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Q1. Crops that are grown in the rainy season (June to October) are called: 5th Science
Kharif crops are sown at the beginning of the rainy season and harvested after the rains. Examples: rice, maize, cotton.
Q2. Which of the following is a Rabi crop? 5th Science
Rabi crops are grown in winter (October to March). Wheat, gram, peas, and mustard are examples of Rabi crops.
Q3. Rice is a Kharif crop because it needs: 5th Science
Rice grows best in hot, rainy weather with plenty of water. That is why it is grown during the rainy (Kharif) season.
Q4. Which season is best for growing Rabi crops like wheat and peas? 5th Science
Rabi crops need cool weather to grow. Farmers sow them in October-November and harvest them in March-April.
Q5. The soil that holds the right amount of water and air and is best for most plants is called: 5th Science
Loamy soil is a mixture of sand, clay, and humus. It holds water well but also drains extra water, making it perfect for farming.
Q6. Which type of soil is very sticky when wet and holds too much water? 5th Science
Clayey soil has very fine particles. It holds a lot of water but does not let air pass through easily. It is good for rice but not for most other crops.
Q7. Sandy soil is not good for most crops because: 5th Science
Sandy soil has large particles with big gaps. Water runs through quickly, so plants dry out and cannot get enough water.
Q8. What are the three main things a good crop needs from the soil? 5th Science
Plant roots take in water and dissolved minerals from the soil. Air between soil particles gives oxygen to the roots.
Q9. Farmers add manure or fertilisers to the soil because: 5th Science
Repeated growing of crops uses up minerals in the soil. Manure and fertilisers put back those nutrients so plants grow well.
Q10. Weeds are: 5th Science
Weeds are plants that grow where they are not wanted. They compete with crops for water, sunlight, and nutrients.
Q11. Chemicals used to kill insects that harm crops are called: 5th Science
Insecticides are special poisons that kill harmful insects like locusts, stem borers, and aphids without killing the crop.
Q12. Chemicals used to kill unwanted plants (weeds) are called: 5th Science
Weedicides are chemicals that kill weeds. Farmers spray them so that only the crop plants remain in the field.
Q13. What are pesticides? 5th Science
Pesticide is a broad term. Insecticides, weedicides, and fungicides are all types of pesticides.
Q14. What is crop rotation? 5th Science
Crop rotation means changing the crop grown in a field each season. For example, growing wheat after rice. This keeps the soil healthy.
Q15. Why do farmers practice crop rotation? 5th Science
Different crops take different minerals from the soil. Rotation gives the soil time to recover and reduces the need for fertilisers.
Q16. Which of the following is an example of a Kharif crop? 5th Science
Cotton is grown in the rainy season (Kharif). Wheat, mustard, and peas are Rabi crops (winter).
Q17. Farmers protect crops from birds and animals by: 5th Science
Scarecrows look like humans and scare birds away. Nets physically stop birds and animals from reaching the crop.
Q18. Too much use of pesticides is harmful because: 5th Science
Pesticides also kill useful insects like bees and butterflies. They can also wash into rivers and harm fish and other animals.
Q19. Which of these is a Rabi vegetable? 5th Science
Peas are grown in winter (Rabi season). Cucumber, brinjal, and bitter gourd are summer or rainy season vegetables.
Q20. To get a good crop, farmers should do all of the following EXCEPT: 5th Science
Growing the same crop every year makes the soil lose specific minerals and increases pests. Crop rotation is better.
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