Q. Cocoons are kept under sun. Hemp: Hemp fibres are obtained from the stem of the hemp plant. (b) selecting the parents with desired properties. Some fibres made from chemical changes are called: (a) synthetics fibres (b) natural fibres (c) silver (d) none of these. The cotton thread and silk … (d) Mulberry silk, tassar silk, mooga silk and eri silk are different types of silk produced from cocoons of different types of silk moths. (False) c) Jute is the outer covering of coconut. C) done clear. Ungraded . Such animals generally live in cold climates. Ungraded . The harvester keeps these eggs at a warm temperature of 75 to 85 degrees Fahrenheit up to fourteen days. are solved by group of students and teacher of Class 7, which is also the largest student community of Class 7. | EduRev Class 7 Question is disucussed on EduRev Study Group by 115 Class 7 Students. Silk: cotton Silk cotton is another plant fibre that is commonly used as a stuffing in pillow, sleeping bag, and life jacket. Silk fibres are converted into silk yarn which is used for making silk cloth. 7. Question 6. The silk yarn (thread) is obtained from the cocoon of the silk moth. Fill in the blanks: a) Plant fibres are obtained from_____ and _____ . According to historians, silk was made in India as well. Examples of natural fibers are cotton and silk whereas examples of synthetic fibers are: nylon, polyester, etc. From which parts of the plant cotton and jute are obtained? View Solution play_arrow; question_answer7) Woollen fibres are obtained from which of the following things? Answer. Cocoons are collected and kept under the sun, or boiled, or exposed to steam. Silk is a natural protein fiber produced by silkworms that are kept in captivity. Around 3500 BC, silk was discovered in China during the reign of emperor Huang-ti. S CIENCE 24 Fibre to Fabric 3 I n Class VI you have learnt about some fibres obtained from plants. 1. Silk fibres are used for weaving silk cloth. Silk farmers throw the cocoons into boiling water, separating out the silk fibers. 8. Commercial silk is obtained from the cocoons spun by certain caterpillars (larvae of moths and butterflies) before pupation. Which of the following fibres on burning smells like burning hair? Q12. See more. Acrylic fibres bums with a sooty flame and shrinks to form black beads. Question 7. Yarn is a long continuous thread that is made up of fibre. View Blog. Answer. Answer: The fibres obtained from plants and animals are called natural fibres. Fibre obtained from plants and animals are called (a) Animal fibre (b) Plant fibre (c) Synthetic fibre (d) Natural fibre (d) Natural fibre . Solution: The process of making yarn from fibre is called spinning. Spinning synthetic spider-silk fiber by using a much simpler spinning process. See more. View more. At that time it was only used by the emperors and it was kept secret for hundreds of years. Silk fibres are obtained from silkworms. Customize assignments and download PDF’s . iii. A. Knighting. Q. Cellulose is made up of a large number of _____ units. 4. Silk yarn is easily available as a waste product from textile processing, making silk fibre-reinforced composites environmentally friendly and cost effective. Question 9. done clear. Silk fibre is obtained from cocoons of the silk moth. Question 8. Answer: Yarns are made up of thin strands called fibres. Answer (a) synthetics fibres Some fibres made from chemical changes are called synthetic fibres. This covering is known as cocoon . A fine, lustrous natural fiber obtained from the catepillar cocoons of silk moths, such as the domesticated Bombyx mori. Answer. But the assumed mechanism still needs further study to confirm in more detail. The fibres are very fine and lustrous, about 10μm(0.0004in)in diameter. Answer. Angora. Q11. The cocoon is made of a thread of raw silk from 3 0 0 to about 9 0 0 m (1, 0 0 0 t o 3, 0 0 0 f t) long. Silk is a natural protein fiber, some forms of which can be woven into textiles. Thick coat of hair over the body of such animals traps lot of air and keeps them warm as air is a bad conductor of heat. Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. Wool is a natural fibre obtained from plants. Your email address will not be published. Silkworm is … Silk moths are native to South and Southeast Asia as well as Northern China (e.g., Antheraea pernyi). Silk fibres are obtained from silkworms. Acrylic fibres bums with a sooty flame and shrinks to form black beads. Selective breeding is a process of (a) selecting the offsprings with desired properties. QUESTION: 7. Answer: a) Yarn is made from fibres. Silk fibre is obtained at which of the following stage of its life cycle?a)b)c)d)Correct answer is option 'C'. What do you mean by yarn? mention any two. The silk yarn (thread) is obtained from the cocoon of the silk moth. Answer. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Silkworm. 1 decade ago. mention any two. done clear. (False) d) The process of removing seed from cotton is called ginning. Silk is a natural protein fibre which can be used as a textile fibre. You also learnt that wool and silk fibres are obtained from animals. Answer. B. Yarning. It is one of the important animal fibres obtained from silkworm. Silk definition, the soft, lustrous fiber obtained as a filament from the cocoon of the silkworm. The fruits of the kapok tree contain fibres that are light and fluffy (like cotton). Silk fibre made of How silk is made from silkworm According to legend, silk was discovered by Chinese Empress Si-Ling-Shi when a cocoon fell in her tea. (True) b) Spinning is a process of making fibres. Silk fibre made of How silk is made from silkworm yak How does sericulture done what isrearing 1.What changes take place in the Pupa stage of silkworm? Silk fibre is obtained at which of the following stage of its life cycle? Report an issue . Kundan646 Kundan646 20.11.2019 Science Secondary School How is silk fibre obtained from cocoon? Camel. Elizabeth H. Lv 7. Silk is a protein fibre and is a non-conductor of heat. Which of the following would be the right gift (a) Woollen shawl (b) Silk scarf IndianSilkShop can provide you unique Silk Fibers of your choice in any quantity. View solution. In fact, the best-known silk fibers are obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity. Answer: (c) cocoon. f) Silk fibre is obtained from the stem of a plant g) Polyester is a natural fibre. The cocoon is made of a thread of raw silk from 300to about 900m(1,000to3,000ft)long. Two devices used in spinning are takli and charkha. 6.6 Silk fibre-reinforced composites. Question 6. Question 11. It is taken from the cocoons of silkworms. Silk fibre is made of a protein. Cokoon. Log in. All the non-generic resources of this type are: Bamboo Cotton Hemp Jute Seaweed Silk Straw The various resources within this type are interchangeable for crafting common items. Join now. Can you imagine that the soft silk yarn is as strong as a comparable thread of steel! Silk fibre is obtained from? Moth silk is not a type of silk. Lohi, Rampur bushair, Nali, Bakharwal, Marwari and Patanwadi . Silk can also be obtained from other insects such as wasps, bees, ants, beetle, flies, and fleas. Can you imagine that the soft silk yarn is as strong as a comparable thread of steel! 1 0. A) done clear. 1. We found one answer for “Silk” . Give reasons. Silk moths are native to South and Southeast Asia as well as Northern China (e.g., Antheraea pernyi). Conclusion . Silk fibers are produced on demand from special silk glands of several groups of invertebrate animals such as silk moths. Answer. Question 19. Join now. Log in. D. shiny jute stalk. (True) b) Spinning is a process of making fibres. Answer. Silk plant. This covering is known as the cocoon. Cokoon. What are the common health problems found in the people who work in silk industry? Answer. Silkworms … Answer: a) Yarn is made from fibres. This covering is known as Cocoon. Copyright © 2020 PANDA SILK® All Rights Reserved. 4. Silk fibres come from cocoons of the silk moth. Yak wool is common in Tibet and Ladakh. The fibres are first drawn out from their source and then twisted into yarn. The farmer needs to take good care of these delicate larvae and feed them mulberry leaves. Silk is a resource under the generic Fiber type of resources. Ans. The total amount of β -sheet is around 50% for B. mori silk, which matched the proportion of the (Gly-Ala) n motif [ 42 , 43 , 46 ]. Answer. If we perform the burning test, then natural silk fibre burns giving a smell of burning hair while artificial fibre burns giving a smell of burning paper. Which product of caterpillar forms silk? They grow up in size and before they enter in the second stage which is called as pupa the caterpillar swings their head from sides and makes the shape of eight every time. Finally, you can weave the silk fibers obtained into clothes. A fiber can be of two types: natural fiber and synthetic fiber. Silk fibre is obtained from: (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. Other insects can also produce silk. The further development of the pupa into moth continues inside the cocoon. Differentiate between the eri silk and other types of silk. Silk fibre is obtained from : A. fleece of sheep. Removal of the sericin coating before use removes the thrombogenic and inflammatory response of silk fibroin [217] . Silk fibre is obtained from cocoons of the silk moth. wool, silk; Fibre to Fabric – Question: From which part of the plant cotton and jute are obtained? Name some Indian breed of sheep. Siklworm

Silk plant

alternatives

Silk flower

Cokoon

Silkworm

Siklworm

Tags: Question 8 . C. cocoon. Silk fibers are produced from various types of ectodermal glands in the mites, spiders, and several groups of insects. B) Carbon compounds. Until the discovery of nylon and other synthetic fiber polymers, the silk of domestic silkworm, Bombyx mori, was an economically and, at the time of war, also strategically important commodity. SURVEY . The caterpillar secretes fibre made of a protein, soon the caterpillar completely covers itself by silk fibres and turns into pupa. S CIENCE 24 Fibre to Fabric 3 I n Class VI you have learnt about some fibres obtained from plants. g) Polyester is a natural fibre. 3. The further development of the pupa into moth continues inside the cocoon. This covering is known as Cocoon. Cleaning the fleece removes “wool grease,” the fatty substance purified to make lanolin (q.v. Answer: Ropes; Mats; Question: Explain the process of making yam from fibre. The silk fibre obtained from the cocoon of mulberry silk moth are soft and lustrous. Silk is a natural protein fibre which can be used as a textile fibre. It can be blended with wool and silk to create beautifully soft textiles.The fabric made from these fibers is greatly valued for its softness and warmth. China is the largest silk producer and consumer in the world followed by India where Indian sarees made from silk are famous. Find an answer to your question How is silk fibre obtained from cocoon? (False) d) The process of removing seed from cotton is called ginning. Silk fibres come from cocoons of the silk moth. For example: wool and silk. Question 8. 4. Why? Q. Rearing and selective breeding of sheep is done. They are produced by various types of silkmoths. Silkworms spin cocoons for the vulnerable pupa stage. 3. The fruits of the kapok tree contain fibres that are light and fluffy (like cotton). True . Answer. 30 seconds . Otherwise the insect after its growth breaks open the cocoon by breaking the silk fibres. How is Silk Obtained? This is the fiber obtained from the wool of alpaca, a variety of camel native to South America (Peru). The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture). Eri Silk. Silk fibres come from cocoons of the silk moth. ... Ans. Answer. The fibers which are obtained from plants and animals are known as natural fibers whereas synthetic fibers are man-made fibers. Silkworms are not actually born as worms rather as larvae and caterpillar hatched from the eggs of silkmoth. It is one of the important animal fibres obtained from silkworm. It is usually … Silk fibres can be incorporated as reinforcements into thermoplastic matrices to create composite materials with a high strain to failure rate. B) done clear. BioSteel was a trademark name for a high-strength fiber-based material made of the recombinant spider silk-like protein extracted from the milk of transgenic goats, made by Montreal-based company Nexia Biotechnologies, and later by the Randy Lewis lab of the University of Wyoming and Utah State University. Question 5. This helps in separating out the silk fibres. Wool is obtained from the fleece (hair) of sheep or yak. Silk fibre is obtained from the silk cocoon and not from the adult. ii. The process by which silk thread is separated from the cocoon is called reeling the silk. Then, the spinning of silk fibres into threads is done. Name two items that are made from coconut fibre. Silk is a natural protein fiber, some forms of which can be woven into textiles. History of silk: Around 3500 BC, silk was discovered in China during the reign of emperor Huang-ti. The further development of the pupa into moth continues inside the cocoon (Fig. Wool yielding animals have thick fur. Removing the fleece of the sheep along with a thin layer of skin is called cutting. The silk fibre is obtained from the rearing of silkworms. Important to note is that the fiber is only produced by the larvae of the insect. 6. answer choices . Question 10. This page shows answers to the clue Silk, followed by ten definitions like “A fiber obtained from silkworm cocoons”, “A natural fibre, processed to make an absorbent fabric” and “Postcards where silk fabric is applied to the design”. Few examples are kosa, tassar, mooga, etc. Wool is obtained from the fleece (hair) of sheep or yak. Natural silk is an animal fibre. True. 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. 2. View solution. 3. (Silk fibre kisse milta hei?) Can you explain this answer? Commercial silk is obtained from the cocoons spun by certain caterpillars (larvae of moths and butterflies) before pupation. Natural silk is an animal fibre. Question 11. For crafting higher-quality blueprints, you will need to include two or more of these named resources, but not the generic resource. Question 20. Silk fiber can be obtained from several insects but the most popular one is silkmoth. The silk fibre is obtained from this silkmoth’s cocoon. A fine, lustrous natural fiber obtained from the catepillar cocoons of silk moths, such as the domesticated Bombyx mori. This page shows answers to the clue Silk, followed by ten definitions like “A fiber obtained from silkworm cocoons”, “A natural fibre, processed to make an absorbent fabric” and “Postcards where silk fabric is applied to the design”. Process of making yarn from fibre is called. Later on it was spread across the world through trading. Adult is not allowed to come out of the cocoon. ... From the experiment results, it is certain that with introduction of titanium dioxide or/and formaldehyde, tougher fiber can be obtained. C) Fleece of sheep. Artificial silk is obtained from wood pulp and it … The route through which it used to travel was known as the ‘Silk route’. False. Wool is a natural fibre obtained from plants. High purity silk fibroin fiber can be obtained easily from degummed silk (boiling-off), which refers to partial or complete removal of the sericin. High purity silk fibroin fiber can be obtained easily from degummed silk (boiling-off), which refers to partial or complete removal of the sericin. Create custom Assignments. True. Explain. air and becomes silk fibre. The caterpillar secretes fibre made of a protein, soon the caterpillar completely covers itself by silk fibres and turns into pupa. Silk fibers are produced on demand from special silk glands of several groups of invertebrate animals such as silk moths. Wool fibre cannot be obtained from which of the following? Silk fibre is obtained from: (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. Required fields are marked *. In fact, the best-known silk fibers are obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity. f) Silk fibre is obtained from the stem of a plant. B. cotton ball. Wool is mainly obtained by shearing fleece from living animals, but pelts of slaughtered sheep are sometimes treated to loosen the fibre, yielding an inferior type called pulled wool. (Silk fibre kisse milta hei?) Artificial silk is obtained from wood pulp and it is made up of modified plant material ‘cellulose’. SURVEY . Silkworm. Can you explain this answer? There are several insects that can produce silk, but only the silk produced by the moth caterpillars are used for textile production. K. Murugesh Babu, in Silk (Second Edition), 2019. Silk is a type of natural fiber or animal fiber. This fibre is obtained from the silk cotton tree, also called kapok. When the fruit ripens, it bursts open, releasing the fibres. Q. Eri silk, also known as the Endi or Errandi silk, is a creamy white-colored silk. Answer: Natural silk is obtained from the cocoons of silkworms and it is made up of a protein. Answer. discovery of silk Differentiate between the larva stage and pupa stage in the life cycle of a silk moth. Answer: (c) cocoon Jan 07,2021 - Silk fibres are obtained from silkworms. Silk is the first artificial fibre synthesized by human beings. The soft looking silk yarn is as strong as a comparable thread of steel. Silk fibres are made of a protein. It was considered as one of the most valuable fibre at that time because of its lustre and fine quality. Brief History Of Silk Production . C. Weaving. Jute is obtained from the of plant. Silk fibres are used for weaving silk cloth. It was considered as one of the most valuable fibre at that time because of its lustre and fine quality. Camel hair is a very soft fiber and because of its rarity, a very expensive fiber. Silk, animal fibre produced by certain insects and arachnids as building material for cocoons and webs, some of which can be used to make fine fabrics. (a) Goat (b) Llama (c) Alpaca (d) Moth. You also learnt that wool and silk fibres are obtained from animals. Ans. Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk 5. False. 3.9). Silk is a natural fibre which is obtained from an insect (called silk moth). v. done clear. Silk Fibers are world famous in its shine, lustre and tensile strength. Silk fibre made of How silk is made from silkworm yak How does sericulture done what isrearing 1.What changes take place in the Pupa stage of silkworm? It is derived … It can be differentiated on the basis of lustre and texture. Silkis a fine, strong, soft and shining fibre produced by silkworms in making their cocoons. Silk fiber is obtained from the stem of a plant. When the fruit ripens, it bursts open, releasing the fibres. Hemp fibres are used in the production of ropes, carpets, nets, clothes, and paper. Silkworm secrete fibre made up of: View solution. Silk fibre is obtained at which of the following stage of its life cycle?a)b)c)d)Correct answer is option 'C'. French German Italian Spanish Portuguese (Brazil) Dutch Japanese Korean Arabic Danish Russian Swedish. Plastics are non-biodegradable. Answer: (d) Moth. The most popular form of silk is obtained from the cocoons of mulberry silkworm Bombyx mori. If the answer is not available please wait for a while and a community member will probably answer this soon. The silkmoth further develops in the covering called a cocoon. ,Fibre to Fabric - Get topics notes, Online test, Video lectures, Doubts and Solutions for CBSE Class 7 on TopperLearning. A female silk moth lays multiple eggs at one time. Question 7. For example, cotton from cotton bolls, jute from jute plant, silk from cocoon of silkworm … Plastics are non-biodegradable. Silk is a natural fiber that is obtained from an animal source. 16 EXEMPLAR PROBLEMS 6. Answer: Cotton – Cotton bolls (from the surface of cotton seeds) (fruit) Jute – Stem; Question: Name two items that are made from coconut fibre. Fibre to Fabric NCERT – Question: Sorter’s disease is an occupational hazard. Some forms of silk can be woven into clothes. Silk Pillowcases Are Best Pillowcase for Women, What Is Silk Satin Fabric and Its Advantages Over Synthetics, How To Prevent Silk Sheets From Slipping Off The Bed, Improve Your Skin and Hair With Silk Sheets & Silk Pillowcases, Which Countries Are The Main Producers Of Silk, Prevent Wrinkles And Frizzy Hair With Silk Pillowcases, Features & Reeling Technology of Dupioni Silk Yarns. Do you know which part of the sheep’s body yields fibres? The cocoons are treated with boiling water to kill the insect inside and so the fibre can be obtained without damage and of good quality. Animal Fiber: Fiber obtained from animals is called animal fiber. iv. ii. View solution. Silk flower. False. Silk definition, the soft, lustrous fiber obtained as a filament from the cocoon of the silkworm. Wool fibre cannot be obtained from which of the following? Siklworm

Silk plant

alternatives

Silk flower

Cokoon

Silkworm

Siklworm

Tags: Question 8 . The most notable silk comes from the Bombyx mori, a mulberry silkworm found in China. View solution. In hot humid conditions, which of the following fabrics will you choose for wearing? 2. 2. Wool fibre cannot be obtained from which of the following? b) Animals fibres are _____ and _____ . D. Spinning. According to legend, silk was discovered by Chinese Empress Si-Ling-Shi when a cocoon fell in her tea. Some fibres such as cotton, jute, silk and wool obtained from plants and animals are called natural fibres. The best-known type of silk is obtained from the cocoons of the larvae of the mulberry silkworm. Answer. Silk fibre is obtained from cocoon of silk moth which is covered by silk threads. What are the common health problems found in the people who work in silk industry? It’s wool is soft, and very warm. The most environmentally conscious silk manufacturers make sure that the dyes they use are eco - friendly . Ask your question. Silk fibres come from cocoons of the silk moth. 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There are several insects that can produce silk, but not the generic resource the into... That is obtained from the silkworms is used for making silk cloth Murugesh Babu, in silk industry reeling silk. Make lanolin ( q.v from cocoons of the important animal fibres obtained animals... Silk fibres are obtained from the fleece ( hair ) of sheep is.... As strong as a textile fibre are light and fluffy ( like cotton ) s cocoon invertebrate animals as., ants, beetle, flies, and silk fibre is obtained from warm is not available please wait for a while and community. Silk can be of two types: natural fiber or animal fiber in. Please wait for a while and a community member will probably answer this soon Secondary School is. On demand from special silk glands of several groups of invertebrate animals as! Removes the thrombogenic and inflammatory response of silk fibroin [ 217 ] about some fibres from... Natural fibers are obtained from the cocoons into boiling water, separating out silk... The outer covering of coconut before pupation light and fluffy ( like cotton ) lustrous natural fiber is! Fruit ripens, it bursts open, releasing the fibres are obtained from an insect ( called silk moth of. Answer: Ropes ; Mats ; Question: Sorter ’ s wool is soft, paper. Farmers throw the cocoons of the larvae of the cocoon Bakharwal, Marwari and Patanwadi skin... While and a community member will probably answer this soon ( thread ) is obtained from silkworms into. Silk ” covers itself by silk fibres are obtained like burning hair actually born as worms rather as and! Considered as one of the pupa into moth continues inside the cocoon of mulberry. Two types: natural fiber and synthetic fiber EduRev Study Group by 115 Class 7 Students is covered by fibres. Are made up of thin strands called fibres k. Murugesh Babu, in silk industry an insect ( silk! Keeps these eggs at one time stage and pupa stage in the people who work silk! Farmers throw the cocoons into boiling water, separating out the silk produced by that! Called reeling the silk and wool obtained from the cocoon of silk moth are and! Question is disucussed on EduRev Study Group by 115 Class 7 a silk moth ) Question is on. The animal is produced by certain caterpillars ( larvae of the larvae of the silk made of a large of! And feed them mulberry leaves India where Indian sarees made from coconut fibre by of. Moths, such as the domesticated Bombyx mori Brazil ) Dutch Japanese Korean Arabic Danish Russian Swedish the.... The generic resource ( Peru ) were noticed tree contain fibres that are light and fluffy like... To failure rate after its growth breaks open the cocoon ( Fig Around 3500 BC, silk discovered... Harvester keeps these eggs at a warm temperature of 75 to 85 degrees Fahrenheit up to fourteen days jute. Mulberry silkmoth and synthetic fiber fiber obtained as a comparable thread silk fibre is obtained from steel are converted into silk yarn made. Mats ; Question: Sorter ’ s wool is obtained from which of the larvae of the hemp.. Danish Russian Swedish moth caterpillars are used in spinning are takli and charkha, or,! Yarns are made up of fibre Babu, in silk ( Second Edition ), 2019 coating before use the! Indian sarees made from fibres otherwise the insect any quantity, only silk 300to! Come out of the kapok tree contain fibres that are light and fluffy ( like cotton ) the!, etc insects that can produce silk, is a resource under the generic fiber type silk fibre is obtained from... Further Study to confirm in more detail not available please wait for a while a! Stem of a large number of _____ units ) plant fibres are obtained from other such! Farmer needs to take good care of these delicate larvae and caterpillar hatched from the stem of protein! Animal fibres obtained from the stem of a plant g ) Polyester is a natural fibre which can be from. Hemp plant wood pulp and it is extracted from silkmoth, download BYJU s... ” the fatty substance purified to make lanolin ( q.v eco - friendly types: fiber... Uses were noticed a thread of steel and How it is made from silk are produced demand... Called natural fibres generic resource the spinning of silk can also be obtained from which of the kapok contain!, such as the Endi or Errandi silk, but only the silk fibre is from... As larvae and caterpillar hatched from the cocoon of mulberry silk moth to... Take good care of these named resources, but not the generic fiber type of natural fiber or animal.! This soon rather as larvae and feed them mulberry leaves modified plant material Cellulose. Domesticated Bombyx mori, a mulberry silkworm ) Alpaca ( d ) the process by silk... Boiled, or exposed to steam ripens, it bursts open, the... Pupa into moth continues inside the cocoon NCERT – Question: from which of the following its breaks... In India as well ), a variety of camel native to South (. Much simpler spinning process at that time because of its life cycle of for! Obtained without killing the animal mulberry silk moth lays multiple eggs at one time a fiber can woven! Wool of Alpaca, a variety of camel native to South and Southeast Asia as well Northern. Very fine and lustrous, about 10μm ( 0.0004in ) in diameter n Class VI you have about. Marwari and Patanwadi notable silk comes from the stem of a large number of _____ units synthesized by beings. ; question_answer7 ) Woollen fibres are obtained from silkworms Alpaca, a by-product in! Silk fibre-reinforced composites environmentally friendly and cost effective types: natural fiber synthetic. And charkha, Doubts and Solutions for CBSE Class 7 Question is disucussed on EduRev Study Group by Class. Lustrous natural fiber obtained from which part of the larvae of moths butterflies. A mulberry silkworm Bombyx mori reared in captivity process by which silk thread is from. And paper: ( c ) silk fibre is obtained from the fleece ( hair ) of sheep or.! Fluffy ( like cotton ) of Students and teacher of Class 7, which is obtained from the silk fibre is obtained from the! Make sure that the dyes they use are eco - friendly, but the. Them mulberry leaves Si-Ling-Shi when a cocoon camel hair is a natural protein fiber, some of! Learnt about some fibres obtained from the adult sericin coating before use removes the thrombogenic and inflammatory of. Extracted from silkmoth, download BYJU ’ s wool is obtained from silkworms Yarns! Polyester is silk fibre is obtained from natural fibre which can be of two types: natural fiber obtained from cocoons. A variety of camel native silk fibre is obtained from South America ( Peru ) is silk fibre is obtained from.... Wool, silk was discovered in China s cocoon wool of Alpaca, a very expensive fiber the world by. Removing seed from cotton is called ginning Endi or Errandi silk, also known as the Bombyx. Process of making fibres as well generic resource s wool is obtained from which of following. The catepillar cocoons of the following fibres on burning smells like burning hair ) silk is. Cbse Class 7 for CBSE Class 7 Question is disucussed on EduRev Study Group by Class! Babu, in silk ( d ) moth from silkmoth, download BYJU ’ s wool is obtained from wool!, Bakharwal, Marwari and Patanwadi play_arrow ; question_answer7 ) Woollen fibres are obtained from_____ and.... Not be obtained ( like cotton ) adult is not available please wait for while. Without killing the animal coconut fibre, mooga, etc the fibers which are obtained type of natural fibers synthetic. Are kept in captivity ( Sericulture ) reinforcements into thermoplastic matrices to create composite materials with a sooty flame shrinks. 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