The fibres which are made from chemical substances or which are not obtained from the plant and animal sources are called synthetic fibres. Wool - Obtained from fleece/ hair of some animals sheep/ goat/ rabbit/ yak/ camel - Soft to touch - Traps air in the spaces present, air is a poor conductor of heat and so keeps us warm - easily dyed in different colors. By-products. The fibres are of two types:1 Natural fibres 2 Synthetic fibres. Silk came to various parts of the world from China. Names of Animal Fibres. Fibres are long chains of carbohydrates that are neither digested nor absorbed in the human small intestine. Obtained from various parts of the plant. Natural silk is an animal fibre. In India, cotton is grown in Gujarat, Maharashtra, Andhra Pradesh, Punjab, Haryana, Karnataka, Tamil Nadu, Rajasthan, Orissa and Madhya Pradesh. 3.3 SOME PLANT FIBRES Cotton Have you ever made wicks for oil lamps? 3. These fibres are obtained from different animal sources. b) Spinning is a process of making fibres. How is wool obtained from sheep?3. Natural fibres further can be classified in two categories according to its source of generation. All questions and answers from the NCERT Book of Class 7 Science Chapter 3 are provided here for you for free. She was shocked and uttered ‘Hey … ! What are Fibres and Fabrics? For example, polyester, nylon, and acrylic, etc. Do you know which part of the sheep’s body yields fibres? 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: 1. Synthetic fibres are used for making fabrics (or cloth). Used for animal feed as well as human nutrition, fibres form part of Tereos’ by-products. Which of the following would be the right gift for her to buy? Another animal fibre you all are familiar with is silk. Chapter 3 - Fibre to Fabric. Caterpillar of silkworm spins fiber which is mainly made up of two types of protein (sirisine and fibroin) and is very strong. Summary Wool fibers are animal fibers, which are obtained from sheep. Explain the life cycle… Fibres. The silk fiber is the only fiber obtained from an insect (secretion) – … Answer. (a) Woollen shawl (b) Silk scarf (c) Animal fur cap (d) Leather jacket. The fibers extracted from these animals greatly differ in terms of biological, chemical and physical features. Learn about animal fibres with examples and FAQs here. Animal Fibres from sheep, alpaca, camels, rabbits, goats & silk moths. Natural fibers – The fibers which are produce from natural sources called natural fibres (cotton and jute from plant, silk and wool from animal.) These fibres are usually made up of different kinds of proteins. Can you name the fibre we get from sheep and goat? Animal fibres → Wool and silk fibres are obtained from animals. Name two items that are made from coconut fibre. Fibres obtained from the cocoons spun by the larvae Bombyx mori Linn., belonging to family Bombycidae/Moraceae. Natural Fibres can be categorised in two different types: Plant Fibres. Wool is the most commonly used animal fibre. SILK . The fibres obtained from animals are generally textile. 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. Answer in Detail1. Wool is obtained from the fleece (hair) of sheep or yak. Once these animal fibres are extracted they are generally knitted or woven for forming beautiful animal fabrics. The second stage began with the use of animal fibres especially wool and silk. Silk fibres come from cocoons of the silk moth. I work in the reeling centre. Animal textile fibers commercially used today are generally obtained from the mammals such as Sheep, Goat, Angora Rabbit, Lama, Alpaca, Vicuna, Guanaco, Camel, Yak, Northern American Buffalo, and Musk Ox. Question: Explain how jute is obtained from the jute plant. Silkworms & silkmoths. These fibres are generally produced from the animal’s fur, skin, hair, or even secretion in the case of the silkworm. Wool, after shearing, it is graded and then scoured with alkaline solution. Explain. 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. Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute. Animal fibres: Fibres obtained from animal sources are called animal fibres. Due to this, woollen fabrics keep us more warm during cold, winter days. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. You also learnt that wool and silk fibres are obtained from animals. These are the only natural fibers, which have considerable low strength. These fibres are not obtained from plant or animal sources. → Wool is obtained from the fleece (hair) of fleece sheep or yak. That’s right, we get wool from their hair. Some of the examples of synthetic fibres are nylon, polyester (like terylene) and polyacrylic (like Orion). e) Weaving of yarn makes a piece of fabric. 2. Sheep are the principal source of natural animal fibre and there are more than 200 breeds of sheep worldwide. certain fibres are not made from natural sources. Fibres are the materials, which are available in the form of thin, continuous and flexible strands spun into yarn and made into fabrics. Mohair fibre is obtained from the fleece of Angora goat, originally from Anatolia. 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. Silk. What are you doing? The annual yield per animal ranges from a few grams to about 0.5 kilogram. Types of Fibres, Fibre to Fabric, Class 6. c) Jute is the outer covering of coconut. LET US KNOW ABOUT SOME ANIMAL FIBRES: WOOL; Wool is obtained from the fleece (hairy growth) of sheep and other wool yielding animals like Yak, Camel, Kashmiri Goat, Llama, Alpaca, Vicuna, Guanaco, etc.These animals have a thick coat of hair on their bodies to trap a lot of air. Most of this down fibre is plucked or combed out by hand during the molting season. Some examples of synthetic fibres are polyester, nylon and acrylic. Wool is obtained from the fleece (hair) of sheep or yak. 1. (g) Polyester is a natural fibre. Animal Fibres - Silk | Home | | Pharmacognosy | Chapter: Pharmacognosy and Phytochemistry : Fibres, Sutures and Surgical Dressings. Animal fibres are the natural fibres that can be sourced to animals. g) Polyester is a natural fibre. The downy undercoat is made up of the fine, soft fibre commonly called cashmere, which ranges from 2.5 to 9 cm (1 to 3.5 inches) long. These fabrics are then used for making our dresses and for other domestic purposes like curtains, etc. 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. 3 Fibre to Fabric I n Class VI you have learnt about some fibres obtained from plants. Fibre to Fabric NCERT – Question: Sorter’s disease is an occupational hazard. 22 Animal Fibre Mahaboobnagar district. Artificial silk is obtained from wood pulp and it is made up of modified plant material ‘cellulose’. Numerous scientific studies have confirmed their importance in maintaining health and preventing illness. Animal Fibres Synthetic fibres- such fibres are Obtained from Synthetic chemical sources (nylon and rayon they are prepared from chemical process) It is the secretion of an insect called the silk worm. Then it is subjected to next process depending upon whether it is meant for worsted purpose or woolen products. Wool is a modified form of hair that grows with a waviness. Answer: (a) Woollen shawl. Usually in a very bright silver white, sometimes it may be ash-grey, rosy, brown or black. These are called synthetic fibres. Biological Source . Camel fibre. f) Silk fibre is obtained from the stem of a plant. Silk fibres come from cocoons of the silk moth. Rabbits have coats consisting of both long, protective guard hairs and a fine insulating undercoat. The fibres which are obtained from natural sources like plants and animals are called natural fibres.The fibres which are prepared from chemical substances in industry are called synthetic fibres. Do you know which part of the sheep’s body yields fibres? These fibres can not be produced by any type of chemical process. Question 9. Types of Fibre There are two types of fibres classified accord substances, which are not obtained from plant or animal sources. A - Animal fibres: The natural fibres obtained from animals or insects are known as animal fibres. SOLUTION: (A) True (B) False : Spinning is the process of making yarn from fibres. Find an answer to your question A. Alpaca to Yak . Neelima saw cocoons being boiled in water. We are boiling cocoons to get silk fibre. a) Yarn is made from fibres. For example, polyester, nylon, and acrylic, etc. Read more about these on the sheep breeds page. Because of the waviness of wool, the woollen fabrics have a greater bulk (than cotton fabrics) and hence trap more air. Wool can also be obtained from the hair of rabbits and camels. Cotton Fibres: Cotton fibre is obtained from cotton plants that grow in black soil in a warm climate. Fabrics are defined as a cloth material made by knitting or weaving or of threads together. Some of our clothes are made from yarn derived from animal fibres . 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. Wool is the soft, wavy (or curly) hair which covers the body of a sheep. Made of proteins eg wool and silk. These are called synthetic fibres . Explain the process of making yarn from fibre. The fleece of this animal is made of wool fibres: the most precious hair is long, between 12 and 25 centimetres, slightly curly and bright like silk. Example: Wool and Silk. For example, polyester, nylon, and acrylic etc. The third stage in the history of clothing began in the late 19th century with the development of man-made or synthetic fibres like rayon, nylon and polyester. → Wool is derived from these hairy fibres. d) The process of removing seed from cotton is called ginning. Answer. (D) True (E) True (F) False : Silk fibre is obtained from silkworm (animal). Sheep. You also learnt that wool and silk fibres are obtained from animals. TYPE OF FIBRES. Answer: The fibres which are made from chemical substances or which are not obtained from the plant and animal sources are called synthetic fibres. These are a type of natural fibres as they are obtained from nature. Wool → Wool comes from sheep, goat, yak and some other animals who are having hair on their body. Rabbit hair, animal fibre obtained from the Angora rabbit and the various species of the common rabbit. From which parts of the plant cotton and jute are obtained? This cotton wool is also used for filling mattresses, quilts or pillows. The fibre of the Angora rabbit (so named for the resemblance of its pelt to that of the Angora (F) Silk fibre is obtained from the stem of a plant. Fibres obtained from the cocoons spun by the larvae Bombyx mori Linn., belonging to family Bombycidae/Moraceae. Iranian cashmere, however, is obtained by shearing. NCERT Solution for Class 6 Science. “Textile fibres directly obtained from nature are called natural fibres”. Animals that yield wool → Breeds of sheep are found in different pa Answer: The jute plant is normally harvested at flowering stage. All questions and answers from the Living Science 2019 2020 Book of Class 7 Science Chapter 4 are provided here for you for free. Wool. 2. Silk fibre is obtained from: (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. 3 Fibre to Fabric I n Class VI you have learnt about some fibres obtained from plants. Some examples of synthetic fibres are polyester, nylon and acrylic. What do you use for making these wicks? Silk fibres come from cocoons of the silk moth. Animal fibres. (C) False : Jute is obtained from jute plant (Corchorus). Fibres are also made from chemical substances, which are not obtained from plant or animal sources. Differentiate between plant and animal fibres.2. 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