Crop Production and Management — Question 3
Back to all questionsQuestion 3
Give two examples of each.
(a) Kharif crop
(b) Rabi crop
(a) Kharif crop: Cotton, Soyabean
(b) Rabi crop: Wheat, Mustard
Key Concepts Covered
This question tests your understanding of the following concepts from the chapter Crop Production and Management: Question, Kharif, Crop, Rabi, Crop Production and Management, Science. These are fundamental topics in Science that students are expected to master as part of the CBSE Class 8 curriculum.
A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This Question
Read the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to Remember
- Read the question carefully and identify all parts before answering.
- Use the terminology specific to this subject and chapter.
- Review the textbook content for this chapter before attempting questions.
- Practice writing concise, well-structured answers within time limits.
Practice more questions from Crop Production and Management — Science, Class 8 CBSE
Chapter Overview: Crop Production and Management
This chapter covers the complete agricultural cycle from soil preparation to grain storage. Students learn about Kharif and Rabi crops, modern and traditional irrigation methods, the difference between manure and fertiliser, and how food grains are harvested, threshed, and stored. Animal husbandry is introduced as a complementary food production practice.
Board Exam Weightage: 5-7 marks | Difficulty: Moderate
Key Formulas & Concepts
| Concept | Details |
|---|---|
| Kharif Crops | Sown in June-July (monsoon season); harvested in September-October. Examples: paddy, maize, soybean, cotton |
| Rabi Crops | Sown in October-November (winter); harvested in March-April. Examples: wheat, gram, pea, mustard |
| Drip Irrigation | Water delivered drop by drop at plant roots; most water-efficient method |
| Sprinkler Irrigation | Water sprayed through rotating nozzles; suitable for uneven land |
Must-Know Concepts
- Soil preparation loosens soil and brings nutrients to the surface
- Seed drill ensures uniform spacing and depth of sowing
- Manure is organic (plant/animal waste), fertiliser is chemical (NPK)
- Weeds compete with crops for water, nutrients, and sunlight
- Combine harvester does harvesting and threshing simultaneously
- Grains must be dried to reduce moisture before storage
Manure vs Fertiliser
| Feature | Manure | Fertiliser |
|---|---|---|
| Source | Plant/animal waste (organic) | Chemical factories (inorganic) |
| Nutrients | All nutrients + humus | Specific (N, P, or K) |
| Soil Effect | Improves soil texture and water-holding | No improvement; may degrade soil over time |
| Speed | Slow-acting, long-lasting | Fast-acting, short-term |
| Pollution | None | Excessive use causes soil/water pollution |
Common Mistakes to Avoid
- Confusing Kharif and Rabi crops and their growing seasons
- Thinking manure and fertiliser are interchangeable
- Not knowing the difference between threshing and winnowing
- Forgetting that irrigation means artificial water supply, not rainfall
Scoring Tips
- Learn crop classification with seasonal memory aids
- Draw flowcharts of the complete crop production process
- Compare irrigation methods in a table for quick revision
- Practice NCERT in-text questions for definitions
Frequently Asked Questions
Q: How many marks does this chapter carry in the exam?
A: Approximately 5-7 marks in the annual exam.
Q: What question types are commonly asked?
A: MCQs (1 mark), Very Short Answer (2 marks), Short Answer (3 marks), and Long Answer / Diagram (5 marks).
Q: Is this chapter important for competitive exams?
A: Yes, concepts from this chapter appear in NTSE, Olympiad, and other science competitions.