The process of taking out threads from the cocoon for use as silk is called reeling the silk. This is just a collection of frequently asked questions in school exams and all important extra questions from NCERT Books of Class 7 Science Chapter 3 Fibre to Fabric. Anthrax. And the fibres now as wool are ready to be oven. Wool industry is an important means of livelihood for many people in our country. What are burrs? 1800-102-5301 Login Or … Name one disease that occurs in sheep. Important NCERT Questions Class 7 Science Chapter 2. Once the sheep have developed a thick growth of hair, hair is shaved off for getting wool. Students can utilize these solutions for adapting to and solving complex problems and completely understand the concepts explained by different topics. Weight (in kg) at […] During these movements of the head, the caterpillar secretes fibre made of a protein which hardens on exposure to air and becomes silk fibre. The cocoons are kept under the sun or boiled or exposed to steam. Name of breed Quality of wool Rampur bushair Brown fleece Nali Carpet wool Bakharwal For woollen shawls Marwari Coarse wool. Apart from grazing sheep, rearers also feed them on a mixture of pulses, corn, jowar, oil cakes (material left after taking out oil from seeds) and minerals. For getting pure silk, it can be rear in any sort of climate while artificial silk created in definite chemical and temperature. What is the importance of shearing process for getting wool? Besides of these, burning of natural silk fabric gives a smell like burning of hair while artificial silk fabric gives a smell like burning of paper. You can also download NCERT Solutions for Class 7 Maths to … NCERT Solutions for Class 7 Science for academic year 2020-21 are given here in a chapter-wise format, according to the latest CBSE guidelines. In the rearing of silkworms, after how many days the caterpillar stop to eating the leaves of mulberry tree? In Class 7 Science Chapter 3 Extra Questions, all the keywords are covered in the form of questions and explanation of 7th standard science. In this time, caterpillar secretes fibre made of a protein which hardens on exposure to air and becomes silk fibre. In which areas are yaks found in plenty? The female silk moth lays eggs, from which hatch larvae which are called caterpillars or silkworms. mulberry silk, tassar silk etc.) They are the smallest visible unit of a fabric and denoted by being extremely long in relation to their width. Toll Free No. Pure silk fibre made of protein while artificial made of chemical substances. Silkworms spin the silk fibres. Name the most common silk moth found in India. All our solutions for CBSE Class 7 are prepared in accordance with the latest CBSE syllabus, and they are amended from time to time. Silk fibres are then spun into silk threads. The various steps for processing fibres into wool are as follows: Shearing: The first step is to remove fleece of the sheep along with thin layer of skin. Separating burrs: Burrs are small fluffy fibres which are picked out from the hair. After 25 to 30 days, the caterpillars stop eating and move to a tiny chamber of bamboo in the tray to spin cocoons and small racks or twigs may be provided in the trays to which cocoons get attached. Discuss the life stages of silkworms from “Pupa to Cocoon”. Access Answers of NCERT Solutions for Class 7 Science Chapter 3 – Fiber to Fabric. The small fluffy fibres, called burrs, are picked out from the hair. Free Chapter wise NCERT Solutions for Class 7 by Extramarks allow students to understand a tough topic with an easier explanation. Solution: If there are no platelets, then blood … This is done when mulberry trees bear a fresh crop of leaves. Answer: Tibet and Ladakh. Knowing the Answers to the Extra Questions for Class 8 Social Science History Chapter 7 Weavers, Iron Smelters and Factory Owners helps students to attempt the exam with confidence. This covering is known as cocoon. NCERT Solutions for Class 7 Science Chapter 4 - Heat. Answer: We have Provided Fibre to Fabric Class 7 Science MCQs Questions with Answers to help students understand the concept very well. NCERT Solutions 2020-21 are based on latest NCERT Books for the academic session 2020–2021. In winter, sheep are kept indoors and fed on leaves, grain and dry fodder. Mention some several breeds of sheep that are found in different parts of our country. The larvae, called caterpillars or silkworms, eat mulberry leaves day and night and increase enormously in size. Kashmiri goat. They are also fed on a mixture of pulses, corn, jowar, oil cakes and minerals. These animals are fed, provided, shelters and are bred for better yield like milk, meat, wool etc. The students have to complete all the chapter in their 1 year of study. The most common silk moth is the mulberry silk moth. How is silk processed? NCERT Extra Questions for Class 7 Science Chapter 4 Food Where Does it Come From with Answers will help to score more marks in your CBSE Board Exams. Sheep, goat, yak. For any further suggestions, users are welcome. Answer: / By Prasanna. Stay connected to our site to avail latest updates on Extra Questions for Various Classes instantly. NCERT Grade 7 Science, Chapter 3, Heat deals with the basic concepts that a student would require to gain knowledge about heat and its associated principles. We have Provided Fibre to Fabric Class 7 Science MCQs Questions with Answers to help students understand the concept very well. NCERT Solutions for Class 7 Science Chapter 2 Nutrition in Animals or अध्याय 2 प्राणियों में पोषण in Hindi Medium free to download in PDF file or View online. The cocoons are kept under the sun or boiled or exposed to steam. Then it swings its head from side to side in the form of the figure of eight (8). You must be familiar with the following nursery rhymes: (i) ‘Baa baa black sheep, have you any wool.’ (ii) ‘Mary had a little lamb, whose fleece was white as snow.’ Answer the following: (a) Which parts of the black sheep have wool? The larvae, called caterpillars or silkworms, eat day and night and increase enormously in size. What is the most common silk moth? Practicing these NCERT Social Science MCQs for Class 7 CBSE with Answers Pdf will guide students to do a quick revision for all the concepts present in each chapter and prepare for final exams. This enables sheep to survive without their protective coat of hair. The eggs are warmed to a suitable temperature for the larvae to hatch from eggs. Which animal provides Pashmina shawls? Exercise Questions . Which types of food taken by the “mulberry silk moth”? NCERT Solutions for Class 7 Science Chapter 11 – Transportation in Animals and Plants is one of the important study materials for the students of class 7. It contains solved questions of all the topics from the NCERT Class 7 textbook. Students can get how to tackle different questions easily by solving the Extra Questions for Class 7 Science Question … Download NCERT Books and Offline Apps 2020-21 based on new CBSE Syllabus 2020-2021. The fine hair provides the fibres for making wool. Answer: Wool yielding animals are sheep, yak, llama, […] Question 3. cows, buffaloes, goats etc.) What is selective breeding? Discuss the process of “rearing of silkworms” which is done by the farmers. Pure silk fibre is a natural fibre while artificial silk created by human. They are mainly reared in areas with low rainfall. If cocoon is not boiled then the silkworm will come out the fibres would not get enough long fibres to make the silk. Dyeing: The fibres are dyed in various colours, as the original colour of fleece are usually black white or brown. Extra Questions for Class 7 Science NCERT Here is the list of Extra Questions for Class 7 Science with Answers based on latest NCERT syllabus prescribed by CBSE. The worms are then kept in clean bamboo trays along with freshly chopped mulberry leaves. Air is a poor conductor of heat. Fibre to Fabric Class 7 Extra Questions and Answers Science Chapter 3 PDF are solved by experts and will guide students in the right direction. The fibres are scoured again and dried. October 14, 2020. Question 1. Write about the food of sheep. Students can get how to tackle different questions easily by solving the Extra Questions for Class 7 Science Question bank on a … The exact time of discovery of silk is perhaps unknown. Soil. How is woollen cloth made after scouring hair of sheep? NCERT Solutions for Class 9 Science Chapter 3- Atoms and Molecules is a detailed study material prepared by experts. with different textures are obtained from different varieties of silk moths. Mulberry silk moth. After scouring, sorting is done. You have learnt about some fibres obtained from animals. Answer: Hope the knowledge provided regarding the Fibre to Fabric Class 7 Extra Questions and Answers has helped you to the possible extent. Class 7 Science Chapter 3 Important Questions are given below to use free for academic session 2020-21. NCERT Solutions are very helpful for a better understanding of the concepts and self-analysis.. Sorting: In this step, different textures of hair are separated or shorted. “Sheep has two types of fibres that form its fleece” – Name them. In winter they are kept in indoors and fed on dry fodder, leaves and grains. The caterpillar or silk worm spins the cocoon inside which develops the silk moth. Class 6 Science MCQ Questions are available for free download. The process of cutting off the woollen fleece of sheep with a thin layer of skin is called shearing. It is a fatal blood disease. The process of taking out threads from the cocoon for use as silk is called reeling the silk. Woollen fibres are then processed to obtain woollen yarn. Fibre to Fabric Class 7 Extra Questions and Answers Science Chapter 3. This is the wool ready to be drawn into fibres. Ans. Nowadays scouring is done by machines. Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Science for Class 7 so that you can refer them as and when required. NCERT Exemplar Class 7 Science is very important resource for students preparing for VII Board Examination.Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 7. Finally, it comes out of the cocoon as silk- moth. The rearing of silkworms for obtaining silk is called sericulture. Describe the life history of silk moth. Answer: Question 4. From which substance natural silk is made? Usually, hair are removed during the hot weather. Reeling is done with special machines, which unwind the threads or fibres of silk from the cocoon. A fibre is a hair-like strand of material. NCERT Solutions Class 7 Science Chapter 3 Fibre to Fabric. Answer: Wool yielding animals are sheep, yak, llama, […] About STUDYGUIDE360 STUDYGUIDE360 is a student centric educational web portal which provides quality test papers and study materials for the students preparing for CBSE or targeting various entrance exams. What will happen if cocoon is not boiled or exposed to steam? Usually, hairs are removed during the hot weather. NCERT Exemplar Class 7 Science is very important resource for students preparing for VII Board Examination.Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 7. Do you know where do we get wool? Classification of objects into hot and cold objects using activity is presented in tabular form. During these movements of the head, the caterpillar secretes fibre made of a protein which hardens on exposure to air and becomes silk fibre. The fibres can be dyed in various colours, as the natural fleece of sheep and goats is black, brown or white. NCERT Solution for Class 7th Science Chapter 12 Reproduction in Plants comes in the form of a complete solution guide to students with properly labelled diagrams and answering format to all the exercise questions. Practice Multiple Choice Questions for 6th Class Science and test your understanding of different topics in all the Chapters. NCERT Science Book Class 8 Extra Questions with Answers will build strong foundation for Class 8 science … The breeding and management of silk worms for the production of silk is known as sericulture. Processing silk: A pile of cocoons is used for obtaining silk fibres. A female silk moth lays hundreds of eggs at a time. The chapter starts with the topic soil profile, which describes … Soon the caterpillar completely covers itself by silk fibres and turns into pupa. In which season sheep are sheared? Students can solve these Fibre to Fabric Class 7 MCQs Questions with Answers and assess their preparation level. Write any four names of the Indian breeds of sheep with their quality of wool. 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NCERT Solutions for Class 7 Social Science Chapter 3 - The Delhi Sultans - Free PDF Download Class 7th History Chapter 3 is all about Delhi sultans who ruled this region for a longer period. Name some types of silk. Summer. Question 5. Rearing silkworms: For obtaining silk, moths are reared and their cocoons are collected to get silk threads. The empress found white worms eating up mulberry leaves. Thus, tassar silk, mooga silk, kosa silk, etc., are obtained from cocoons spun by different types of moths. How can we differentiate variety of silk? Scouring: In this step, the sheared hair is washed thoroughly to remove grease, dust and dirt. What do you mean by SERICULTURE and SILKWORMS? Solutions are based on latest CBSE Text Books for the academic session 2020-2021. They grow in size and when the caterpillar is ready to enter the next stage of its life history called pupa, it first weaves a net to hold itself. How does the hair of certain animals help in keeping their bodies warm? Question 1. A single fibre is too weak to break but when some fibres together make a fabric, it is difficult to tear. Fibre to Fabric Class 7 MCQs Questions with Answers. Differentiate between Artificial silk and Pure silk. Later on, traders and travellers introduced silk to other countries. Shearing: Once a sheep develops a thick coat of hair, it is shaved off to obtain wool. Answer: In the rearing of silkworms, after 25 to 30 days the caterpillar stops to eating the fresh leaves of mulberry tree and move to a tiny chamber of bamboo in the tray to spin cocoons. Question 8. Answer: 1. Chapter 2 Nutrition in animals. Ask your doubts related to NIOS or CBSE Board and share your knowledge with your friends and other users through Discussion Forum. Apart from grazing sheep, rearers also feed them on a mixture of pulses, corn, jowar, oil cakes (material left after taking out oil from seeds) and minerals. NCERT Solutions for Class 8 History Chapter 7 Extra Questions Weavers, Iron Smelters and Factory Owners Explain the phrase – “Unity is strength” on the basis of the making of fabric from fibre. NCERT solutions for Class 7 Science have been provided below to aid the students with answering the questions correctly, using a logical approach and methodology. This covering is known as cocoon. Question from very important topics are covered by NCERT Exemplar Class 7.. You also get idea about the type of questions and method to answer in your Class 7th examination. Question 2. Students can download 7th Science NCERT Solutions for the session 2020-21 based on latest NCERT Books 2020-2021. Reeling is done in special machines, which unwind the threads or fibres of silk from the cocoon. The fur (hair) on the body of camels is also used as wool. Sheep are reared mainly for the wool. Class 7 Maths NCERT Solutions Chapter 3 Data Handling InText Questions Try These (Page 59 ) Question 1. Machines similar to those used by barbers are used to shave off hair. Answer: Soil is important for life on earth. Sheep are herbivores and prefer grass and leaves. Extra Questions for Class 7 Science Chapter 3 Fibre to Fabric with Answers. CBSE Extra Questions for Class 7 Social Science History Our Pasts – II, Geography : The Earth: Our Habitat, Civics : Social and Political Life – II Pdf free downlod are part of NCERT Solutions for Class 7 Social Science.Here we have given NCERT extra questions for Class 7 Social Science SST History, Geography, Civics. Free PDF download of Important Questions for CBSE Class 7 Science prepared by expert teachers from the latest edition of CBSE (NCERT) books. She also noticed that they were spinning shiny cocoons around them. Our free NCERT textbook solutions for CBSE Class 7 Science will strengthen your fundamentals and can help you to score more marks in the examinations. What will happen if there are no platelets in the blood? NCERT Solutions for Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 11 Physical Education, NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 12 Physical Education, CBSE Sample Papers for Class 10 Session 2020-2021, CBSE Sample Papers for Class 12 Session 2020-2021, Class 7 Science Chapter 4 Important Questions, Useful Tips To Score Good Marks On Programming Assignments, Top Essay Writing Service with Tons of Pros. Then it swings its head from side to side in the form of the figure of eight (8). Reared sheep eat grass and leaves. Wool comes from sheep, goat, yak and some other animals. Solving the Fibre to Fabric Multiple Choice Questions of Class 7 Science Chapter 3 MCQ can be of extreme help as you will be aware of all the concepts. Visit now to download free NCERT science solutions for class 7 … Write the name of some wool yielding animals? The farmers keep eggs under hygienic conditions and under suitable conditions of temperature and humidity. Name some wool yielding animals. In winter, sheep are kept indoors and fed on leaves, grain and dry fodder. Fabric needs more energy to tear apart as compared to a single fibre. NCERT Solutions for Class 7 Science Chapter 4 - Heat. Answer: The sources of obtaining fibres are plants and animals. Answer: Wool is also obtained from goat hair. Therefore, the cocoon is boiled to take out long fibres of silk. After the sheared skin of sheep with hair is thoroughly washed in tanks to remove grease, dust and dirt. NCERT Solutions Class 7 Science Chapter 7 Weather, Climate And Adaptations Of Animals To Climate. Answer: Question 2. Question 10. Question 1. Answer: The caterpillar or silkworm spins the cocoon inside which develops the silk moth. The longer fibres are made into wool for sweaters and the shorter fibres are spun and woven into woollen cloth. Class 7 Science Chapter 3 Important Questions and Keywords of Fibre to Fabric updated for new academic session 2020-21. The hairy skin of the sheep has two types of fibres that form its fleece: (i) the coarse beard hair, and (ii) the fine soft under-hair close to the skin. Question 9. We have included these questions for extra pracitce and help with the concepts. Class 7 students can practice Maths from NCERT Solutions for Class 7 Maths. Name the sources of obtaining fibres. Wool. Doing these questions along with NCERT Solutions of Chapter 3 of Class 7 Science, is provides an ample practice for the preparation of exams and school tests. Electric Current and Its Effects Class 7 Extra Questions and Answers Science Chapter 14 PDF are solved by experts and will guide students in the right direction. Question 1. The silk fibre from the cocoon of this moth is soft, lustrous and elastic and can be dyed in beautiful colours. The hairy skin is sent to a factory where hair of different textures are separated or sorted. After 25 to 30 days, the caterpillars stop eating and move to a tiny chamber of bamboo in the tray to spin cocoons. What Policies Can Help Students Affected by COVID-19? Grass, leaves, mixture of pulses, corn, jowar, oil cakes and minerals. Ch 3 History Class 7 includes the formation of Delhi sultans, their History and also the different situations of Delhi sultans during their reign. The solutions are written in a student-friendly format so that it becomes easier for Class 7 students to browse through topics and practice. Fibre to Fabric Class 7 Extra Questions and Answers Science Chapter 3 PDF are solved by experts and will guide students in the right direction. During past few years, a number of surveys on students were made to better understand their problems regarding their studies and their basic requirement. Answer: CBSE Class 7th Science solutions provide ample material to enable students to form a good base with the fundamentals of the NCERT Class 7 Science textbook. Shearing does not hurt the sheep because uppermost layers of skin is dead. Soon the caterpillar completely covers itself by silk fibres. Nutrition in animals Important … The sheep have fine and soft wool under the hair that grows close to the skin. Question 7. The eggs are stored carefully on strips of cloth or paper and sold to silkworm farmers. Prepare yourself for the best exam preparation with Extramarks, offering chapter wise NCERT solution for CBSE class 7 computer science as per the latest curriculum. What is cocoon? Such risks faced by workers in any industry are called occupational hazards. They grow in size and when the caterpillar is ready to enter the next stage of its life history called pupa, it first weaves a net to hold itself. In 7th class, students are introduced to lots of new concepts which are essential to understand the topics that will be taught in class 8. Answer: Different types of silk (e.g. The NCERT Class 7 solutions can help them ace the class 7 exams with extraordinary marks. Doing these questions along with NCERT Solutions of Chapter 3 of Class 7 Science, is provides an ample practice for … CBSE students can refer to NCERT Solutions for Class 7 Maths Chapter 3 Data Handling InText Questions and Answers are provided by experts in order to help students secure good marks in exams. Name three animals that yield wool. Important Terms for Class 7 Science Chapter 3 1. According to an old Chinese legend, the empress Si-lung-Chi was asked by the emperor Huang-ti to find the cause of the damaged leaves of mulberry trees growing in their garden. Register online for Science tuition on Vedantu.com to score more marks in your examination. Vedantu is a platform that provides free CBSE Solutions (NCERT) … The hair provide woollen fibres. (adsbygoogle = window.adsbygoogle || []).push({}); Copyright 2021 by Tiwari Academy – A step towards Free Education, NCERT Solutions for Class 7 Science Chapter 3, Class 7 Science Chapter 3 Important Questions. October 14, 2020. for commercial purposes. Question 6. In Class 7 Science Chapter 3 Extra Questions, all the keywords are covered in the form of questions and explanation of 7th standard science. Question 2. The further development of the moth continues inside the cocoon. Students can get how to tackle different questions easily by solving the Extra Questions for Class 7 Science Question bank on a regular basis. Fibres and fabric play a large role in everyday applications. This process of selecting parents for obtaining special characters in their offspring, such as soft under hair in sheep. Warmed to a factory where hair of certain animals help in keeping their bodies warm many days the caterpillar silkworm... This page, we at BYJU ’ S provide free Class 7 Questions. Rampur bushair brown fleece Nali Carpet wool Bakharwal for woollen shawls Marwari Coarse wool marks. In different parts of our country for wool discovery of silk from cocoon! Hatch larvae which are called burrs, are picked out from the cocoon which... Fabric needs more energy to tear apart as compared to a factory where hair of sheep called. The reared sheep have developed a thick coat of hair, hair is thoroughly washed in tanks to remove,. Provides Answers to help students understand the concept very well which develops the silk route the route they is... Breeding of different animals and learns fibre production and its management shearing process getting! 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