How is silk fibre obtained? Found inside – Page 39Say 'yes' or 'no'. 6. Name the proteins which form the silk fibre. 7. ... Name the two common fibres obtained from animals that are used for making clothes. The process of selecting parents for obtaining special characters in their offspring, is termed as _________. Found inside – Page 32Name the goats which are found in Tibet and Ladakh. Ans. Angora goats. 2. Name the natural fibre obtained from insects. Ans. Silk. 3. Found inside – Page 31(c) Mulberry (d) Reeling Ans. Silk fibres are derived from silkworms and are therefore called animal fibres. The scientific name (1⁄2 each) Q. 13. Overview. Name some Indian breed of sheep. Found inside – Page 167 1110 THE DYEING OF SILK AND ITS PRODUCTS In the Bleaching and Dyeing Processes There are Three General Groups of Materials to ... class of raiment and decrather restricted in length . ... But the matter of practically common silk fibre is practically continuous , varying knowledge that silk is a fibre obtained from in ... Found inside – Page 39Why are cotton and woollen clothes rough and silk, rayon, nylon, polyester smooth to touch ? ... Explain how fibres are obtained from the jute plants. Found inside – Page 31Ans. Silk fibres are derived from silkworms and are therefore called animal fibres. The scientific name for the silk producing moth (species) is Bombyx mori ... 8,00,000+ Homework Questions. The silk thread or yarn is obtained from the silk … These solutions for Animal Fibres Wool And Silk are extremely popular among Class 7 students for Science Animal Fibres Wool And Silk Solutions come handy for quickly completing your homework and preparing for exams. Found inside – Page 5Q.7. Q.8. Q.9. QUESTIONS FROM PREVIOUS CLASS All plants are same? (a) True (b) False (c) Can't say (d) None ... Silk is obtained from the silk fibre of (a). What do you mean by occupational hazards? Solution 9: Answer: Download Chapter 3 Fibre to Fabric of Class 7 Science NCERT Textbook. 2. Silk. 20,000+ Learning videos. ii. 3. Sericulture Sericulture means ‘silk farming’. Multiple Choice Questions for important part of exams for Grade 7 Science and if practiced properly can help … • Silk fibres come from cocoons of the silk moth. Mulberry leaves are food of silk … YAK 4. For example, cotton from cotton bolls, jute from jute plant, silk from cocoon of silkworm and wool from hair of animals like sheep or goat. Answer: Yarn is made from fibres. Topics Covered in Chapter 3 Fibre to Fabric Class 7 Science :-Wool; Silk; Important Terms Relevant to understand NCERT Solutions for Class 7 Science Chapter 3 – Fibre To Fabric. Ever since human being invented clothes, a variety of fibres have been discovered or invented to suit changes in time climate and fashion. Q8. Question: List five animals from which wool is obtained? Question 4: Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stal Answer: (c) Cocoon is one of the stage of life cycle of silkworm. (a): Wool can be obtained without killing the animal. NCERT Class 6 Science Chapter 15 YouTube Lecture Handouts. SOLUTION: (A) True (B) False : Spinning is the process of making yarn from fibres. Found inside – Page 107About 5500 silkworms are required to produce 1 kg of silk. eggs Silk was such an ... The silk fibres obtained from this moth are soft ,lustrous and ... Q11. 3 : Long thread like structure 3 : Hatches from egg of moth. Q17. Soln: The answer is (c) cocoon . Question 4. 3. (C) False : Jute is obtained from jute plant (Corchorus). View more. Question 1. Answer: The five animals are – Sheep, Alpaca, Llama, Yak and Angora. (True) Weaving of yarn makes a … 10,000+ Fundamental concepts. Artificial silk is obtained from wood pulp and it is made up of modified plant material ‘cellulose’. Animals in daily life [DRAFT] 4. The yarn is wound on big reels which are called bobbins. a) Yarn is made from fibre. (True) Spinning is a process of making fibres. (C) Silk and jute. Silk is the strongest natural fiber. The silk fibre is made up of a protein. Silk fibers are produced on demand from special silk glands of several groups of invertebrate animals such as silk moths. d) The process of removing seed from cotton is called ginning. Class 7. 2. Reeling is done in special machines, which unwind the threads or fibres of silk from the cocoon. A fibre is a long and strong hair like strand obtained from natural sources or man-made sources. Silk is the strongest natural fibre. Silkworms spin the silk fibres. There are 15 questions in this test with each question having around four answer choices. Silk cotton. They are – Plant fibre and Animal fibre. Chapter 1 Nutrition in Plants: Part 1 to 5. The process by which silk fiber is obtained is called REELING THE SILK. CBSE Worksheets for Class 6 Science Fibre to Fabric Assignment 3 CBSE Worksheets for Class 6 Science Fibre to Fabric Assignment 4 D. Answer the following questions in short: Silk cotton is another plant fibre that is commonly used as a stuffing in pillow, sleeping bag, and life jacket. You also learnt that wool and silk fibres are obtained from animals. (a) Mulberry silk (b) Tassar silk (c) Mooga silk (d) Moth silk . Expected questions from class 7 Science Chapter 3 Fibre to Fabric are given below. Wool and silk are known as animal fibres as they are obtained from animals.Silk is a fibre derived from a cocoon of the silkworm, and wool is obtained from the fleece of animals such as sheep or goats.Also, from the hair of rabbits, yak and camel. Silk is obtained after killing silkworm, Animal fur cap is obtained from fur which requires killing of animal. Silk fibres are then spun into silk threads, which are finally woven into silk cloth by weavers. View Solution play_arrow. Silk fibre is obtained from (a) fleece of sheep silk fibre. ,Fibre to Fabric - Notes, Questions & Answers for CBSE Class 7 - TopperLearning How is Silk Obtained? CBSE Class 7 Science How Is Silk Obtained? The rearing of silkworms for obtaining silk is called (a) cocoon (b) silk (c) sericulture (d) silviculture . Fibre to Fabric Class 7 Extra Questions HOTS. The base of natural fiber which is obtained from plant is cellulose which is base material in the plant world and Animal fiber are made up of proteins, the complex compounds that form a major part of bodies of animal. Have a glance at the MCQ of Chapter 3 Science Class 6 and cross-check your answers during preparation. Found inside – Page 44The man-made fibres produced from chemical substances are called ... We have studied in Class VII that silk is a natural fibre obtained from silkworms. How is silk fibre obtained? Is the strongest natural Fibre answer? NCERT Class 6 Science Chapter 16 YouTube Lecture Handouts. A yarn or fabric made from short unreeled silk fibre that have been degummed is called spun silk. Found inside – Page P-42Q. 7. If you have seen any fabrics that are made of the fibres on the outer covering of coconut. ... (f) Silk fibre is obtained from the stem of a plant. Two wool giving animals. C. Cocoon is a protective case of silk or similar fibrous material spun by the larvae of moths and certain other insects as a cover for the pupa. 3 Fibre to Fabric I n Class VI you have learnt about some fibres obtained from plants. 5. Found inside – Page 18(e) Weaving of yarn makes a piece of fabric. (f) Silk fibre is obtained from the stem of a plant. (g) Polyester is a natural fibre. (NCERT TEXTBOOK Q2. In plant fiber, Jute fiber obtained from jute plant this is also called as Golden fiber. Silk – Silk and woollen are the usual fibres obtained from animals. Found inside – Page 37In order to obtain silk, mulberry trees are cultivated (grown), silkworms are reared, and their cocoons collected to get silk fibres. a. Answer: The fibres obtained from plants and animals are called natural fibres. SILK Silk fiber is obtained from the cocoons of the silkworms (silk moth). Practice MCQ Questions for Class 7 Science with Answers on a daily basis and score well in exams. Refer to the Fibre to Fabric Class 7 MCQs Questions with Answers here along with a detailed explanation. Found inside – Page 31(c) Mulberry (d) Reeling Ans. Silk fibres are derived from silkworms and are therefore called animal fibres. The scientific name (1⁄2 each) Q. 13. Cotton is also a strong fibre but the strength is largely affected by moisture, as its wet strength is 20% (much higher than dry strength). The silk obtained from the cocoons of mulberry silk moth is called mulberry silk. Silk is an animal fibre obtained from silkworms. Silk is a natural, strong fibre as it has great tensile strength, which allows it to withstand a great deal of pressure. What are the different types of silk? (b) Spinning is a process of making fibers. Do you know e) Weaving of yarn makes a piece of fabric. Found inside – Page 31(c) Mulberry (d) Reeling Ans. Silk fibres are derived from silkworms and are therefore called animal fibres. The scientific name (1⁄2 each) Q. 13. The caterpillars of silkworms feed on. (D) True (E) True (F) False : Silk fibre is obtained from silkworm (animal). Grade 7 Fibre to Fabric Worksheets. (A) Jute fibres are obtained from the stems of the plants (B) Cotton is obtained from the balls of the flowers. Found inside – Page 32[NCERT Exemplar] (a) Mulberry silk (b) Tassar silk (c) Mooga silk (d) Moth silk 3. Paheli wanted to buy a gift made of animal fibre obtained without killing ... These MCQ Questions on Fibre to Fabric Class 7 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. When the fruit ripens, it bursts open, releasing the fibres. Found inside – Page 109The workers of silk industry face risks of disease related to (a) skin (b) lungs (c) ... In which stage of the life cycle of silkmoth forms silk fibres? Study Material and Notes of Ch 3 Fibre to Fabric Class 7th Science. 2. Soln: The answer is (d) Moth. Class- VII-CBSE-Science Fibre to Fabric. Why is silk obtained by mulberry silk moth most popular? Get top class preparation for UGC right from your home: Get detailed illustrated notes covering entire syllabus: point-by-point for high retention. Found inside – Page xxxvMarks 15 ○ Wooland Silk fibres are obtained from animals. ... 15 × 1 = 15 (a) 7–8 days (b) 3–4 days (c) 9–10 days (d) 6–7 days. 2. The stage of silk moth ... Cocoons are collected and kept under the sun, or boiled, or exposed to steam. Found inside – Page 387. (c) Nylon (d) Polyester. 8. (a) Weaving (b) Spinning Which type of fibre gives ... Twisting makes fibres: (a) Weak Silk is obtained from: (b) Strong (a) ... Silk: Silk is an animal fiber that is obtained from an insect called a silk moth. Updated Lab activities, Group-activities, Worksheets, Projects, Mental Maths, Challengers (Tricky questions), MCQs, Chapter Test, Quick Review. Use of modern tools, gadgets and technology make these books more interesting and user friendly. Found inside – Page 31(c) Mulberry (d) Reeling Ans. Silk fibres are derived from silkworms and are therefore called animal fibres. The scientific name (1⁄2 each) Q. 13. Wool is the fibre derived from the fur of sheep, but the hair of certain species of other mammals such as goats, alpacas, and … Class- VII-CBSE-Science Fibre to Fabric. 4. Cotton; b. Coir; c. Jute; d. Silk; Answer. NCERT 7th Class (CBSE) Science: Fibre to Fabric admin September 2, 2017 7th Class , Science 19,285 Views Question: Mention the place and type of wool that is obtained … Found inside – Page 337. Which part of the jute plant is used for getting jute fibre? [NCERT Exemplar] (a) Flower (b) ... (j) Silk fibre is obtained from the stem of a plant. Examples include silk, hair/fur (including wool) and feathers….Fiber from other animals. Write a short note on silk. A. CBSE Class 7 Science [SET – 9] – 50 Questions. Chapter 2 Nutrition in Animals: Part 1 to 6. Hence silk and wool are animal fibres. Wool yielding animals have thick fur. Give reasons. Solution: Down (D) 1. Ans. Explanation: Silk is a fibre obtained from the cocoons of silkworms. Two examples of animal fibres are___ (A) Cotton and wool. Found inside – Page P-52How is woollen yarn obtained from the carded wool ? 3 Ans. . ... The low grade silk is obtained from the filaments of ... What do you mean by yarn? Solution: Down (D) 1. (g) Polyester is a natural fibre. Ans. SignUp for free. Found inside – Page 103(b) 7. (a) 8. (c) 9. (b) 10. (d) Silk fibres are natural fibres, obtained from cocoons of silkworm. Terylene, Polyester and Rayon are made artifically using ... Then, the spinning of silk fibres into threads is done. The silk moth lives on the leaves of mulberry plants. Practice more on Fibre to Fabric Page - 4 www.embibe.com. Natural silk is an animal fibre. Found inside – Page 181The result is said to have been the accumulation of the silk fibre in the body of the worm . Their heads were then plucked off , and the bodies thrown into a vessel of warm water , and the ends of the fibres being extracted , the silk was reeled off in the ordinary way . ... The fabrics made from it are worn by the middle class , the eri silk fabrics by the poor . ... as to allow of comparison :From edge to edge of the tasar fibre , Mr. Wardle says , the diame . ter is 7 oth part of an inch taken from the ... NCERT Class 7 Science Chapter 3: Fibre to Fabric YouTube Lecture Handouts. Silk is obtained from the silkworms whilst, wool is obtained from the goat, sheep and yak. Risks faced by workers in any industry are called occupational hazards. The fibres obtained from plants and animals are called natural fibres. To scour is to wash thoroughly. Notes of Ch 3 Fibre to Fabric Class 7th Science Ashu12 Mar, 2018 Study Material and Notes of Ch 3 Fibre to Fabric Class 7th Science Animal fibres → Wool and silk fibres are obtained from animals. → Wool is obtained from the fleece (hair) of fleece sheep or yak. Silk fibres come from cocoons of the silk moth. Wool Q. Rearing and selective breeding of sheep is done. In Class 6, you have learned about some fibres obtained from plants. Silk is a natural, strong fibre as it has great tensile strength, which allows it to withstand a great deal of pressure. The rearing of silkworms for obtaining silk is called sericulture. You must be familiar with the following nursery rhymes: 1. The process of washing of sheared skin with hair in tanks to remove any kind of dust, dirt or grease is called. Wool keeps us warm. The silk fibre is obtained from the covering of pupa known as _____ 8. CBSE Class 7 Science Fibre to Fabric MCQs Set B with answers available in Pdf for free download. Silk: Cocoon, Wool: ____ A) Hair of rabbit done clear. Jute, cotton, etc. A wool fibre cannot be obtained from which of the following? Normally the silk traders prefer to buy the silkworms in cocoon stage. Check the below NCERT MCQ Questions for Class 7 Science Chapter 3 Fibre to Fabric with Answers Pdf free download. These MCQ Questions on Fibre to Fabric Class 6 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Chapter 3: Fibre to Fabric. Found inside – Page 103(a) Jute is a fibre obtained from stem of jute plant. ... (b) 7. (a) 8. (c) 9. (b) 10. (d) Silk fibres are natural fibres, obtained from cocoons of silkworm ... fiber. Silk fibre is obtained from the _____ of the silk moth. This test is Rated positive by 89% students preparing for Class 7.This MCQ test is related to Class 7 syllabus, prepared by Class 7 teachers. … To scour is to wash thoroughly. The long silk fibres are obtained by unwinding the threads from cocoons. Silk is the strongest natural fiber. Q15. Why? Fibre to Fabric Class 7 Extra Questions HOTS. Why is silk obtained by mulberry silk moth most popular? ,Fibre to Fabric - Get topics notes, Online test, Video lectures, Doubts and Solutions for CBSE Class 7 on TopperLearning. A) Found inside – Page 35Patanwadi For hosiery Gujarat ▸ Processing fibres into wool involves the following steps : I. The fleece of ... obtained from the cocoon of the silk moth. b) Spinning is a process of making fibres. This helps in separating out the silk fibres. 4. Found inside – Page 7Natural fibres are obtained from wool, silk, cotton, linen and jute. ... country Geography Class–7 Geography Class–8 Geography Class–9 Geography Class–10 24 ... What do you mean by occupational hazards? Study Material and Notes of Ch 3 Fibre to Fabric Class 7th Science. You also learnt that wool and silk fibres are obtained from animals. MP Board Class 7th Science Solutions Chapter 3 Fibre to Fabric Fibre to Fabric Intext Questions. Found inside – Page 29In Short : Fibre into wool is represented by flow chart : Shearing → Scouring → Sorting ... SILK YARN : is obtained from the cocoon of the silk moth. 5. Q20. ANIMALS THAT YEILD WOOL SEVERAL BREEDS OF SHEEPS ARE FOUND IN DIFFERENT PARTS OF OUR COUNTRY. The process of taking out threads from the cocoon for use as silk is called reeling the silk. Found inside – Page 14Wool burns with smell of burning hairs (a) Because it is a natural fibre. ... Silk is a natural animal fibre obtained from silkworms named (a) Bomby Morix ... Found inside – Page 124A synthetic fibre obtained from renewable resources is (1) Nylon. ... 7. Which of the following terms is not related to silk production: (1) Sericulture (2) ... Fibre is a long thread like structure. Explanation: fibre to fabric. What do you understand by wool? The silk yarn is then woven on looms into silk cloth by the weavers. Science ... Strike out the one which is a fibre obtained from animal. Question 1. Found inside – Page 7(e) Weaving of yarn makes a piece of fabric. (f) Silk fibre is obtained from the stem of a plant. (g) Polyester is a natural fibre. Animal fibre – Hair of alpaca, llama and camel are handled and processed to produce the wool. Obtaining of silk from cocoon: First of all, cocoons are boiled and then silk fiber is separated out, using machines. There are about 20 sets of MCQ tests, each test containing 5 questions with answers and explanation of answers updated for new academy session 2021-22. 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. 2. Found inside – Page 21Two types of fibers are: (i) Animal fibres (ii) Plant fibres ➢ Silk: It comes from silkworms. ➢ Wool: It is obtained from sheep, goat, and yak. Question 1. Animal fibers are natural fibers that consist largely of certain proteins. c. What are raw silk and spun silk? Science_in_everyday Solutions for Class 7 Science Chapter 3 Fibre To Fabric are provided here with simple step-by-step explanations. NCERT CLASS 7 Science Chapter 3- FIBRE TO FABRIC. Jul 26, 2021 - Chapter Notes 2 - Chapter 2: Fibre to Fabric, Class 7, Science | EduRev Notes is made by best teachers of Class 7. This fibre is made of a protein and becomes the silk fibre. Ans. Silk is a fibre derived from a cocoon of the silkworm, and wool is obtained from the fleece of animals such as sheep or goats. The further development of the pupa into moth continues inside the cocoon. Hemp ANIMAL FIBRES The common animal fibres are wool and silk. Fibres are classified into two type’s namely natural fibres and synthetic fibres. g) Polyester is a natural fibre. Which of the following is not a type of silk? Q16. Found inside – Page P-42Q. 7. If you have seen any fabrics that are made of the fibres on the outer covering of coconut. ... (f) Silk fibre is obtained from the stem of a plant. Which is the strongest natural Fibre Class 7? Wool is obtained from the fleece (hair) of fleece sheep or yak. Jute, Cotton, silk, wool, Coir, Flax. November 11, 2020. Diarrhoea is caused due to ( ) 4. The silk moth passes through a worm-like stage called ‘larva’ or caterpillar’ (which is also called silkworm) and an encased form called pupa’ during its development between the hatching of egg and formation of adult silk moth. discovery of silk Differentiate between the larva stage and pupa stage in the life cycle of a silk moth. Here we talk about two fibres obtained from animals- Wool and Silk. MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. e) Weaving of yarn makes a piece of fabric. Found inside – Page 39Say 'yes' or 'no'. 6. Name the proteins which form the silk fibre. 7. ... Name the two common fibres obtained from animals that are used for making clothes. Fibre to Fabric class 7 Science Main Points/Notes Silk comes from silkworms and wool is obtained from sheep, goat and yak. A female silk moth lays 100 of eggs at a time. It comes from the fleece/hair of wool yielding animals such as sheep, goat, yak, camel, rabbit, etc. Q12. Lakhmir Singh and Manjit Kaur Science solution: Fibre To Fabric Chapter 3. Found inside – Page 19Discovery of silk : Silk is supposed to be discovered in China. ... Silk fibre is obtained from [NCERT Exemplar, p-15, Q.4] (a) fleece of sheep (b) cotton ... Length of small intestine is ( ) d) 7.5m long. Silk fibre is obtained from the cocoon of the silk moth. What are the various types of silk? Q13. 2. Polyester is a natural fibre. Llama and Alpaca, found in South America, also yield wool. This is Science Class 7 Fibre to Fabric CBSE Questions & Answers. Class 7. Silk: Cocoon, Wool: ____ A) Hair of rabbit done clear. You also learned that wool and silk fibres are obtained from animals. are some plant fibres whereas wool, silk, etc. Wool is obtained from sheep, goat, yak, camel, llama, alpaca etc. Refer to the Fibre to Fabric Class 6 MCQs Questions with Answers here along with a detailed explanation. In fact, the best-known silk fibers are obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity. This covering is known as cocoon. The process of taking out silk fibres from the cocoons for use as silk is called reeling. Wool is obtained from the ____ of sheep. Found inside – Page 44For example, nylon fibre is made up of nylon polymer in which two ... We have studied in Class VII that silk is a natural fibre obtained from silkworms. Step I: The first step towards obtaining silk is rearing of silkworms done when mulberry trees bear a fresh crop of leaves. Found inside – Page 9CHAPTER 3 Fibre to Fabric Chapter Summary ▸ The fibres obtained from animals are called animal fibres. Example : wool and silk. ▸ Wool is obtained from ... f) Silk fibre is obtained from the stem of a plant. Found inside – Page 181The fabrics made from it are worn by the middle class , the eri silk fabrics by the poor . ... The fibre is not only much finer than the tasar silk , but it is round , like that obtained from the mulberry - fed worms . ... Thoth part of an inch taken from the outer and from the inner fibres to ; the former bear a strain of 7 drams , while the fine and uniform fibres from the inner layer of the cocoon bear as much as 8 drams . Found inside – Page 107About 5500 silkworms are required to produce 1 kg of silk. eggs Silk was such an ... The silk fibres obtained from this moth are soft ,lustrous and ... Down Across. So, silk fibres are also animal fibres. This covering is known as Cocoon. d. With the help of flow chart, describe the life cycle of a silkworm. Question 2. Cocoon: A protective covering spun around itself by a silkworm from which silk fibre is extracted is called cocoon. They eat day and night and increase enormously in size are named as: Q18. (B) Cotton andflax. 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Releasing the fibres obtained from plants and animals are – sheep, goat, sheep and yak Science solution fibre. Mcqs Set b with Answers Larva stage and pupa stage in the life cycle of a plant for VII Examination. Which Part of the mulberry silkworm Bombyx mori reared in captivity Chapter 1 Nutrition in animals: 1!, Doubts and Solutions for CBSE Class 7 on TopperLearning llama and camel are handled and processed to produce wool... It has great tensile strength, which allows it to silk fibre is obtained from class 7 a great deal of pressure answer: Chapter! Crop of leaves a great deal of pressure cocoon stage: around 3500 BC silk. Silk is obtained from which of the following: 1 of eggs at a time silk, etc cotton! Make these books more interesting and user friendly dyed in different colours NCERT for! Answers for CBSE Class 7 Science Chapter 15 YouTube Lecture Handouts Answers Solutions Question 1 the of... Little lamb, whose fleece was white as snow. ’ called reeling the.... 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