Crop Production and Management Part 2: MCQs (Q26–Q50)
🌱 Crop Production and Management – MCQs for Class 8 Science
Part 2: Q26 – Q50
Q26. Which one of the following is NOT a method of irrigation?
A) Drip irrigation
B) Sprinkler system
C) Canal irrigation
D) Threshing
✅ Correct Answer: D) Threshing
Explanation:
- A) Drip irrigation – Modern irrigation method.
- B) Sprinkler system – Modern irrigation method.
- C) Canal irrigation – Traditional irrigation method.
- D) Threshing – ✔ Separation of grains, not irrigation.
Q27. Which nutrient is provided by urea fertilizer?
A) Nitrogen
B) Potassium
C) Phosphorus
D) Calcium
✅ Correct Answer: A) Nitrogen
Explanation:
- A) Nitrogen – ✔ Urea is rich in nitrogen.
- B) Potassium – Supplied by potash.
- C) Phosphorus – Supplied by superphosphate.
- D) Calcium – Supplied by lime.
Q28. The practice of growing two or more crops together is called:
A) Crop rotation
B) Mixed cropping
C) Monocropping
D) Harvesting
✅ Correct Answer: B) Mixed cropping
Explanation:
- A) Crop rotation – Crops grown alternately in different seasons.
- B) Mixed cropping – ✔ Two or more crops grown together.
- C) Monocropping – Single crop in a field.
- D) Harvesting – Cutting matured crops.
Q29. Which of the following is NOT a Kharif crop?
A) Paddy
B) Maize
C) Groundnut
D) Wheat
✅ Correct Answer: D) Wheat
Explanation:
- A) Paddy – Kharif crop.
- B) Maize – Kharif crop.
- C) Groundnut – Kharif crop.
- D) Wheat – ✔ Rabi crop.
Q30. Which of the following improves soil texture and adds humus?
A) Fertilizer
B) Manure
C) Pesticide
D) Urea
✅ Correct Answer: B) Manure
Explanation:
- A) Fertilizer – Adds nutrients but no humus.
- B) Manure – ✔ Improves soil structure and adds organic matter.
- C) Pesticide – Kills pests.
- D) Urea – Chemical fertilizer, no humus.
Q31. The method of irrigation used in areas of irregular land is:
A) Drip system
B) Canal irrigation
C) Sprinkler system
D) Traditional pump
✅ Correct Answer: C) Sprinkler system
Explanation:
- A) Drip system – For root-level irrigation.
- B) Canal irrigation – Needs flat land.
- C) Sprinkler system – ✔ Suitable for uneven lands.
- D) Traditional pump – Old system, wastes water.
Q32. Which one of the following is a cash crop?
A) Wheat
B) Cotton
C) Gram
D) Barley
✅ Correct Answer: B) Cotton
Explanation:
- A) Wheat – Food crop.
- B) Cotton – ✔ Cash crop for textile industry.
- C) Gram – Food crop.
- D) Barley – Food crop.
Q33. Granaries are used for storing:
A) Vegetables
B) Pulses and grains
C) Fruits
D) Fodder
✅ Correct Answer: B) Pulses and grains
Explanation:
- A) Vegetables – Stored in cold storage.
- B) Pulses and grains – ✔ Stored in granaries.
- C) Fruits – Stored in refrigerators.
- D) Fodder – Stored separately.
Q34. Which is an advantage of fertilizers over manure?
A) Adds humus
B) Easy transportation and quick action
C) Improves soil texture
D) Increases water holding
✅ Correct Answer: B) Easy transportation and quick action
Explanation:
- A) Adds humus – Fertilizers don’t add humus.
- B) Easy transportation and quick action – ✔ Main advantage.
- C) Improves soil texture – Manure does, not fertilizers.
- D) Increases water holding – Manure helps here.
Q35. The process of supplying water at regular intervals is called:
A) Fertilization
B) Irrigation
C) Weeding
D) Threshing
✅ Correct Answer: B) Irrigation
Explanation:
- A) Fertilization – Adding nutrients.
- B) Irrigation – ✔ Supplying water to crops.
- C) Weeding – Removing weeds.
- D) Threshing – Separating grain from stalk.
Q36. Which machine combines harvesting, threshing, and winnowing?
A) Tractor
B) Cultivator
C) Combine harvester
D) Seed drill
✅ Correct Answer: C) Combine harvester
Explanation:
- A) Tractor – Vehicle for pulling implements.
- B) Cultivator – For ploughing.
- C) Combine harvester – ✔ Performs multiple functions.
- D) Seed drill – For sowing seeds.
Q37. The chemical used to kill weeds is called:
A) Fertilizer
B) Pesticide
C) Insecticide
D) Weedicide
✅ Correct Answer: D) Weedicide
Explanation:
- A) Fertilizer – Adds nutrients.
- B) Pesticide – Kills pests in general.
- C) Insecticide – Kills insects only.
- D) Weedicide – ✔ Specifically kills weeds.
Q38. The irrigation method that minimizes water wastage the most is:
A) Traditional canal system
B) Drip irrigation
C) Sprinkler irrigation
D) Persian wheel
✅ Correct Answer: B) Drip irrigation
Explanation:
- A) Canal system – High wastage.
- B) Drip irrigation – ✔ Saves maximum water.
- C) Sprinkler irrigation – Some water loss.
- D) Persian wheel – Old method, wastes water.
Q39. Which type of soil is best for wheat?
A) Sandy soil
B) Loamy soil
C) Clayey soil
D) Rocky soil
✅ Correct Answer: B) Loamy soil
Explanation:
- A) Sandy soil – Too loose.
- B) Loamy soil – ✔ Best for wheat cultivation.
- C) Clayey soil – Poor drainage.
- D) Rocky soil – Unfit for crops.
Q40. What is harvesting?
A) Watering crops
B) Removal of weeds
C) Cutting and collecting mature crops
D) Adding fertilizers
✅ Correct Answer: C) Cutting and collecting mature crops
Explanation:
- A) Watering crops – Irrigation.
- B) Removal of weeds – Weeding.
- C) Cutting and collecting mature crops – ✔ Harvesting.
- D) Adding fertilizers – Manuring/fertilization.
Q41. Which bacteria live in root nodules of legumes?
A) Rhizobium
B) Salmonella
C) Lactobacillus
D) Streptococcus
✅ Correct Answer: A) Rhizobium
Explanation:
- A) Rhizobium – ✔ Nitrogen-fixing bacteria in legumes.
- B) Salmonella – Causes disease.
- C) Lactobacillus – Helps in curdling milk.
- D) Streptococcus – Pathogenic bacteria.
Q42. Why is preparation of soil important?
A) To store water
B) To add pesticides
C) To loosen soil for root penetration
D) To harvest early
✅ Correct Answer: C) To loosen soil for root penetration
Explanation:
- A) To store water – Not main reason.
- B) To add pesticides – Applied later.
- C) To loosen soil for root penetration – ✔ Main purpose.
- D) To harvest early – Not correct.
Q43. Which is an example of a Rabi crop?
A) Maize
B) Paddy
C) Barley
D) Groundnut
✅ Correct Answer: C) Barley
Explanation:
- A) Maize – Kharif crop.
- B) Paddy – Kharif crop.
- C) Barley – ✔ Rabi crop.
- D) Groundnut – Kharif crop.
Q44. Which of the following is NOT a traditional irrigation device?
A) Moat (pulley system)
B) Chain pump
C) Persian wheel
D) Drip irrigation
✅ Correct Answer: D) Drip irrigation
Explanation:
- A) Moat – Traditional.
- B) Chain pump – Traditional.
- C) Persian wheel – Traditional.
- D) Drip irrigation – ✔ Modern.
Q45. Which process ensures proper spacing and depth of seeds?
A) Broadcasting
B) Dibbling
C) Seed drill
D) Funnel sowing
✅ Correct Answer: C) Seed drill
Explanation:
- A) Broadcasting – Random scattering.
- B) Dibbling – Manual sowing.
- C) Seed drill – ✔ Ensures depth and spacing.
- D) Funnel sowing – Traditional, less uniform.
Q46. Which of these is a Kharif crop?
A) Wheat
B) Gram
C) Maize
D) Mustard
✅ Correct Answer: C) Maize
Explanation:
- A) Wheat – Rabi.
- B) Gram – Rabi.
- C) Maize – ✔ Kharif.
- D) Mustard – Rabi.
Q47. What is the main drawback of fertilizers?
A) Increase crop yield
B) Decrease soil fertility in long run
C) Cheap and easy to transport
D) Quick action on crops
✅ Correct Answer: B) Decrease soil fertility in long run
Explanation:
- A) Increase crop yield – Advantage.
- B) Decrease soil fertility in long run – ✔ Overuse damages soil.
- C) Cheap and easy to transport – Not true, fertilizers are costly.
- D) Quick action on crops – Advantage.
Q48. Which storage method prevents attack of pests?
A) Using neem leaves
B) Storing in damp bags
C) Exposing to rain
D) Mixing with stones
✅ Correct Answer: A) Using neem leaves
Explanation:
- A) Using neem leaves – ✔ Repels insects/pests.
- B) Damp bags – Spoils grains.
- C) Rain exposure – Ruins grains.
- D) Stones – Not useful.
Q49. Which of the following is a leguminous crop?
A) Wheat
B) Gram
C) Rice
D) Maize
✅ Correct Answer: B) Gram
Explanation:
- A) Wheat – Non-legume.
- B) Gram – ✔ Legume, fixes nitrogen.
- C) Rice – Non-legume.
- D) Maize – Non-legume.
Q50. The process of removing unwanted plants from the field is called:
A) Irrigation
B) Weeding
C) Harvesting
D) Storage
✅ Correct Answer: B) Weeding
Explanation:
- A) Irrigation – Providing water.
- B) Weeding – ✔ Removing unwanted plants.
- C) Harvesting – Cutting crops.
- D) Storage – Keeping grains safe.
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