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. " Concept insight: Silk fibre is obtained from the cocoon of a silk moth. (a) cotton plants, jute plants (b) wool, silk… Answer: Coir is the natural fibre obtained from coconut husk. The jute plant is normally harvested when it is at flowering stage. Q 5. 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. The fruits of this tree contain fibres. (e) Silk fibre is obtained from the stem of a plant. Jute fibre is obtained from the stem of the jute plant (Fig 3.8). Hemp fibre: Hemp fibre is obtained from the stem of Q7: Name two items that are made from Jute fibre. 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. (A) stem, seed (B) wool, silk Q 4. The fibre plants are: 1. This fiber is bio-degradable and hence eco-friendly. 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. g) Polyester is a natural fibre. In India, jute is mainly grown in West Bengal, Bihar and Assam. It is cultivated during the rainy season. 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. Answer: a) True b) False c) False d) True e) True f) False g) False. The stems of the harvested plants are immersed in water for a few days. SILK FIBRE silk is a natural fiber that can be woven into textiles. 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… Question 5 Name two items that are made from coconut fibre. The fruits of the kapok tree contain fibres that are light and fluffy (like cotton). 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. Weaving of yarn makes a piece of fabric. C) done clear. It is also obtained from the hair of rabbits, yak and camels. Answer: Ropes and jute bags. Man made sources:Polyester, nylon, rayon etc. d) The process of removing seed from cotton is called ginning. 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. Question 3. are manmade material used for making clothes. Ans. Some examples of the plant fibres are given below: 1. 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. 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. Spinning is a process of making fibre. Silk cotton Silk cotton is obtained from kapok tree. The fruits of the kapok tree contain fibres that are light and fluffy (like cotton). Answer: 1 True, 2 False, 3 False, 4 True, 5 True, 6 False, 7 False Hemp Another important plant fibre is hemp. 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. c) We get jute fibres from the outer layer of a stem of the jute plant. Answer. Answer: Cotton is obtained from the fruits of the cotton plant, called cotton balls. Hemp: Hemp fibres are obtained from the stem of the hemp plant. Cotton. This fibre is obtained from the silk cotton tree, also called kapok. Jute is a long, soft, shiny bast fiber that can be spun into coarse, strong threads. List of Plant Fibers. (True) b) Spinning is a process of making fibres. When the fruit ripens, it bursts open, releasing the fibres. Yarn is made from fibre. b) Animals fibres are silk and wool. D) Jute is the outer covering of coconut. Ans. Jute fibre is obtained from the stem of the jute plant. Fiber to Fabric 1. Wool and silk fibres are obtained from animals. The following points highlight the three important fibre yielding plants of India. Question 4 From which parts of the plant cotton and jute are obtained? Items made from coir (coconut fibre) are: (i) Coir Mattresses (ii) Mats (iii) Baskets Wool is obtained from the fleece of sheep or goat. Cotton and jute are examples of fibres obtained from plants. Answer: a) Yarn is made from fibres. Silk fiber is obtained from the stem of a plant. It grows easily to a height of 4 m without agrochemicals and captures large quantities of carbon. (g) Polyester is a natural fibre. 2. B) Grape leaves done clear. C) Mulberry leaves done clear. The process of removing seed from cotton is called ginning. Ramie, fiber plants grow along Chang Jiang river, edible with anti bacteria function. (b) Animal fibres are_____ and_____ . 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 (ii) Fruit of cotton plant is about the size of lemon. The best fiber of banana extract is from the bark of banana tree that is easily procured. f) Silk fibre is obtained from the stem of the plant. c) Jute is the outer covering of coconut. 3. 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. In woven silk, the fibre's triangular structure acts as a prism that refracts light, giving silk cloth its highly prized "natural shimmer". f) Silk fibre is obtained from the stem of a plant g) Polyester is a natural fibre. Name two items that are made from coconut fibre. (f) Silk fibre is obtained from the stem of a plant. Silk fibres are obtained from the silkworms which spin the fibres to form a cocoon in the pupa stage. Hemp is the bast fibre obtained from stems of Cannabis sativa L plants. A) Eucalyptus leaves done clear. The fibers are first extracted by retting. Jute" is the name of the plant or fiber used to make burlap, hessian or gunny cloth. It is cultivated during the rainy season. (False) c) Jute is the outer covering of coconut. DIRECTIONS: Read the following three statements carefully and choose the correct option. Explanation: a)& b) Process of making yarn from fibres is called spinning. It is a synthetic fibre- artificially made g) Polyester is a natural fibre. 3. Except for silk, all natural cellulose- and protein-based fibers are obtained in short lengths and are called staple fibers. The test identifies the natural fibres more easily as compared to manmade ones. Cotton is a soft fibre that is obtained from cotton plants and grows as a boll. (i) The process of making yam from fibre is called weaving. In India, jute is mainly grown in West Bengal, Bihar and Assam. e) Weaving of yarn makes a piece of fabric. With 70% of cellulose, hemp is an excellent heat conductor, it absorbs dyes adequately, it blocks UV rays, it is very resistant to … Hemp: Hemp fibres are obtained from the stem of the hemp plant. The stems of the harvested plants are immersed in water for a few days. Fill in the blanks : a) Plant fibres are obtained from ___ and ___ b) Animal fibres are ___ and ___ Answers: a) Jute and cotton b) Silk … b) Spinning is a process of making fibres. Silk cotton fibre: Silk cotton is a silky, fluffy fibre obtained from the fruit of the silk-cotton tree, also called kapok. A) done clear. Among microscopic tests and chemical tests, microscopic tests are mainly used for natural fibre. Hemp fibre is obtained from the stems of hemp plant. (g) Polyester is a natural fibre. Jute is one of the most affordable natural fibers, The jute fiber comes from the stem and ribbon (outer skin) of the jute plant. Fiber crops. Flax is also a plant that gives natural fibres. Bast fibers. Silk cotton is used commonly used as stuffing in pillows, sleeping bags and life jackets. Jute fibre is obtained from the stem of the jute plant. f) False, silk fibre is not obtained from the stem of a plant. Q.3. Fibers: All cloth materials are made up of long, narrow, thin structures called fibers.Fibers are obtained from natural as well as manmade sources. Fibers obtained from banana leaves had about 26 % cellulose, 17 % hemicellulose, and 25 % lignin, but the fiber properties are not reported [07Bil]. Typically, banana plants produce about 30 leaves as long as 2 m and 30–60 cm wide [07Bil]. Answer: (i) Jute Sack bags (ii) Ropes Q8: Name two items that are made from coconut fibre. (False) d) The process of removing seed from cotton is called ginning. The most important components of fibres are cellulose (77%), pectin (1.4%) and waxes (1.4%). (iii) Silk fibre is obtained from adult of silk moth. Silk is a continuous filament fiber. 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 moth feeds on which plant leaves? are obtained from natural sources plants or materials. (a) True (b) False (c) False (d) True (e) True (f) False (g) False. it is the longest and thinnest natural The fibres are obtained from the leaves and are bast fibres. This fibre is obtained from the silk cotton tree, also called kapok. Polyester is a natural fiber. These fibres are light and fluffy. f) Silk fibre is obtained from the stem of a plant. Natural sources: Cotton, jute, silk, wool etc. The stems rot and fibres are separated by hand. (Stem-skin fibers) Esparto, a fiber from a grass; Jute, widely used, it is the cheapest fiber after cotton The stems rot and fibres are g) False, polyester is not a natural fibre. Answers: a) – True, b) – False, c) – False, d) – True e) – True, f) – False, g) – False. B) done clear. 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. In addition to the stems, fibers have also been obtained from the leaves of the banana plant. Silk fibre is drawn from the cocoon of silkworm. SOLUTION: Ropes and doormats are made from coconut fibre. Though flax has lost some of its value as a commercial fiber crop, flaxseed has grown in popularity as a health food. It has good absorbency, low conductivity and dyes easily. Jute fibre is obtained from the stem of the jute plant. Many plant fibres are produced as field crops. Silk fibre is obtained at which of the following stage of its life cycle?
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