricultural practices?
✅ Answer
Genetic manipulation is the process of introducing or modifying genes in crops to get desired traits.
📘 Explanation
• Useful genes are added to crops to improve quality.
• It helps develop genetically modified (GM) crops.
• These crops can resist diseases, pests, drought, and salinity.
🤔 Did You Know?
Bt cotton is a genetically modified crop grown widely in India.
Q.5: How do storage grain losses occur?
✅ Answer
Storage grain losses occur due to biotic and abiotic factors.
📘 Explanation
• 🐛 Biotic factors: insects, rodents, fungi, bacteria
• 🌡️ Abiotic factors: high moisture, high temperature
• These cause weight loss, poor germination, and reduced quality.
🤔 Did You Know?
Improper storage can destroy up to 10–20% of grains every year.
Q.6: How do good animal husbandry practices benefit farmers?
✅ Answer
Good animal husbandry practices help farmers get more production and income.
📘 Explanation
• Healthy animals give more milk, eggs, and meat.
• Proper feeding and vaccination reduce disease.
• Less loss and better quality products increase farmer profit.
🤔 Did You Know?
Healthy animals also live longer and require less medical expense.
Q.7: What are the benefits of cattle farming?
✅ Answer
Cattle farming provides milk, labour, and income to farmers.
📘 Explanation
🥛 Milk is an important food.
🚜 Cattle help in ploughing and transport.
🌱 Cow dung is used as manure and fuel.
Supports rural livelihood.
🤔 Did You Know?
Cow dung is used to make biogas, a clean source of energy.
Q.8: For increasing production, what is common in poultry, fisheries and bee-keeping?
✅ Answer
All three use scientific management practices to increase production.
📘 Explanation
Common practices include:
• Improved breeds 🧬
• Proper feeding 🍽️
• Clean housing 🏠
• Disease control 💉
These practices ensure higher yield and better quality.
🤔 Did You Know?
Poultry is one of the fastest growing food industries in India.
Q.9: How do you differentiate between capture fishing, mariculture and aquaculture?
✅ Answer
They differ based on method and type of water used.
📘 Explanation
| Type | Meaning |
|---|---|
| 🎣 Capture Fishing | Catching fish from natural water bodies |
| 🌊 Mariculture | Farming of marine fish in sea water |
| 🧑🌾 Aquaculture | Farming of fish in fresh or brackish water |
🤔 Did You Know?
Mariculture is important because natural marine fish stocks are decreasing.