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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 tilling, seed spacing, irrigation timing, crop rotation, and soil conservation 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: Moderate
Based On: NCERT Latest Syllabus (2026)
Introduction
Successful farming depends not only on growing crops but also on maintaining healthy soil and using scientific agricultural practices. This practice set introduces important concepts such as tilling, crop rotation, irrigation timing, and soil conservation. These reasoning-based MCQs are designed to improve conceptual understanding and exam performance.
What You Will Learn
✔ Importance of tilling the soil
✔ Proper spacing between plants
✔ Correct timing of irrigation
✔ Crop rotation
✔ Soil conservation
✔ NCERT concept-based revision
✔ Exam-oriented reasoning
Why This Topic Is Important
Healthy soil is the foundation of successful agriculture. Farmers use techniques like crop rotation, timely irrigation, and proper tilling to maintain soil fertility and increase crop production. These concepts help students understand sustainable farming and are commonly asked in examinations.
1. MCQ Questions with Detailed Solutions
Q1. Why is the soil turned and loosened before sowing seeds?
A) To increase weed growth
B) To improve root penetration and aeration
C) To reduce sunlight
D) To change the crop season
Answer
B) To improve root penetration and aeration
Concept Behind This Question
Loose soil provides better conditions for plant growth.
Step-by-Step Solution
Turning and loosening the soil allows roots to penetrate deeply, improves air circulation, and helps water and nutrients reach plant roots more effectively.
Therefore, the correct answer is B.
Exam Tip
Loose soil = Healthy root growth.
Q2. Why is proper spacing maintained between plants during sowing?
A) To increase competition among plants
B) To ensure each plant gets enough sunlight, water, and nutrients
C) To reduce soil fertility
D) To increase weed growth
Answer
B) To ensure each plant gets enough sunlight, water, and nutrients
Concept Behind This Question
Overcrowding affects healthy plant growth.
Step-by-Step Solution
When plants are sown at the correct distance, each receives adequate sunlight, air, water, and nutrients. This reduces competition and improves crop yield.
Therefore, the correct answer is B.
Exam Tip
Proper spacing = Better crop growth.
Q3. Why should farmers avoid irrigating fields during the hottest part of the day?
A) Water evaporates quickly.
B) Crops stop growing permanently.
C) Soil becomes more fertile.
D) Seeds begin to float.
Answer
A) Water evaporates quickly.
Concept Behind This Question
Proper timing of irrigation saves water.
Step-by-Step Solution
High temperatures increase evaporation. Irrigating early in the morning or evening reduces water loss and allows more water to reach plant roots.
Therefore, the correct answer is A.
Exam Tip
Morning or evening irrigation conserves water.
Q4. What is the main benefit of crop rotation?
A) It increases soil fertility and reduces nutrient depletion.
B) It permanently removes insects.
C) It eliminates irrigation.
D) It changes Kharif crops into Rabi crops.
Answer
A) It increases soil fertility and reduces nutrient depletion.
Concept Behind This Question
Different crops use different nutrients from the soil.
Step-by-Step Solution
Growing different crops in succession prevents excessive depletion of the same nutrients. It also improves soil fertility and helps reduce certain pests and diseases.
Therefore, the correct answer is A.
Exam Tip
Crop Rotation = Healthy Soil.
Q5. Which farming practice mainly helps protect fertile topsoil from being washed away?
A) Burning crop residues
B) Soil conservation
C) Deep flooding
D) Overgrazing
Answer
B) Soil conservation
Concept Behind This Question
Topsoil contains most of the nutrients required for plant growth.
Step-by-Step Solution
Soil conservation includes practices that prevent erosion and protect the nutrient-rich top layer of soil, ensuring long-term agricultural productivity.
Therefore, the correct answer is B.
Exam Tip
Protect the topsoil to protect crop productivity.
Important Formulas & Concepts
1. Tilling
The process of loosening and turning the soil before sowing.
Benefits:
- Better aeration
- Healthy root growth
- Improved water absorption
2. Proper Seed Spacing
Advantages:
- Less competition
- Better sunlight
- Healthy growth
- Higher yield
3. Correct Irrigation Timing
- Early morning
- Evening
These timings reduce evaporation losses.
4. Crop Rotation
Growing different crops one after another on the same field to maintain soil fertility.
5. Soil Conservation
Methods used to prevent soil erosion and protect fertile topsoil.
Related Practice Questions
- Why is tilling important before sowing?
- Explain the advantages of maintaining proper spacing between plants.
- Why is irrigation usually done in the morning or evening?
- What is crop rotation?
- Why should fertile topsoil be protected?
Mini Quiz Challenge
Fill in the blanks
- Turning the soil before sowing is called __________.
- Crop __________ helps maintain soil fertility.
- Irrigation should preferably be done during the __________ or evening.
Answers
- Tilling
- Rotation
- Morning
Exam Tips
✔ Learn the advantages of tilling.
✔ Revise the purpose of crop rotation.
✔ Remember the best time for irrigation.
✔ Understand the importance of soil conservation.
✔ Practice reasoning-based NCERT questions.
Quick Revision Notes
✔ Tilling improves aeration.
✔ Proper spacing reduces competition.
✔ Morning irrigation saves water.
✔ Crop rotation maintains soil fertility.
✔ Soil conservation prevents erosion.
✔ Healthy soil increases crop production.
✔ Scientific farming protects natural resources.
✔ Good farming practices improve long-term productivity.
Common Mistakes Students Make
❌ Thinking closely spaced plants produce higher yields.
❌ Confusing tilling with harvesting.
❌ Believing irrigation timing does not matter.
❌ Assuming crop rotation is only used to increase production.
❌ Ignoring the importance of protecting topsoil.
Key Takeaways
✔ Tilling prepares the soil for healthy root growth.
✔ Proper spacing ensures better crop development.
✔ Morning or evening irrigation reduces evaporation.
✔ Crop rotation maintains soil fertility.
✔ Soil conservation protects fertile land.
✔ Scientific farming improves sustainable agriculture.
✔ Healthy soil is essential for better crop yield.
FAQs
1. What is tilling?
Tilling is the process of loosening and turning the soil before sowing seeds.
2. Why is proper spacing important?
It allows each plant to receive sufficient sunlight, water, air, and nutrients.
3. Why is irrigation done in the morning or evening?
To reduce water loss through evaporation.
4. What is crop rotation?
It is the practice of growing different crops in succession to maintain soil fertility.
5. Why is soil conservation necessary?
It prevents soil erosion and protects nutrient-rich topsoil.
Conclusion
Practice Set 6 introduces students to advanced agricultural practices such as tilling, crop rotation, irrigation timing, and soil conservation. These concepts are essential for understanding sustainable farming and improving agricultural productivity. Regular practice of these NCERT-based MCQs will strengthen conceptual clarity and help students perform well in school examinations, Olympiads, and scholarship tests.
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