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Class 8 Exam  >  Class 8 Tests  >  Science Class 8  >  Test: Crop Production and Management- 3 - Class 8 MCQ

Test: Crop Production and Management- 3 - Class 8 MCQ


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10 Questions MCQ Test Science Class 8 - Test: Crop Production and Management- 3

Test: Crop Production and Management- 3 for Class 8 2024 is part of Science Class 8 preparation. The Test: Crop Production and Management- 3 questions and answers have been prepared according to the Class 8 exam syllabus.The Test: Crop Production and Management- 3 MCQs are made for Class 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Crop Production and Management- 3 below.
Solutions of Test: Crop Production and Management- 3 questions in English are available as part of our Science Class 8 for Class 8 & Test: Crop Production and Management- 3 solutions in Hindi for Science Class 8 course. Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free. Attempt Test: Crop Production and Management- 3 | 10 questions in 10 minutes | Mock test for Class 8 preparation | Free important questions MCQ to study Science Class 8 for Class 8 Exam | Download free PDF with solutions
Test: Crop Production and Management- 3 - Question 1
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What happens if weeds are allowed to produce flowers and seeds?

Detailed Solution for Test: Crop Production and Management- 3 - Question 1
If weeds are allowed to produce flowers and seeds, they will spread and increase in number, which can lead to more competition with crops for resources. Managing weeds before they flower and seed is crucial to prevent their proliferation and protect crop yields.
Test: Crop Production and Management- 3 - Question 2
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Read the following statements: 
i. Tilling uproots all unwanted plants.
ii. Tilling loosens the soil and mixes fertilisers.

Detailed Solution for Test: Crop Production and Management- 3 - Question 2

The process of loosing and turning of the soil is called tilling. Tilling uproots all unwanted plants and loosens the soil and mixes the organic fertilizers with soil.

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Test: Crop Production and Management- 3 - Question 3
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The soil matter formed by decayed organic matter is called

Detailed Solution for Test: Crop Production and Management- 3 - Question 3

Correct option is. Humus
The soil matter formed by decayed organic matter is called humus. Humus is a dark, organic material that forms in soil when plant and animal matter decays. The process of decomposition of organic matter involves bacteria, fungi, and other microorganisms consuming the dead material and breaking it down into simpler compounds. These compounds are then transformed into humus through a process called humification. Thus, the correct answer is 'Humus.

Test: Crop Production and Management- 3 - Question 4
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Why is it important to use organic manure in addition to chemical fertilizers?
Detailed Solution for Test: Crop Production and Management- 3 - Question 4
Organic manure is used to improve soil texture and nutrient content. While chemical fertilizers provide nutrients for immediate crop needs, organic manure enriches the soil over time by adding organic matter, which enhances soil structure and water retention.
Test: Crop Production and Management- 3 - Question 5
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What is the primary difference between rabi and kharif crops?
Detailed Solution for Test: Crop Production and Management- 3 - Question 5
Rabi and kharif crops are distinguished primarily by the seasons in which they are cultivated. Rabi crops are grown in winter, while kharif crops are planted during the monsoon season. This seasonal division helps in optimizing the growing conditions for different types of crops.
Test: Crop Production and Management- 3 - Question 6
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For farmers to decide which crop to be grown in the field depends upon :
Detailed Solution for Test: Crop Production and Management- 3 - Question 6

The decision of farmer to which crop to be grown in the field depends upon soil quality, water supply and weather condition along with investment ability of farmer.

Test: Crop Production and Management- 3 - Question 7
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Which practice helps in replenishing soil nutrients through crop rotation?
Detailed Solution for Test: Crop Production and Management- 3 - Question 7
Crop rotation involves growing different crops alternately to replenish soil nutrients. This practice helps in maintaining soil fertility and reducing the risk of soil depletion and pest infestations.
Test: Crop Production and Management- 3 - Question 8
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Which tool is commonly used to sow seeds at appropriate depths?
Detailed Solution for Test: Crop Production and Management- 3 - Question 8
A seed drill is commonly used to sow seeds at appropriate depths and distances. It ensures that seeds are planted uniformly and at the correct depth, which improves the likelihood of a good yield by optimizing seed placement.
Test: Crop Production and Management- 3 - Question 9
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What is the time frame for a cereal crop to mature before harvesting?
Detailed Solution for Test: Crop Production and Management- 3 - Question 9

Harvesting of a crop is an important task. The cutting of crop after it is mature is called harvesting. In harvesting, crops are pulled out or cut close to the ground. It usually takes 3 to 4 months for a cereal crop to mature.

Test: Crop Production and Management- 3 - Question 10
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What is the role of irrigation in crop production?
Detailed Solution for Test: Crop Production and Management- 3 - Question 10
Irrigation is the practice of supplying water to crops at appropriate intervals to ensure their healthy growth. Proper irrigation helps to maintain soil moisture and supports optimal crop development throughout the growing season.
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