Unit-introduction to Beef Production Lesson 7 Question Answer Key
NCERT Solutions for Class 8 Science Chapter 1 – Gratuitous PDF Download
NCERT Solutions for Class 8 Scientific discipline Affiliate ane Crop Product and Management guides you with the answers to the questions given in the textbook. Class viii is an important phase of the student'southward life as they are introduced to many new concepts that are essential to fix strong nuts for the topics to be taught in Class 9. To score good marks in the Class eight test students should solve the exemplar questions provided at the end of each chapter in Grade 8 NCERT books.
Solving NCERT questions volition aid you lot in grasping the content in the Crop Production and Direction chapter in a ameliorate style. BYJU'S presents the important actress questions at the finish of each affiliate according to the updated latest Class 8 CBSE Syllabus. These NCERT Solutions for Form eight ScienceAffiliate 1 will help you in scoring skilful marks as they cover of import concepts in different patterns like MCQs and short answer questions, worksheets and more than. NCERT Solutions for Grade 8 Scientific discipline Chapter 1 is provided hither for improve understanding and description of the subject.
Download PDF of NCERT Solutions for Grade 8 Science Chapter 1 Crop Production and Management
Access Answers to NCERT Class 8 Science Affiliate 1 Crop Production and Direction
Practise Questions
1. Select the correct word from the following list and fill in the blanks.
float, water, crop, nutrients, preparation
(a) The aforementioned kind of plants grown and cultivated on a big scale at a identify is called _____________.
(b) The get-go step before growing crops is _____________ of the soil.
(c) Damaged seeds would _____________ on top of water.
(d) For growing a crop, sufficient sunlight and _____________ and _____________ from the soil are essential.
Soln:
(a) The same kind of plants grown and cultivated on a large scale at a place is chosen theingather.
(b) The first stride earlier growing crops is thepreparation of the soil.
(c) Damaged seeds would float on superlative of the h2o.
(d) For growing a crop, sufficient sunlight and h2o and nutrients from the soil are essential.
2. Match items in column A with those in column B.
| A | B |
| (i) Kharif crops | (a) Food for cattle |
| (ii) Rabi crops | (b) Urea and superphosphate |
| (3) Chemical fertilisers | (c) Animate being excreta, cow dung urine and constitute wastes |
| (iv) Organic manure | (d) Wheat, gram, pea |
| (e) Paddy and maize |
sol:-
| (i) Kharif crops. | (eastward) Paddy and maize. |
| (two) Rabi crops. | (d) Wheat, gram, pea. |
| (iii) Chemical fertilisers. | (b) Urea and superphosphate. |
| (iv) Organic manure. | (c) Animal excreta, moo-cow dung urine and plant wastes. |
iii. Give two examples of each.
(a) Kharif crop
(b) Rabi ingather
Soln:
Kharif crops- Paddy and maize
Rabi crops- Wheat and Pea
4. Write a paragraph in your own words on each of the following.
(a) Preparation of soil
(b) Sowing
(c) Weeding
(d) Threshing
Soln:
a) Preparation of the soil is the first step in agronomics. Preparation of the soil is done to loosen the soil, which is essential for the root penetration into the soil. This allows the roots to exhale easily. Loosening of the soil allows the growth of earthworms and microorganisms, which will assistance to keep the soil fertile by adding humus to the soil. Loosening of soil likewise brings nutrient-rich soil to the top layer, which is essential for the growth of plants.
b) Sowing is an of import procedure in crop production. Get-go, salubrious seeds are selected before sowing. After selecting healthy seeds sowing is done by either traditional methods or by using equipment'due south seed drill.
c) Removal of unnecessary plants from the field is called weeding. Weeds compete with crop plants for nutrients and water. This will reduce the yield of the desired crops. Weeds likewise interfere while harvesting and gets mixed with crops. Some weeds are poisonous to animals and humans. Tilling is a mutual method which helps removal of weeds before sowing crops, manual methods like physical removal of plants are used to remove weeds. Weedicides are sprayed to get rid of weeds, but this method may affect the health of farmers because of chemicals used equally weedicides.
d) Process of separating the chaff from the ingather is known equally threshing. Threshing is carried by a machine called 'combine' which is a harvester besides as a thresher. Threshing is also washed by winnowing where to blow of wind is used to dissever the chaff from crops.
5. Explicate how fertilisers are different from manure.
Soln:
| Fertilizers | Manure |
| Fertilizer is an inorganic substance. | Manure is an organic substance. |
| Fertilizers are prepared artificially. | Manure is obtained past decomposition of brute, plant and homo waste. |
| Prepared in factories. | Prepared in fields. |
| Does not provide Humus to the soil. | Provide humus to the soil. |
| Rich in found nutrients. | Relatively less plant nutrients. |
| Long term usage has agin effects on soil. | Long term usage improves soil fertility. |
six. What is irrigation? Draw two methods of irrigation which conserve water.
Soln:
The supply of h2o to crops at regular intervals is called irrigation. Methods of irrigation which conserve water are
a) Drip Irrigation: Hither the water goes driblet by drop direct into the roots this method is very useful equally it conserves the water and also helps in avoiding weeds.
b) Sprinkler system: This method is in use in mainly uneven land where sufficient water is not available. The perpendicular pipes, having rotating nozzles on acme, are joined to the main pipeline at regular intervals. When water is allowed to menstruum through the main pipe under pressure with the help of a pump, information technology escapes from the rotating nozzles. Information technology gets sprinkled on the crop as if it is raining.
7. If wheat is sown in the Kharif season, what would happen? Discuss.
Soln:
Wheat crops may become destroyed if sown in Kharif season because of unfavourable temperature, pests and adaptable atmospheric condition for the plants to grow. Kharif come during the rainy season, hence information technology is not a wise thought to abound wheat in Kharif season.
eight. Explain how soil gets afflicted by the continuous plantation of crops in a field.
Soln:
Plants require nutrients for their growth. Without optimum nutrients plants volition die. Continuous plantation of crops results in depletion of sure nutrients like Nitrogen, Phosphorus, Potassium etc. This results in the decrease of yield due to loss of nutrients hence there should be a gap between crops in society to get a adept yield.
9. What are weeds? How can we control them?
Soln:
In a field many other undesirable plants may grow naturally forth with the ingather. These undesirable plants are called weeds. Weeds can exist controlled by methods called weeding. Tilling earlier sowing of crops helps in uprooting and killing of weeds, which may so dry out up and get mixed with the soil. Weeds are as well controlled by using certain chemicals, called weedicides.
10. Arrange the post-obit boxes in proper order to make a menstruation chart of sugarcane crop production.
Soln:
eleven. Consummate the following word puzzle with the help of clues given below.
Down
1. Providing h2o to the crops.
2. Keeping crop grains for a long fourth dimension under proper conditions.
five. Sure plants of the same kind grown on a large scale.
Across
3. A machine used for cutting the matured crop.
4. A rabi crop that is also ane of the pulses.
6. A process of separating the grain from chaff.
Soln:
Class viii Science NCERT Solutions for Affiliate 1 – Crop Product and Management
BYJU'S NCERT Solutions for Class 8 Science is developed by individual subject field matter experts according to the latest CBSE syllabus and guidelines. Referring to these NCERT Solutions for Class eight will help reach a firm grip over the cardinal concepts and topics across subjects. Regular usage of these solutions besides helps boost confidence among the students.
The topics covered in Affiliate 1 of NCERT Class viii Science are given beneath:
| Department Proper name | Topic |
| ane.1 | Agricultural Practices |
| 1.2 | Bones Practices of Ingather Production |
| 1.3 | Preparation of Soil |
| 1.4 | Sowing |
| 1.v | Adding Manure and Fertilizers |
| 1.six | Irrigation |
| i.vii | Protection from Weeds |
| 1.eight | Harvesting |
| 1.ix | Storage |
| 1.10 | Food and Animals |
Students can utilize the NCERT Solutions for Class 8 Scientific discipline Chapter 1 for whatsoever quick references to cover complex topics and also to larn the correct answers to exercise questions of the Class eight Science NCERT Textbook.
BYJU'South is India'southward largest K-12 learning app with meridian-notch teachers from across the nation with excellent didactics skills. Find notes, question papers for diverse other subjects like Mathematics, Biology, Chemistry and many competitive exams besides. Enjoy learning with a nifty experience. Stay tuned to know more almost NCERT Solutions and preparation tips. To know more than about NCERT Solutions, you tin annals with BYJU'South or download our app for simple and interesting content.
Frequently Asked Questions on NCERT Solutions for Class viii Science Chapter 1
What is the concept of baste irrigation and sprinkler system in the NCERT Solutions for Class 8 Science Affiliate 1?
Drip Irrigation: Hither the water goes drop past driblet directly into the roots. This method is very useful as information technology conserves the water and too helps in fugitive weeds. Sprinkler organization: This method is in use in mainly uneven state where sufficient water is not available. The perpendicular pipes, having rotating nozzles on top, are joined to the main pipeline at regular intervals. When water is allowed to flow through the primary pipe nether pressure with the help of a pump, it escapes from the rotating nozzles. It gets sprinkled on the crop as if information technology is raining. To understand these concepts in a better manner, students are recommended to refer to the chapter wise solutions created by the subject thing experts at BYJU'S. The solutions are prepared after conducting a vast enquiry on each concept to boost the exam training of students.
List out the topics and subtopics covered in the NCERT Solutions for Course viii Science Chapter 1.
The topics and subtopics covered in the NCERT Solutions for Grade viii Scientific discipline Affiliate 1 are –
1.1 Agronomical Practices
1.ii Basic Practices of Crop Production
1.3 Preparation of Soil
1.iv Sowing
1.5 Calculation Manure and Fertilizers
1.6 Irrigation
i.vii Protection from Weeds
1.8 Harvesting
1.9 Storage
i.10 Nutrient and Animals
What are the central features of the NCERT Solutions for Class 8 Science Chapter 1?
The primal features of the NCERT Solutions for Class 8 Science Chapter 1 are –
one. Students will become enough do in balancing dissimilar kinds of equations.
2. The solutions help students to write the chemic equations effortlessly.
3. Provides a lot of do questions of different difficulty levels to face the board exams without fear.
iv. Each and every question is answered in a comprehensive way to help students with their test preparation.
Source: https://byjus.com/ncert-solutions-class-8-science/chapter-1-crop-production-and-management/
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