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MCQ (Solution) - Crop Production Management | Science Class 8 PDF Download

Question 1:

What is the process of separating the grain from the straw after harvesting crops called?
Option A: Threshing
Option B: Sowing
Option C: Weeding
Option D: Irrigation
Answer: Option A

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Threshing is the method used to separate the edible grains from the straw, making it essential for preparing the grains for storage and cooking. 
  • Traditionally, farmers might use animals or manual methods, but modern machinery can expedite the process significantly. 
  • Different cultures have developed unique threshing techniques that reflect their agricultural practices and available resources.

ThreshingThreshing

Question 2:

Which of the following is a characteristic of damaged seeds?
Option A: They sprout quickly
Option B: They float on top of water
Option C: They have a higher yield
Option D: They require less sunlight
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Damaged seeds float on water due to air pockets that develop within them, making them less viable for planting. 
  • This characteristic can help farmers identify which seeds are not suitable for sowing. 
  • It's fascinating to note that some farmers use this method as a simple test for seed quality before planting.

Question 3:

What is the first step before growing crops?
Option A: Irrigation
Option B: Harvesting
Option C: Preparation of the soil
Option D: Sowing
Answer: Option C

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • The preparation of the soil involves several activities, including plowing and leveling, which are crucial for creating favorable conditions for plant growth. 
  • Proper soil preparation not only enhances the soil's fertility but also improves water retention. 
  • An additional fact is that different crops may require different soil preparation techniques, highlighting the importance of tailored agricultural practices.

Soil PreparationSoil Preparation

Question 4:

Which of the following methods helps conserve water in irrigation?
Option A: Flood irrigation
Option B: Drip irrigation
Option C: Surface irrigation
Option D: Manual watering
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Drip irrigation is an efficient method that delivers water directly to the roots of plants, minimizing evaporation and runoff. 
  • This method significantly reduces water wastage compared to traditional irrigation techniques. 
  • Interestingly, drip irrigation can increase crop yield and quality, making it a sustainable choice for farmers facing water scarcity.

Drip IrrigationDrip Irrigation

Question 5:

What is the primary benefit of crop rotation?
Option A: Increases water usage
Option B: Reduces soil fertility
Option C: Controls pests and diseases
Option D: Requires more manual labor
Answer: Option C

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Crop rotation helps control pests and diseases by disrupting their life cycles. 
  • This practice enhances soil health and fertility by preventing nutrient depletion associated with continuous cropping of the same species. 
  • Crop rotation can also improve overall biodiversity on a farm, which is beneficial for the ecosystem.

Question 6:

Which type of crops are sown with the onset of the monsoon?
Option A: Rabi crops
Option B: Kharif crops
Option C: Cash crops
Option D: Food crops
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Kharif crops are sown with the onset of the monsoon and harvested at the end of the rainy season. 
  • Examples include paddy and maize, which thrive in the warm, wet conditions typical of this season. 
  • Interestingly, the timing of sowing these crops is crucial for maximizing yield, making it a vital practice in agriculture.

Question 7:

What is organic manure made from?
Option A: Synthetic chemicals
Option B: Decomposed organic matter
Option C: Mineral fertilizers
Option D: Pesticides
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Organic manure is derived from decomposed organic matter, such as animal excreta and plant waste. 
  • This natural fertilizer enhances soil fertility and promotes healthy plant growth. 
  • Organic manure improves soil structure and moisture retention, contributing to sustainable agriculture.

ManureManure

Question 8:

Which method is used to remove unwanted plants from a crop field?
Option A: Sowing
Option B: Threshing
Option C: Weeding
Option D: Plowing
Answer: Option C

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Weeding involves removing unwanted plants that compete with crops for resources. 
  • This can be done manually or with chemicals known as weedicides. 
  • Regular weeding is crucial for maximizing crop yields and minimizing competition for nutrients. 

Question 9:

What happens if wheat is sown in the Kharif season?
Option A: The crop yields high returns
Option B: The crop fails due to unsuitable conditions
Option C: The crop matures faster
Option D: The crop requires less irrigation
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Wheat is not suitable for the Kharif season because it requires mild temperatures and frost-free conditions. 
  • Sowing wheat during this time can lead to poor yields due to high temperatures and excessive moisture. 
  • Interestingly, farmers need to be aware of seasonal changes to optimize their planting schedules for better crop success.

Question 10:

Which irrigation method mimics natural rainfall?
Option A: Drip irrigation
Option B: Surface irrigation
Option C: Sprinkler irrigation
Option D: Flood irrigation
Answer: Option C

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Sprinkler irrigation simulates natural rainfall by distributing water through pipes and nozzles. 
  • This method is beneficial for irrigating large areas and can be adjusted according to the crop's needs. 
  • A notable advantage is that well-designed sprinkler systems can significantly reduce water loss through evaporation, making them efficient for water conservation.

SprinklerSprinkler

Question 11:

What is the main disadvantage of continuous cropping?
Option A: Increased soil fertility
Option B: Decreased crop diversity
Option C: Higher yields
Option D: Less need for irrigation
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Continuous cropping leads to decreased crop diversity, which can result in pest and disease problems and nutrient depletion in the soil. 
  • Crop rotation is often recommended as a solution to maintain soil health and improve biodiversity. 

Question 12:

Which of the following statements about chemical fertilizers is true?
Option A: They are made from organic matter.
Option B: They are synthetic substances for plant growth.
Option C: They improve soil structure.
Option D: They are primarily used in organic farming.
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Chemical fertilizers are synthetic substances added to the soil to provide essential nutrients, helping boost crop yields.
  • However, over-reliance on chemical fertilizers can lead to soil degradation over time. 
  • The careful balance of nutrient application can significantly impact crop health and sustainability in farming.

Question 13:

What is the role of irrigation in agriculture?
Option A: To increase crop diversity
Option B: To provide artificial water supply to crops
Option C: To prepare soil for sowing
Option D: To control pests and diseases
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution: 

  • Irrigation is the artificial application of water to assist in the growth of crops, especially in areas with insufficient rainfall. 
  • It plays a critical role in ensuring consistent water supply, thus improving crop yields. 
  • Efficient irrigation methods can greatly enhance food security by maximizing agricultural productivity in water-scarce regions.

Question 14:


Which of the following describes organic manure?
Option A: Made from synthetic chemicals
Option B: Natural fertilizers from decomposed organic matter
Option C: Primarily used for pest control
Option D: Enhances water retention
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution:

  • Organic manure is derived from animal waste and plant matter.
  • It improves soil fertility and promotes healthy plant growth.

Question 15:

Which of the following is a primary method of preserving soil fertility?
Option A: Overgrazing
Option B: Crop rotation
Option C: Monoculture
Option D: Excessive use of chemical fertilizers
Answer: Option B

MCQ (Solution) - Crop Production Management | Science Class 8  View Answer

Solution:

  • Crop rotation involves alternating different types of crops in the same area across seasons.
  • This practice helps maintain soil fertility by:
    Restoring nutrients that specific crops may deplete.
    Reducing pest and disease cycles associated with monoculture.

The document MCQ (Solution) - Crop Production Management | Science Class 8 is a part of the Class 8 Course Science Class 8.
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FAQs on MCQ (Solution) - Crop Production Management - Science Class 8

1. What is crop production management?
Ans.Crop production management refers to the practices and techniques used to cultivate crops efficiently and sustainably. It involves planning, planting, nurturing, and harvesting crops to ensure maximum yield and quality while minimizing environmental impact.
2. What are the key factors affecting crop production?
Ans.Key factors affecting crop production include soil quality, climate conditions, water availability, pest and disease management, and the choice of crop varieties. Each of these factors plays a crucial role in determining the health and productivity of crops.
3. How can farmers improve soil fertility?
Ans.Farmers can improve soil fertility through practices such as crop rotation, adding organic matter like compost or manure, using cover crops, and applying fertilizers judiciously. These methods help enhance nutrient availability and soil structure.
4. What is the importance of irrigation in crop production?
Ans.Irrigation is vital in crop production as it ensures that plants receive adequate water, especially in regions with insufficient rainfall. Proper irrigation helps in maintaining consistent growth, improving yields, and managing drought conditions.
5. How can pests and diseases be managed in crop production?
Ans.Pests and diseases can be managed through integrated pest management (IPM), which includes monitoring pest populations, using resistant crop varieties, implementing biological control measures, and applying chemical controls when necessary. This approach minimizes damage while protecting the environment.
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