Some examples are cotton, silk, wool etc. 2. What are the common health problems found in the people who work in silk industry? Solution: (c) Silk is a natural fibre which is obtained from the cocoons of silk moths. Silk fibre is drawn from the cocoon of silkworm. Wool is obtained from the fleece of sheep or goat. f) Silk fibre is obtained from the stem of a plant g) Polyester is a natural fibre. Animal hair: Animal hair is a commonly used source to obtain animal fibres. g) Polyester is a natural fibre. ... From the given options choose the animal from which fleece cannot be obtained – sheep, goat, yak, cow; Cow. The further development of the pupa into moth continues inside the cocoon (Fig. The rearing of silkworms for obtaining silk is called sericulture. Name some fibres obtained from animals; Wool and silk. The silk fibre is made up of a protein. c) Jute is the outer covering of coconut. 3.9). 3 Fibre to Fabric I n Class VI you have learnt about some fibres obtained from plants. flax hemp 6. Fill in the blanks : a) Plant fibres are obtained from ___ and ___ b) Animal fibres are ___ and ___ Answers: a) Jute and cotton b) Silk … 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 … Answer: The fibres which are made from chemical substances or which are not obtained from the plant and animal sources are called synthetic fibres. Wool is obtained from the fleece fleece (hair) of sheep or yak. (i) Wool and silk are the animal fibres. 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. Question: Four different types of fibres are given to us. This covering is known as cocoon . Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. Silk fibres are obtained from which animal Get the answers you need, now! Silk is the strongest natural fibre. Silk Silk is a natural fibre which is obtained from an insect (called silk moth). The silk fibre obtained from the cocoon of mulberry silk moth are soft and lustrous. Which of the following is not a type of silk? The process of taking out threads from the cocoon for use as silk is called reeling the silk. b) Spinning is a process of making fibres. Sericulture Sericulture means ‘silk farming’. 3.9). Question 4. Fibres are also made from chemical substances, which are not obtained from plant or animal sources. Originally, it was used by emperors only. Let us find out how is silk obtained … Cotton was first produced in (a) Egypt (b) India (c) Europe (d) China True. Join now. (g) Polyester is a natural fibre. (b) Jute is the outer covering of coconut. So, silk fibres are also animal fibres. Out of these, two fibres (1 and 2) are obtained from plants and other two (3 and 4) fibres are obtained from animals. Reeling is done in special machines, which unwind the threads or fibres of silk from the cocoon. Silkworm is reared to obtain silk. How is Silk Obtained from Cocoon of Silkworms? (iv) Silk moths spin the silk fibres. 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) Woollen shawl (b) Silk scarf (c) Animal fur cap (d) Leather jacket. 19. ANIMAL FIBRES • These include wool and silk. The silk fibres separate out. jute and cotton) and mineral fibres (e.g. The silk fiber is the only fiber obtained from an insect (secretion) – silkworm. 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. Answer. It is a natural silk and is an animal fibre. Natural fibres can again be divided into two types based on their source i.e. Pashmina refers to a fine variant of spun cashmere, the animal-hair fibre forming the downy undercoat of the Changthangi goat. 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. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Silkworms spin the silk fibres. You also learnt that wool and silk fibres are obtained from animals. 3 Fibre to Fabric MULTIPLE CHOICE QUESTIONS 1. Question 5. Wool comes from mainly from fleece of sheep. B) Silk done clear. C) done clear. Silk fibres are obtained from silkworms. It is also obtained from the hair of rabbits, yak and camels. Animal Hair/Wool Fibers. Which of the following would be the right gift for her to buy? Question 19. Silk fibres come from cocoons of the silk moth. (F) Silk fibre is obtained from the stem of a plant. (iii) Pashmina shawls woven from the wool obtained from the under fur of Kashmiri goats. How is silk fibre obtained? Answer. silk fibres and turns into pupa. 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. 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. Silk is another important animal fiber. 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? Can you imagine that the soft silk yarn is as strong as a comparable thread of steel! Play quiz on "Natural Fibres -Plant and Animal fibres" here: Quiz On Natural Fibres. a)Wool b)silk c) jute D )pashmina roopal6582 roopal6582 20.05.2019 Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. silk fibres and turns into pupa. Answer: (a) Woollen shawl. Natural fibres include animal fibres (e.g. 1. Do you know which part of the sheep’s body yields fibres? A) Cotton done clear. asbestos). The further development of the pupa into moth continues inside the cocoon (Fig. 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 ). 3. Natural fibres are the fibres that are obtained from plants, animals or mineral sources. 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. 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. The most common variety of silk is mulberry silk. Sheep Wool. Animal fibres: These are the fibres that are obtained from animals. 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. ajith1826 ajith1826 12.06.2020 Environmental Sciences Secondary School Silk fibres are obtained from which animal 2 (ii) Silk is obtained from the fleece of sheep. 1. Log in. (a) Woollen shawl (b) Silk scarf (c) Animal fur cap Silk fibre is obtained from silk worms. History of Silk: Silk was discovered in China; around 3500 BC. Silk fibres are used for weaving silk cloth. In common parlance today, pashmina may refer either to the material or to the variant of the Kashmir shawl that is made from it. mention any two. A) done clear. (C) False : Jute is obtained from jute plant (Corchorus). Silkworms spin cocoons for the vulnerable pupa stage. plants and animals. The word pashm means "wool" in Persian, but in Kashmir, pashm referred to the raw unspun wool of domesticated Changthangi goats. The hair of animals like sheep, horses and goats are commonly used as animal fibres. e) Weaving of yarn makes a piece of fabric. Join now. B) done clear. Ask your question. 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. (v) Silk fibre is chemically a protein. These are called synthetic fibres. Silk fibre is obtained at which of the following stage of its life cycle? 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. SOLUTION: (A) True (B) False : Spinning is the process of making yarn from fibres. wool and silk), vegetable fibres (e.g. 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. a) Yarn is made from fibres. Log in. Question: Explain how jute is obtained from the jute plant. 3. SILK. Which of the following is an animal fibre? Wool and silk fibres are obtained from animals. The rearing of silkworms for obtaining silk is called: (a) moriculture (b) apiculture (c) sericulture (d) silviculture. Can you imagine that the soft silk yarn is as strong as a comparable thread of steel! Silk is a natural fibre which is obtained from an insect called silk moth or silkworm. Animal fibres are known as silk fibres. In fact, the best-known silk fibers are obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity. (vi) The most common silk moth is the mulberry silk moth. For example, polyester, nylon, and acrylic etc. The rearing of silkworms for obtaining silk is called (a) cocoon (b) silk (c) sericulture (d) silviculture 2. Question 9. Silk worm spins silk. Silk became a prized possession because of its fine quality and luster. This covering is known as cocoon . (D) True (E) True (F) False : Silk fibre is obtained from silkworm (animal). (a) Mulberry silk (b) Tassar silk (c) Mooga silk (d) Moth silk 3. Question 3. 1. It is obtained from the cocoons of mulberry silkworm and is made up of protein. Which of the following would be the right gift for her to buy? Question 23. The process by which silk is produced is called sericulture. The species of silk moth which spin the silk fibres is Bombyx mori. Silk fibre: Silk fibres are the fibres that are obtained from the cocoons of the silkworm, typically of the species Bombyx mori. Silk fibres are used for weaving silk cloth. Answers: a) – True, b) – False, c) – False, d) – True e) – True, f) – False, g) – False. Living Science Solutions for Class 7 Science Chapter 4 Animal Fibres are provided here with simple step-by-step explanations. Click here 👆 to get an answer to your question ️ Which of the following is not a animal fibre? Thus, the fabric is a natural animal fibre. Examples of Natural Fibres. f) Silk fibre is obtained from the stem of a plant. Here you will learn in-depth about how is silk obtained from silkworm, and different types of silk. Fur and leather are animal products which are obtained from the skin of animals by killing them.