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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 methods, weeds, and crop care 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: Easy to Moderate
Based On: NCERT Latest Syllabus (2026)
Introduction
After learning about soil preparation and sowing, students should understand how crops receive nutrients and water for healthy growth. This practice set focuses on manure, fertilizers, irrigation, and weed control. These concepts are essential for understanding modern farming methods and frequently appear in school examinations.
What You Will Learn
✔ Importance of manure and fertilizers
✔ Different methods of irrigation
✔ Identification of weeds
✔ Weed control techniques
✔ Crop nutrition
✔ NCERT concept-based practice
✔ Exam-oriented revision
Why This Topic Is Important
Healthy crop growth depends on proper nutrition, timely irrigation, and effective weed control. Farmers use scientific methods to increase crop yield while protecting the environment. Understanding these concepts helps students build a strong foundation for Biology, Agriculture, and Environmental Science.
1. MCQ Questions with Detailed Solutions
Q1. What is the main purpose of adding manure to the soil?
A) To increase soil fertility
B) To kill insects
C) To reduce rainfall
D) To remove weeds
Answer
A) To increase soil fertility
Concept Behind This Question
Manure naturally enriches the soil with nutrients.
Step-by-Step Solution
Manure is prepared from decomposed plant and animal waste. It improves soil fertility, increases water-holding capacity, and supports the growth of beneficial microorganisms.
Therefore, the correct answer is A.
Exam Tip
Manure improves both soil fertility and soil structure.
Q2. Which of the following is a chemical substance used to provide nutrients to crops?
A) Compost
B) Fertilizer
C) Humus
D) Straw
Answer
B) Fertilizer
Concept Behind This Question
Fertilizers supply specific nutrients needed for crop growth.
Step-by-Step Solution
Fertilizers are manufactured chemical substances rich in nutrients such as nitrogen, phosphorus, and potassium. They help plants grow quickly and improve crop production.
Therefore, the correct answer is B.
Exam Tip
Fertilizer = Manufactured Nutrient Source
Q3. Which irrigation method helps save water by supplying it directly to plant roots?
A) Canal irrigation
B) Moat
C) Drip irrigation
D) Flood irrigation
Answer
C) Drip irrigation
Concept Behind This Question
Modern irrigation methods reduce water wastage.
Step-by-Step Solution
Drip irrigation delivers water drop by drop directly to the roots of plants. This minimizes evaporation and conserves water, making it ideal for areas with limited water supply.
Therefore, the correct answer is C.
Exam Tip
Drip Irrigation = Maximum Water Saving
Q4. What are unwanted plants growing along with crops called?
A) Shrubs
B) Weeds
C) Herbs
D) Saplings
Answer
B) Weeds
Concept Behind This Question
Weeds compete with crops for essential resources.
Step-by-Step Solution
Weeds are unwanted plants that grow naturally in crop fields. They compete with crops for water, sunlight, nutrients, and space, reducing crop yield.
Therefore, the correct answer is B.
Exam Tip
Weeds reduce crop production.
Q5. Which agricultural implement is commonly used to remove weeds and loosen the soil?
A) Hoe
B) Seed drill
C) Combine harvester
D) Sickle
Answer
A) Hoe
Concept Behind This Question
Different farming tools are designed for different agricultural activities.
Step-by-Step Solution
A hoe is used to remove weeds and loosen the upper layer of soil. It helps improve soil aeration while controlling unwanted plants.
Therefore, the correct answer is A.
Exam Tip
Hoe = Weeding + Loosening Soil
Important Formulas & Concepts
1. Manure
Natural organic material obtained from decomposed plant and animal waste.
Benefits:
- Improves soil fertility
- Increases water-holding capacity
- Adds humus to the soil
2. Fertilizers
Chemical substances rich in plant nutrients.
Examples:
- Urea
- NPK Fertilizer
- Ammonium Sulphate
3. Drip Irrigation
A modern irrigation system in which water is supplied drop by drop directly to plant roots.
4. Weeds
Unwanted plants growing with crops.
Example:
- Xanthium
- Parthenium
5. Hoe
An agricultural tool used for:
- Removing weeds
- Loosening soil
Related Practice Questions
- What are the advantages of manure over fertilizers?
- Why is drip irrigation considered an efficient irrigation method?
- What problems are caused by weeds?
- How does a hoe help farmers?
- Differentiate between manure and fertilizers.
Mini Quiz Challenge
Fill in the blanks
- Organic manure improves __________ fertility.
- __________ irrigation supplies water directly to plant roots.
- Unwanted plants growing in crop fields are called __________.
Answers
- Soil
- Drip
- Weeds
Exam Tips
✔ Learn the difference between manure and fertilizers.
✔ Remember modern irrigation methods.
✔ Revise examples of weeds.
✔ Understand why weed removal is necessary.
✔ Practice concept-based NCERT questions.
Quick Revision Notes
✔ Manure is organic.
✔ Fertilizers are chemical nutrient sources.
✔ Drip irrigation saves water.
✔ Weeds compete with crops.
✔ Hoe removes weeds.
✔ Healthy soil improves crop yield.
✔ Proper irrigation supports plant growth.
✔ Scientific farming increases food production.
Common Mistakes Students Make
❌ Confusing manure with fertilizers.
❌ Thinking all irrigation methods save equal amounts of water.
❌ Assuming weeds are useful plants.
❌ Mixing up hoe and seed drill.
❌ Forgetting that excessive fertilizer use may harm the environment.
Key Takeaways
✔ Manure naturally improves soil fertility.
✔ Fertilizers provide essential nutrients.
✔ Drip irrigation conserves water.
✔ Weeds reduce crop productivity.
✔ Hoe is used for weeding and loosening soil.
✔ Balanced crop care increases agricultural yield.
✔ Scientific farming supports sustainable agriculture.
FAQs
1. What is manure?
Manure is a natural organic substance prepared from decomposed plant and animal waste.
2. What is the main function of fertilizers?
They provide essential nutrients for faster and healthier plant growth.
3. What are weeds?
Weeds are unwanted plants that grow along with crops.
4. Which irrigation method saves the most water?
Drip irrigation is one of the most water-efficient irrigation methods.
5. Which tool is commonly used for removing weeds?
A hoe is commonly used to remove weeds and loosen the soil.
Conclusion
Practice Set 2 strengthens the understanding of important agricultural concepts such as manure, fertilizers, irrigation, and weed control. These topics play a vital role in crop production and are frequently tested in school exams, Olympiads, and scholarship examinations. Regular practice of concept-based MCQs will help students develop confidence and improve their scientific understanding.
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