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Practice Class 8 Science Chapter 1 Crop Production MCQ Questions with Answers based on the latest NCERT syllabus. Solve important higher-order NCERT MCQs on soil fertility, crop seasons, seed drills, irrigation, and weed management 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
Successful farming requires proper planning, scientific knowledge, and efficient use of agricultural resources. Farmers improve crop production by selecting the right season, maintaining soil fertility, using modern equipment, and protecting crops from weeds. This practice set contains higher-order reasoning questions that strengthen conceptual understanding and analytical thinking.
What You Will Learn
✔ Soil fertility management
✔ Correct crop season selection
✔ Advantages of seed drills
✔ Efficient irrigation practices
✔ Weed management techniques
✔ NCERT concept-based revision
✔ Higher-order reasoning questions
Why This Topic Is Important
Understanding the scientific principles behind crop production helps students appreciate sustainable agriculture and modern farming techniques. These concepts are frequently tested in school examinations, Olympiads, and scholarship tests.
1. MCQ Questions with Detailed Solutions
Q1. Why should farmers avoid growing the same crop in the same field year after year?
A) It improves soil fertility automatically.
B) It may deplete specific soil nutrients continuously.
C) It increases rainfall.
D) It reduces sunlight.
Answer
B) It may deplete specific soil nutrients continuously.
Concept Behind This Question
Different crops absorb different nutrients from the soil.
Step-by-Step Solution
If the same crop is grown repeatedly, it continuously uses the same nutrients from the soil. This leads to nutrient deficiency and reduced crop yield. Crop rotation helps overcome this problem.
Therefore, the correct answer is B.
Exam Tip
Repeated cultivation of one crop reduces soil fertility.
Q2. Which of the following is the biggest advantage of using a seed drill over traditional broadcasting?
A) It increases weed growth.
B) It places seeds at uniform depth and spacing.
C) It removes insects automatically.
D) It harvests crops simultaneously.
Answer
B) It places seeds at uniform depth and spacing.
Concept Behind This Question
Uniform sowing improves crop establishment.
Step-by-Step Solution
A seed drill sows seeds at equal distances and proper depth, reducing seed wastage and improving germination as compared to traditional broadcasting.
Therefore, the correct answer is B.
Exam Tip
Seed Drill = Uniform Depth + Uniform Spacing
Q3. A farmer notices weeds growing rapidly after irrigation. What should be done first?
A) Harvest the crop immediately.
B) Remove weeds before they mature and produce seeds.
C) Stop crop growth completely.
D) Increase fertilizer use without removing weeds.
Answer
B) Remove weeds before they mature and produce seeds.
Concept Behind This Question
Early weed removal prevents future weed growth.
Step-by-Step Solution
If weeds are removed before flowering and seed formation, their spread can be controlled effectively. This reduces competition for water, nutrients, sunlight, and space.
Therefore, the correct answer is B.
Exam Tip
Remove Weeds Early for Better Yield.
Q4. Which agricultural practice mainly helps conserve water without affecting crop growth?
A) Flooding fields regularly
B) Using drip irrigation according to crop requirements
C) Irrigating fields every hour
D) Watering crops during rainfall
Answer
B) Using drip irrigation according to crop requirements
Concept Behind This Question
Efficient irrigation conserves water resources.
Step-by-Step Solution
Drip irrigation delivers water directly to plant roots only when needed, reducing evaporation and ensuring efficient water use.
Therefore, the correct answer is B.
Exam Tip
Drip Irrigation = Maximum Efficiency
Q5. Which farming practice helps maintain soil productivity while protecting the environment?
A) Excessive fertilizer use
B) Sustainable farming practices
C) Continuous burning of crop residues
D) Over-irrigation
Answer
B) Sustainable farming practices
Concept Behind This Question
Modern agriculture should balance productivity and environmental conservation.
Step-by-Step Solution
Sustainable farming includes balanced fertilizer use, crop rotation, efficient irrigation, organic manure, and soil conservation. These practices improve long-term productivity while protecting natural resources.
Therefore, the correct answer is B.
Exam Tip
Sustainable Farming = Better Future Agriculture
Important Formulas & Concepts
1. Continuous Cropping
Growing the same crop repeatedly may:
- Reduce soil fertility
- Increase nutrient deficiency
- Lower crop yield
2. Seed Drill
Advantages:
- Uniform seed spacing
- Correct sowing depth
- Reduced seed wastage
- Better germination
3. Weed Management
Effective methods:
- Manual removal
- Hoe
- Weedicides (used carefully)
4. Efficient Irrigation
Water should be supplied:
- According to crop requirement
- Without unnecessary wastage
5. Sustainable Farming
Includes:
- Crop rotation
- Organic manure
- Balanced fertilizers
- Water conservation
- Soil conservation
Related Practice Questions
- Why should farmers avoid continuous cultivation of the same crop?
- Explain the advantages of a seed drill.
- Why should weeds be removed before flowering?
- How does drip irrigation conserve water?
- What is sustainable farming?
Mini Quiz Challenge
Fill in the blanks
- Growing the same crop repeatedly reduces soil __________.
- A __________ places seeds uniformly in the soil.
- Sustainable farming helps protect the __________.
Answers
- Fertility
- Seed Drill
- Environment
Exam Tips
✔ Learn the advantages of crop rotation.
✔ Revise modern sowing methods.
✔ Understand efficient irrigation practices.
✔ Remember the importance of weed control.
✔ Practice reasoning-based NCERT questions.
Quick Revision Notes
✔ Continuous cropping reduces soil fertility.
✔ Seed drills improve sowing accuracy.
✔ Remove weeds before they produce seeds.
✔ Drip irrigation conserves water.
✔ Sustainable farming protects natural resources.
✔ Balanced nutrient management improves yield.
✔ Scientific farming supports food security.
✔ Healthy soil produces healthy crops.
Common Mistakes Students Make
❌ Assuming seed drills and harvesters perform the same function.
❌ Thinking weeds become harmless after flowering.
❌ Confusing sustainable farming with using only fertilizers.
❌ Ignoring the importance of crop rotation.
❌ Believing over-irrigation always increases production.
Key Takeaways
✔ Growing the same crop repeatedly reduces soil fertility.
✔ Seed drills ensure accurate sowing.
✔ Early weed removal improves crop yield.
✔ Drip irrigation conserves water effectively.
✔ Sustainable farming protects soil and the environment.
✔ Scientific farming increases agricultural productivity.
✔ Responsible farming ensures long-term food security.
FAQs
1. Why should the same crop not be grown continuously?
Because it depletes specific nutrients from the soil and reduces fertility.
2. What is the main advantage of a seed drill?
It places seeds at the correct depth and spacing.
3. Why should weeds be removed early?
To prevent them from producing seeds and spreading.
4. Which irrigation method conserves the most water?
Drip irrigation.
5. What is sustainable farming?
It is farming that increases crop production while protecting natural resources and the environment.
Conclusion
Practice Set 12 strengthens students’ understanding of soil fertility, seed drills, weed management, efficient irrigation, and sustainable farming. These higher-order NCERT-based MCQs enhance reasoning ability, conceptual clarity, and exam readiness. Regular practice of these concepts will help students achieve excellent performance in school examinations, Olympiads, and scholarship tests.
Related links
- 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-1
- 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
- Class 8 Science Chapter 1 Crop Production and Management part-6
- Class 8 Maths Chapter 3 Understanding Quadrilaterals part-19
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