Join now. Which of the following would be the right gift for her to buy? Silk fibers are produced on demand from special silk glands of several groups of invertebrate animals such as silk moths. The silk fibre is made up of a protein. mention any two. Wool is obtained from the fleece of sheep or goat. These MCQ Questions on Synthetic Fibres and Plastics Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Answer. Here you will learn in-depth about how is silk obtained from silkworm, and different types of silk. Reeling is done in special machines, which unwind the threads or fibres of silk from the cocoon. 2. Sheep Wool. It is obtained from the cocoons of mulberry silkworm and is made up of protein. C) done clear. This covering is known as cocoon . Wool is the common name applied to the soft, curly fibers obtained chiefly from the fleece of domesticated sheep, and used extensively in textile manufacturing. Answers: a) – True, b) – False, c) – False, d) – True e) – True, f) – False, g) – False. Name some fibres obtained from animals; Wool and silk. The process by which silk is produced is called sericulture. Silk fibre is drawn from the cocoon of silkworm. SOLUTION: (A) True (B) False : Spinning is the process of making yarn from fibres. Natural fibres include animal fibres (e.g. Fibres are also made from chemical substances, which are not obtained from plant or animal sources. Silk fibre is obtained from silk worms. These are called synthetic fibres. f) Silk fibre is obtained from the stem of a plant. Play quiz on "Natural Fibres -Plant and Animal fibres" here: Quiz On Natural Fibres. (g) Polyester is a natural fibre. Animal hair: Animal hair is a commonly used source to obtain animal fibres. The hair of animals like sheep, horses and goats are commonly used as animal fibres. Thus, the fabric is a natural animal fibre. Click here 👆 to get an answer to your question ️ Which of the following is not a animal fibre? Animal Fibres - Silk | Home | | Pharmacognosy | Chapter: Pharmacognosy and Phytochemistry : Fibres, Sutures and Surgical Dressings Fibres obtained from the cocoons spun by the larvae Bombyx mori Linn., belonging to family Bombycidae/Moraceae. Question 3. Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. Question 23. d) The process of removing seed from cotton is called ginning. Out of these, two fibres (1 and 2) are obtained from plants and other two (3 and 4) fibres are obtained from animals. Can you imagine that the soft silk yarn is as strong as a comparable thread of steel! The most common variety of silk is mulberry silk. 3 Fibre to Fabric MULTIPLE CHOICE QUESTIONS 1. This covering is known as cocoon . Silk is the strongest natural fibre. Solving the Synthetic Fibres and Plastics Multiple Choice Questions of Class 8 Science Chapter 3 MCQ can be of extreme help as you will be aware of all the concepts. Natural fibres are the fibres that are obtained from plants, animals or mineral sources. The silk fibre obtained from the cocoon of mulberry silk moth are soft and lustrous. Answer: The fibres which are made from chemical substances or which are not obtained from the plant and animal sources are called synthetic fibres. Question: Four different types of fibres are given to us. 19. For example, polyester, nylon, and acrylic etc. B) done clear. Do you know which part of the sheep’s body yields fibres? Which of the following is an animal fibre? Silk fibre: Silk fibres are the fibres that are obtained from the cocoons of the silkworm, typically of the species Bombyx mori. 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? You also learnt that wool and silk fibres are obtained from animals. Answer: (a) Woollen shawl. 1. So, silk fibres are also animal fibres. Silk fibres are obtained from which animal Get the answers you need, now! The rearing of silkworms for obtaining silk is called sericulture. Animal fibres are known as silk fibres. Examples of Natural Fibres. 1. Pashmina refers to a fine variant of spun cashmere, the animal-hair fibre forming the downy undercoat of the Changthangi goat. flax hemp 6. f) Silk fibre is obtained from the stem of a plant g) Polyester is a natural fibre. In fact, the best-known silk fibers are obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. A) done clear. The process of taking out threads from the cocoon for use as silk is called reeling the silk. silk fibres and turns into pupa. 3.9). (v) Silk fibre is chemically a protein. Silk fibres are used for weaving silk cloth. plants and animals. (a) Mulberry silk (b) Tassar silk (c) Mooga silk (d) Moth silk 3. Can you imagine that the soft silk yarn is as strong as a comparable thread of steel! ... From the given options choose the animal from which fleece cannot be obtained – sheep, goat, yak, cow; Cow. VEGETABLE FIBRES These include cotton the most widely used of all textile fibres,flax,hemp,jute etc.the bas of the vegetable fibres Is cellulose which is the material used by nature as a structural material in the plan world. jute and cotton) and mineral fibres (e.g. Wool is obtained from the fleece fleece (hair) of sheep or yak. Log in. The word pashm means "wool" in Persian, but in Kashmir, pashm referred to the raw unspun wool of domesticated Changthangi goats. Log in. Silk fibres come from cocoons of the silk moth. Natural fibres can again be divided into two types based on their source i.e. Answer. B) Silk done clear. These solutions for Animal Fibres are extremely popular among Class 7 students for Science Animal Fibres Solutions come handy for quickly completing your homework and preparing for exams. 3. Question 5. wool and silk), vegetable fibres (e.g. (ii) Silk is obtained from the fleece of sheep. Which of the following is not a type of silk? Wool and silk fibres are obtained from animals. Fur and leather are animal products which are obtained from the skin of animals by killing them. Wool comes from mainly from fleece of sheep. In commercial use, silk is almost entirely limited to filaments from the cocoons of domesticated silkworms (caterpillars of several moth species belonging to the genus Bombyx ). (F) Silk fibre is obtained from the stem of a plant. In common parlance today, pashmina may refer either to the material or to the variant of the Kashmir shawl that is made from it. asbestos). Silk worm spins silk. (C) False : Jute is obtained from jute plant (Corchorus). Living Science Solutions for Class 7 Science Chapter 4 Animal Fibres are provided here with simple step-by-step explanations. Cotton was first produced in (a) Egypt (b) India (c) Europe (d) China (vi) The most common silk moth is the mulberry silk moth. Silk became a prized possession because of its fine quality and luster. b) Spinning is a process of making fibres. 3.9). The species of silk moth which spin the silk fibres is Bombyx mori. (iii) Pashmina shawls woven from the wool obtained from the under fur of Kashmiri goats. Originally, it was used by emperors only. Silkworms spin the silk fibres. Silkworms spin cocoons for the vulnerable pupa stage. How is silk fibre obtained? True. Man-made fibres are either regenerated or synthetic; viscose rayon, based on regenerated cellulose, is man-made but not synthetic while polyester, polypropylene and nylon are all synthetic fibres. Sericulture Sericulture means ‘silk farming’. Solution: (c) Silk is a natural fibre which is obtained from the cocoons of silk moths. The further development of the pupa into moth continues inside the cocoon (Fig. The cultivation of silkworms to produce silk is called sericulture/silk farming.Before we discuss the process of obtaining silk, let us know the life cycle of the silk … 3. It is a natural silk and is an animal fibre. The rearing of silkworms for obtaining silk is called: (a) moriculture (b) apiculture (c) sericulture (d) silviculture. (D) True (E) True (F) False : Silk fibre is obtained from silkworm (animal). 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. 1. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. The further development of the pupa into moth continues inside the cocoon (Fig. Silk fibres are used for weaving silk cloth. Animal fibres: These are the fibres that are obtained from animals. History of Silk: Silk was discovered in China; around 3500 BC. Silk Silk is a natural fibre which is obtained from an insect (called silk moth). The silk fibres separate out. 3 Fibre to Fabric I n Class VI you have learnt about some fibres obtained from plants. c) Jute is the outer covering of coconut. The rearing of silkworms for obtaining silk is called (a) cocoon (b) silk (c) sericulture (d) silviculture 2. How is Silk Obtained from Cocoon of Silkworms? Silk is another important animal fiber. (a) Woollen shawl (b) Silk scarf (c) Animal fur cap (d) Leather jacket. Join now. Question: Explain how jute is obtained from the jute plant. Let us find out how is silk obtained … What are the common health problems found in the people who work in silk industry? Which of the following would be the right gift for her to buy? Fill in the blanks : a) Plant fibres are obtained from ___ and ___ b) Animal fibres are ___ and ___ Answers: a) Jute and cotton b) Silk … A) Cotton done clear. It is also obtained from the hair of rabbits, yak and camels. Silkworm is reared to obtain silk. Silk fibre is obtained at which of the following stage of its life cycle? Silk, Cashmere, Shearling, and Other Animal-Derived Clothing Share Tweet Donate Minks, foxes, and chinchillas usually come to mind when the subject of fur comes up, but countless other species are also exploited to make clothing. Silk is a natural protein fiber, some forms of which can be woven into textiles.The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. a)Wool b)silk c) jute D )pashmina roopal6582 roopal6582 20.05.2019 (b) Jute is the outer covering of coconut. ajith1826 ajith1826 12.06.2020 Environmental Sciences Secondary School Silk fibres are obtained from which animal 2 (i) Wool and silk are the animal fibres. SILK. g) Polyester is a natural fibre. Silk fibres are obtained from silkworms. The silk fiber is the only fiber obtained from an insect (secretion) – silkworm. e) Weaving of yarn makes a piece of fabric. Silk is a natural fibre which is obtained from an insect called silk moth or silkworm. Question 9. Mulbery silk, Tasar Silk and Mooga silk are the varieties of silk produced by different silk worms whereas Moth silk is not a variety of silk. Question 4. ANIMAL FIBRES • These include wool and silk. Ask your question. 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