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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 reasoning-based MCQs on seed germination, irrigation, fertilizers, weeds, and storage with detailed solutions for CBSE, State Board, Olympiad, and scholarship exam preparation.
Do You Know
Chapter Information
Subject: Science
Class: 8
Chapter: Crop Production and Management
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Moderate to Difficult
Based On: NCERT Latest Syllabus (2026)
Introduction
Crop production involves several scientific practices that ensure healthy plant growth and maximum yield. Understanding the reasons behind these practices helps students apply concepts instead of simply memorizing facts. This practice set contains reasoning-based MCQs covering seed germination, irrigation, fertilizers, weed management, and grain storage.
What You Will Learn
✔ Conditions required for seed germination
✔ Balanced use of fertilizers
✔ Scientific weed management
✔ Importance of proper irrigation
✔ Safe grain storage practices
✔ NCERT concept-based revision
✔ Higher-order reasoning questions
Why This Topic Is Important
Farmers must understand the science behind every agricultural practice to obtain better crop yield. Concepts such as germination, nutrient management, irrigation, and storage are frequently tested in school examinations and form the basis of modern agriculture.
1. MCQ Questions with Detailed Solutions
Q1. Which condition is NOT essential for seed germination?
A) Moisture
B) Air
C) Suitable temperature
D) Bright sunlight
Answer
D) Bright sunlight
Concept Behind This Question
Seeds require specific conditions to germinate.
Step-by-Step Solution
Seed germination requires moisture, oxygen (air), and a suitable temperature. Sunlight is generally not essential for the germination process, although young seedlings need light after germination for photosynthesis.
Therefore, the correct answer is D.
Exam Tip
Germination needs Water + Air + Suitable Temperature.
Q2. Which nutrient present in fertilizers mainly promotes healthy leaf growth?
A) Nitrogen
B) Calcium
C) Sodium
D) Chlorine
Answer
A) Nitrogen
Concept Behind This Question
Different nutrients perform different functions in plant growth.
Step-by-Step Solution
Nitrogen helps plants produce green leaves and promotes vegetative growth. Deficiency of nitrogen often causes yellowing of leaves and poor plant growth.
Therefore, the correct answer is A.
Exam Tip
Nitrogen = Leaf Growth
Q3. Which of the following is a major disadvantage of weeds?
A) They improve grain quality.
B) They compete with crops for nutrients, water, and sunlight.
C) They increase crop production.
D) They prevent insect attacks completely.
Answer
B) They compete with crops for nutrients, water, and sunlight.
Concept Behind This Question
Weeds reduce crop productivity.
Step-by-Step Solution
Weeds absorb water, minerals, and nutrients from the soil before crops can use them. They also block sunlight and reduce the space available for crop plants.
Therefore, the correct answer is B.
Exam Tip
Weeds = Competition for Resources
Q4. Which method helps reduce water wastage during irrigation?
A) Flooding the entire field unnecessarily
B) Watering fields during hot afternoons
C) Using modern irrigation systems such as drip irrigation
D) Irrigating fields continuously without checking soil moisture
Answer
C) Using modern irrigation systems such as drip irrigation
Concept Behind This Question
Efficient irrigation conserves water.
Step-by-Step Solution
Drip irrigation supplies water directly to plant roots, minimizing evaporation and runoff. It is one of the most efficient irrigation methods.
Therefore, the correct answer is C.
Exam Tip
Modern Irrigation = Water Conservation
Q5. Which storage condition best protects grains from fungal growth?
A) High humidity
B) Wet storage containers
C) Dry and moisture-free storage
D) Open storage during rainfall
Answer
C) Dry and moisture-free storage
Concept Behind This Question
Moisture encourages fungal growth.
Step-by-Step Solution
Fungi grow rapidly in moist conditions. Drying grains before storage and keeping them in moisture-free containers prevents fungal infection and spoilage.
Therefore, the correct answer is C.
Exam Tip
Moisture-Free Storage = Safe Grains
Important Formulas & Concepts
1. Conditions Required for Seed Germination
- Moisture
- Air (Oxygen)
- Suitable Temperature
Sunlight is generally not essential for germination.
2. Nitrogen
Functions:
- Promotes green leafy growth
- Essential for protein formation
- Improves vegetative development
3. Effects of Weeds
- Compete for nutrients
- Compete for water
- Reduce crop yield
- Occupy growing space
4. Water Conservation in Agriculture
Modern irrigation methods:
- Drip Irrigation
- Sprinkler Irrigation
5. Safe Grain Storage
Protect grains from:
- Moisture
- Fungi
- Insects
- Rodents
Related Practice Questions
- What conditions are necessary for seed germination?
- What is the role of nitrogen in plants?
- How do weeds affect crop production?
- Why is drip irrigation considered efficient?
- Why should grains be protected from moisture?
Mini Quiz Challenge
Fill in the blanks
- Seed germination requires moisture, air, and suitable __________.
- __________ promotes healthy leaf growth.
- Fungi grow rapidly in the presence of __________.
Answers
- Temperature
- Nitrogen
- Moisture
Exam Tips
✔ Remember the conditions required for germination.
✔ Revise the functions of nitrogen.
✔ Learn the harmful effects of weeds.
✔ Understand water-saving irrigation methods.
✔ Focus on proper grain storage.
Quick Revision Notes
✔ Moisture, air, and temperature are essential for germination.
✔ Nitrogen promotes leafy growth.
✔ Weeds reduce crop productivity.
✔ Drip irrigation conserves water.
✔ Moisture causes fungal growth in grains.
✔ Dry storage improves grain safety.
✔ Scientific irrigation saves resources.
✔ Healthy farming practices improve crop yield.
Common Mistakes Students Make
❌ Thinking sunlight is essential for seed germination.
❌ Confusing nitrogen with irrigation methods.
❌ Assuming weeds help crops grow.
❌ Believing all irrigation methods conserve equal amounts of water.
❌ Ignoring moisture while storing grains.
Key Takeaways
✔ Seeds require moisture, air, and suitable temperature for germination.
✔ Nitrogen promotes healthy leaf growth.
✔ Weeds compete with crops for essential resources.
✔ Drip irrigation minimizes water wastage.
✔ Dry storage prevents fungal damage.
✔ Scientific farming improves productivity.
✔ Proper crop management ensures better harvests.
FAQs
1. Is sunlight necessary for seed germination?
No. Most seeds require moisture, air, and a suitable temperature for germination.
2. What is the function of nitrogen in plants?
Nitrogen promotes healthy green leaf growth and overall vegetative development.
3. Why are weeds harmful?
They compete with crops for water, nutrients, sunlight, and space.
4. Which irrigation method saves the most water?
Drip irrigation is one of the most water-efficient methods.
5. Why should grains be stored in dry conditions?
Dry storage prevents fungal growth, insect damage, and spoilage.
Conclusion
Practice Set 7 strengthens students’ understanding of seed germination, plant nutrition, irrigation, weed management, and grain storage. These reasoning-based NCERT MCQs improve conceptual clarity and help students prepare effectively for school exams, Olympiads, and scholarship examinations. Regular practice is the key to mastering scientific agricultural practices.
Related links
- Class 8 English Chapter 1 Another Chance part-2
- Class 8 Science Chapter 1 Crop Production and Management part-3
- Class 8 Social Science Chapter 1 How, When and Where part-4
- Class 8 Maths Chapter 3 Understanding Quadrilaterals part-16
- Class 8 Social Science Chapter 1 How, When and Where part-3
- Class 8 Science Chapter 1 Crop Production and Management part-2
- Class 8 Maths Chapter 3 Understanding Quadrilaterals part-15
- Class 8 English Chapter 1 Another Chance part-1
- Class 8 Social Science Chapter 1 How, When and Where part-2
- Class 8 Science Chapter 1 Crop Production and Management part-1
- Class 8 Maths Chapter 3 Understanding Quadrilaterals part-14
- Class 8 Science Chapter 1 Crop Production and Management
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