Some examples of the plant fibres are given below: 1. Silk fibres are obtained from the silkworms which spin the fibres to form a cocoon in the pupa stage. Fibers: All cloth materials are made up of long, narrow, thin structures called fibers.Fibers are obtained from natural as well as manmade sources. Cotton is a soft fibre that is obtained from cotton plants and grows as a boll. This fibre is obtained from the silk cotton tree, also called kapok. Man made sources:Polyester, nylon, rayon etc. Name two items that are made from coconut fibre. It is produced from flowering plants in the genus Corchorus, which is in the mallow family Malvaceae.The primary source of the fiber is Corchorus olitorius, but it is considered inferior to Corchorus capsularis. " Among microscopic tests and chemical tests, microscopic tests are mainly used for natural fibre. Jute is a long, soft, shiny bast fiber that can be spun into coarse, strong threads. The test identifies the natural fibres more easily as compared to manmade ones. Natural sources: Cotton, jute, silk, wool etc. (g) Polyester is a natural fibre. The process of removing seed from cotton is called ginning. (a) True (b) False (c) False (d) True (e) True (f) False (g) False. The fibre plants are: 1. The fibres are obtained from the leaves and are bast fibres. In India, jute is mainly grown in West Bengal, Bihar and Assam. Question 4 From which parts of the plant cotton and jute are obtained? Bast fibre, soft, woody fibre obtained from stems of dicotyledonous plants (flowering plants with net-veined leaves) and used for textiles and cordage.Such fibres, usually characterized by fineness and flexibility, are also known as “soft” fibres, distinguishing them from the coarser, less flexible fibres of the leaf, or “hard,” fibre… The jute plant is normally harvested when it is at flowering stage. Jute fibre is obtained from the stem of the jute plant. 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. 3. Silk moth feeds on which plant leaves? It is a synthetic fibre- artificially made List of Plant Fibers. The fruits of the kapok tree contain fibres that are light and fluffy (like cotton). Silk cotton Silk cotton is obtained from kapok tree. Plants including cotton, jute, flax and hemp are used to obtain plant fibres. It grows easily to a height of 4 m without agrochemicals and captures large quantities of carbon. This fiber is bio-degradable and hence eco-friendly. Answers: a) – True, b) – False, c) – False, d) – True e) – True, f) – False, g) – False. Jute is the outer covering of coconut. Jute" is the name of the plant or fiber used to make burlap, hessian or gunny cloth. Hemp fibre: Hemp fibre is obtained from the stem of (b) Animal fibres are_____ and_____ . f) False, silk fibre is not obtained from the stem of a plant. Bast fibers. (False) d) The process of removing seed from cotton is called ginning. Plants are dioecious, and yield three products namely bast fibre from its stem, oil from its seeds, and narcotics (Bhaang, Charas and Ganja) from its leaves and flowers. Silk fiber is obtained from the stem of a plant. A) done clear. The following points highlight the three important fibre yielding plants of India. c) Jute is the outer covering of coconut. It is obtained from the cocoon of the silkworm larva, in the process known as sericulture properties it’s a fine continuous strand unwound from the cocoon of a moth caterpillar known as the silkworm. Q 5. With 70% of cellulose, hemp is an excellent heat conductor, it absorbs dyes adequately, it blocks UV rays, it is very resistant to … Ramie, fiber plants grow along Chang Jiang river, edible with anti bacteria function. (e) Silk fibre is obtained from the stem of a plant. (e) Silk fibre is obtained from the stem of a plant. (ii) Fruit of cotton plant is about the size of lemon. Q.3. Question 3. The fruits of this tree contain fibres. D) Silk cotton fibre: Silk cotton is a silky, fluffy fibre obtained from the fruit of the silk-cotton tree, also called kapok. (i) The process of making yam from fibre is called weaving. Many plant fibres are produced as field crops. Spinning is a process of making fibre. Hemp Another important plant fibre is hemp. (f) Silk fibre is obtained from the stem of a plant. B) done clear. (Stem-skin fibers) Esparto, a fiber from a grass; Jute, widely used, it is the cheapest fiber after cotton C) done clear. Fibers obtained from banana leaves had about 26 % cellulose, 17 % hemicellulose, and 25 % lignin, but the fiber properties are not reported [07Bil]. Flax is also a plant that gives natural fibres. In India, jute is mainly grown in West Bengal, Bihar and Assam. Jute fibre is obtained from the stem of the jute plant. In woven silk, the fibre's triangular structure acts as a prism that refracts light, giving silk cloth its highly prized "natural shimmer". The stems rot and fibres are separated by hand. b) Spinning is a process of making fibres. (False) c) Jute is the outer covering of coconut. SOLUTION: Ropes and doormats are made from coconut fibre. f) Silk fibre is obtained from the stem of a plant. Items made from coir (coconut fibre) are: (i) Coir Mattresses (ii) Mats (iii) Baskets DIRECTIONS: Read the following three statements carefully and choose the correct option. Polyester is a natural fiber. It is cultivated during the rainy season. Cotton and jute are examples of fibres obtained from plants. Answer: 1 True, 2 False, 3 False, 4 True, 5 True, 6 False, 7 False Hemp fibre is obtained from the stems of hemp plant. Lastly, surface fibers are harvested through ginning which is where a machine removes the fibers from other plant material. b) Animals fibres are silk and wool. SILK FIBRE silk is a natural fiber that can be woven into textiles. (iii) Silk fibre is obtained from adult of silk moth. Answer. Silk: It's filament is a continuous thread of great tensile strength measuring from 500 to 1 500 metres in length, with a diameter of 10-13 microns. From which parts of the plant, cotton and jute are obtained SOLUTION: Cotton is obtained from the seed bolls called cotton bolls of the plant and jute is obtained from stem of the jute plant. A class name for various genera of fibers (including filaments) of: (1) animal (i.e.,silk fiber, wool fiber) (2) mineral (i.e., asbestos fiber) or Answer: Cotton is obtained from the fruits of the cotton plant, called cotton balls. B) Grape leaves done clear. The fibres are obtained from the stem of the banana plant after the fruit is ... what was earlier considered to be agricultural waste is now used to produce good quality silk-like fibre yarn. Explanation: a)& b) Process of making yarn from fibres is called spinning. c) We get jute fibres from the outer layer of a stem of the jute plant. Silk cotton is used commonly used as stuffing in pillows, sleeping bags and life jackets. The process used for making plant fibre from the stem of a plant by keeping them in a stgnant water for few days is called retting. When the fruit ripens, it bursts open, releasing the fibres. The best fiber of banana extract is from the bark of banana tree that is easily procured. It is also obtained from the hair of rabbits, yak and camels. It is commonly used for stuffing cushions and mattresses, and for other purposes that require a soft, voluminous filling. Question 5 Name two items that are made from coconut fibre. it is the longest and thinnest natural Answer: Ropes and jute bags. The stems rot and fibres are Silk is a continuous filament fiber. When the fruit ripens, it bursts open, releasing the fibres. are obtained from natural sources plants or materials. g) Polyester is a natural fibre. Ans. One of the most relevant features of this plant is that it captures large quantities of carbon. Hemp fiber is obtained from the stem of the plant. Silk fibres are obtained from silkworms. Weaving of yarn makes a piece of fabric. e) Weaving of yarn makes a piece of fabric. Answer: a) True b) False c) False d) True e) True f) False g) False. Jute fibre is obtained from the stem of the jute plant (Fig 3.8). This fibre is obtained from the silk cotton tree, also called kapok. Answer: (i) Jute Sack bags (ii) Ropes Q8: Name two items that are made from coconut fibre. Ans. It is cultivated during the rainy season. Jute is one of the most affordable natural fibers, The jute fiber comes from the stem and ribbon (outer skin) of the jute plant. d) The process of removing seed from cotton is called ginning. Flax, plant of the family Linaceae, cultivated both for its fiber, from which linen is made, and for its nutritious seeds, from which linseed oil is obtained. Hemp: Hemp fibres are obtained from the stem of the hemp plant. The fibre is long, strong and durable but lacks flexibility and elasticity, and is used for the manufacture of ropes, twine, carpets, bags, nets, etc. The stems of the harvested plants are immersed in water for a few days. Silk fibre is drawn from the cocoon of silkworm. The jute plant is normally harvested when it is at flowering stage. Fiber crops. (True) b) Spinning is a process of making fibres. g) False, polyester is not a natural fibre. The fibers are first extracted by retting. Yarn is made from fibre. Concept insight: Silk fibre is obtained from the cocoon of a silk moth. f) Silk fibre is obtained from the stem of a plant g) Polyester is a natural fibre. Synthetic fibres are very similar in appearance and the increase in the number of varieties makes it a little tough to distinguish the fibres even under a microscope. g) Polyester is a natural fibre. Cotton. Answer: Coir is the natural fibre obtained from coconut husk. It has good absorbency, low conductivity and dyes easily. 3. Silk fibre is obtained at which of the following stage of its life cycle? Wool and silk fibres are obtained from animals. (a) cotton plants, jute plants (b) wool, silk… Fiber to Fabric 1. f) Silk fibre is obtained from the stem of the plant. In addition to the stems, fibers have also been obtained from the leaves of the banana plant. The most important components of fibres are cellulose (77%), pectin (1.4%) and waxes (1.4%). Q7: Name two items that are made from Jute fibre. Answer: a) Yarn is made from fibres. Hemp: Hemp fibres are obtained from the stem of the hemp plant. Jute fibre is obtained from the stem of the jute plant. Fill in the blanks : a) Plant fibres are obtained from ___ and ___ b) Animal fibres are ___ and ___ Answers: a) Jute and cotton b) Silk … These fibres are light and fluffy. The Process of making the fibre (Kijōka-bashōfu or Banana cloth) Banana fiber harvested from the pseudostems and leaves of the plant have been used for textiles in Asia since at least the 13th century. Though flax has lost some of its value as a commercial fiber crop, flaxseed has grown in popularity as a health food. Fill in the blanks: (a) Plant fibres are obtained from_____ and_____ . (g) Polyester is a natural fibre. 2. The stems of the harvested plants are immersed in water for a few days. 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