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Practice Class 8 Science Chapter 1 Crop Production and Management MCQ Questions with Answers based on the latest NCERT syllabus. Solve important concept-based MCQs on manure, fertilizers, irrigation, harvesting, threshing, and crop storage with detailed solutions for CBSE, State Board, Olympiad, and scholarship exam preparation.
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Chapter Information
Subject: Science
Class: 8
Chapter: Crop Production and Management
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Difficult
Based On: NCERT Latest Syllabus (2026)
Introduction
Efficient crop production depends on scientific farming practices such as maintaining soil fertility, supplying water at the right time, harvesting mature crops, and storing grains safely. This practice set focuses on application-based questions that strengthen students’ conceptual understanding and reasoning skills according to the latest NCERT syllabus.
What You Will Learn
✔ Balanced use of manure and fertilizers
✔ Importance of proper harvesting
✔ Difference between harvesting and threshing
✔ Scientific grain storage
✔ Water management in agriculture
✔ NCERT concept-based revision
✔ Higher-order reasoning practice
Why This Topic Is Important
Every stage of agriculture—from soil preparation to grain storage—affects crop quality and yield. Understanding these concepts helps students perform well in school examinations, Olympiads, and scholarship tests while developing scientific thinking about sustainable farming.
1. MCQ Questions with Detailed Solutions
Q1. Which farming practice improves soil fertility without polluting the environment?
A) Excessive use of chemical fertilizers
B) Applying organic manure
C) Burning crop residues
D) Over-irrigation
Answer
B) Applying organic manure
Concept Behind This Question
Organic manure naturally enriches the soil.
Step-by-Step Solution
Organic manure adds humus, improves soil texture, increases water-holding capacity, and supports beneficial microorganisms without causing environmental pollution.
Therefore, the correct answer is B.
Exam Tip
Organic Manure = Healthy Soil + Healthy Environment
Q2. Why is harvesting done only after crops have matured?
A) Mature crops produce better-quality grains.
B) It reduces seed germination.
C) It increases weed growth.
D) It changes the crop season.
Answer
A) Mature crops produce better-quality grains.
Concept Behind This Question
Harvesting at the correct stage ensures maximum yield.
Step-by-Step Solution
If crops are harvested before maturity, grains remain underdeveloped and yield decreases. Mature crops produce fully developed grains with better quality.
Therefore, the correct answer is A.
Exam Tip
Harvest Mature Crops for Maximum Yield
Q3. Which process separates grains from the harvested stalks?
A) Sowing
B) Irrigation
C) Threshing
D) Ploughing
Answer
C) Threshing
Concept Behind This Question
Threshing is performed after harvesting.
Step-by-Step Solution
After crops are harvested, threshing separates the grains from the stalks and straw. It can be done manually or with machines such as combine harvesters.
Therefore, the correct answer is C.
Exam Tip
Harvesting = Cutting Crops | Threshing = Separating Grains
Q4. Which storage condition best protects grains for a long period?
A) High moisture and poor ventilation
B) Dry, clean, and airtight storage
C) Open storage during rainy weather
D) Mixing damaged grains with healthy grains
Answer
B) Dry, clean, and airtight storage
Concept Behind This Question
Proper storage reduces post-harvest losses.
Step-by-Step Solution
Dry and airtight storage prevents fungal growth, insect attack, and moisture damage, helping preserve grain quality for a longer time.
Therefore, the correct answer is B.
Exam Tip
Dry + Clean + Airtight = Safe Grain Storage
Q5. Why should irrigation be supplied according to the needs of different crops?
A) Every crop requires the same amount of water.
B) Different crops need different quantities of water.
C) Irrigation has no effect on crop growth.
D) Water should only be supplied after harvesting.
Answer
B) Different crops need different quantities of water.
Concept Behind This Question
Water requirements vary among crops.
Step-by-Step Solution
Some crops require more water than others depending on their type, growth stage, climate, and soil conditions. Proper irrigation improves crop growth while conserving water.
Therefore, the correct answer is B.
Exam Tip
Different Crops = Different Water Needs
Important Formulas & Concepts
1. Organic Manure
Benefits:
- Adds humus
- Improves soil fertility
- Enhances water-holding capacity
- Eco-friendly
2. Harvesting
Harvesting means cutting mature crops at the correct time.
3. Threshing
Threshing is the process of separating grains from harvested stalks.
4. Safe Grain Storage
Essential conditions:
- Dry storage
- Clean containers
- Airtight structures
- Protection from insects and rodents
5. Crop Water Requirement
Water requirement depends on:
- Crop type
- Growth stage
- Soil
- Climate
Related Practice Questions
- Why is organic manure considered eco-friendly?
- Explain the difference between harvesting and threshing.
- Why should grains be stored in dry conditions?
- Why do different crops require different amounts of water?
- What are the advantages of proper harvesting?
Mini Quiz Challenge
Fill in the blanks
- __________ separates grains from harvested stalks.
- Organic manure improves soil __________.
- Different crops require different amounts of __________.
Answers
- Threshing
- Fertility
- Water
Exam Tips
✔ Learn the difference between harvesting and threshing.
✔ Revise the benefits of organic manure.
✔ Understand proper storage conditions.
✔ Remember that crop water requirements vary.
✔ Practice reasoning-based NCERT questions.
Quick Revision Notes
✔ Organic manure improves soil naturally.
✔ Harvest only mature crops.
✔ Threshing separates grains from stalks.
✔ Dry storage prevents spoilage.
✔ Different crops require different irrigation levels.
✔ Scientific farming increases productivity.
✔ Proper storage reduces grain losses.
✔ Sustainable agriculture protects natural resources.
Common Mistakes Students Make
❌ Confusing harvesting with threshing.
❌ Thinking all crops require equal irrigation.
❌ Storing grains before drying them.
❌ Assuming fertilizers and manure are identical.
❌ Harvesting crops before full maturity.
Key Takeaways
✔ Organic manure improves soil fertility naturally.
✔ Mature crops produce better-quality grains.
✔ Threshing separates grains from harvested plants.
✔ Dry and airtight storage protects grains.
✔ Water requirements differ among crops.
✔ Scientific farming improves agricultural productivity.
✔ Sustainable practices ensure long-term food security.
FAQs
1. What is harvesting?
Harvesting is the process of cutting mature crops from the field.
2. What is threshing?
Threshing is the process of separating grains from harvested stalks.
3. Why should grains be stored in dry conditions?
Dry storage prevents fungal growth, moisture damage, and insect attack.
4. Why is organic manure preferred in sustainable farming?
Because it improves soil fertility naturally and is environmentally friendly.
5. Do all crops require the same amount of water?
No. Different crops require different amounts of water depending on their growth and environmental conditions.
Conclusion
Practice Set 13 helps students master important agricultural concepts such as organic manure, harvesting, threshing, irrigation management, and grain storage. These NCERT-based reasoning MCQs strengthen conceptual understanding and improve preparation for school examinations, Olympiads, and scholarship tests. Consistent practice will help students build confidence and score higher in Science.
Related links
- Class 8 English Chapter 1 Another Chance part-6
- Class 8 Social Science Chapter 1 How, When and Where part-9
- Class 8 Maths Chapter 4 Practical Geometry part-3
- Class 8 Science Chapter 1 Crop Production and Management part-9
- Class 8 English Chapter 1 Another Chance part-5
- Class 8 Social Science Chapter 1 How, When and Where part-8
- Class 8 Maths Chapter 4 Practical Geometry part-2
- Class 8 Science Chapter 1 Crop Production and Management part-8
- Class 8 English Chapter 1 Another Chance psrt-4
- Class 8 Social Science Chapter 1 How, When and Where part-8
- Class 8 Science Chapter 1 Crop Production and Management part-7
- Class 8 Maths Chapter 4 Practical Geometry part-1
- Class 8 Social Science Chapter 1 How, When and Where part-7
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