It is a coarse fiber. Write few items that are made from coconut fibre. • It is the cheapest vegetable fibre procured from the bast or skin of the plant's stem and the second most important vegetable fibre after cotton, in terms of usage, global consumption, production, and availability. Anatomy of Jute Root (C ... Economic Importance: Jute fiber is obtained from the secondary phloem of the plant. Bast fibre (also called phloem fibre or skin fibre) is plant fibre collected from the phloem (the "inner bark", sometimes called "skin") or bast surrounding the stem of certain dicotyledonous plants.
(ii) Cotton fibres are obtained from which part of cotton plant ? Name two items that are made from coconut fibre. Apart from these, jute productivity is also affected by root-knot caused by a nematode (Meloidogyne arenaria) and by leaf yellow mosaic virus (Ghosh 1983). Jute fibres are obtained from the stem of jute plant. . 4. synthetic clothes soak more water than cotton true and false.5. Ans. Jute. Jute is a kind of fiber that is termed as a golden fiber. Jute is a long, soft, shiny bast fiber that can be spun into coarse, strong threads. Ans. Jute fibre is a totally natural biodegradable and compostable fibre obtained from the jute plant (Corchorus olitorius and Corchorus capsularis) and it is therefore an extremely attractive renewable resource for those who are at the forefront of the environmental movement and those who give top priority to environmental and ecological concerns. The six physical parameters viz., strength, fineness, colour, root content, defects and density of jute fibres are assessed for sorting out the fibre into eight differ - ent grades. Answer: Coir is the natural fibre obtained from coconut husk. The jute fibres are mainly concentrated near the woody, central parts of the stalk. These plants are native to the Indian subcontinent and are grown throughout the year. Jute is a rough, weaving fibre chiefly used for aking gunny bags, carpets and curtains. On the other hand, salinity and flood are the major abiotic factors affecting the production of quality jute fiber. Jute fibers are obtained from two species of Corchorus, namely C capsularis and C. olitorius. Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. Explanation: The jute fiber comes from the stem and ribbon (outer skin) of the jute plant. The leaves of C.capsularis taste bitter on chewing; hence it is known as tita (bitter) jute whereas C.olitorius is mitha (sweet) jute. Ropes, basket, door mat, Mattress etc. Flax is one of the oldest textile fibers. A fabric is made up of two sets of yarns arranged together. Jute fibre is obtained from bark of the two cultivated species of the genus Chrchorus namely C.capsularis and C.olitorius of the family Tiliaceae. Mention the states name where jute plant harvested. Give two example of unstitched garments ___ and ___ Answers: 1. In India, the plant is cultivated in the states of West Bengal, Bihar, Uttar Pradesh, Assam, Meghalaya, Orissa, and Tripura. Jute, Hindi pat, also called allyott, either of two species of Corchorus plants-C. capsularis, or white jute and C. olitorius, including both tossa and daisee varieties-belonging to the hibiscus, or mallow family (Malvaceae) and their fibre. The latter is a bast fibre; i.e., it is obtained from the inner bast tissue of the bark of the plant’s stem. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. Jute" is the name of the plant or fiber used to make burlap, hessian or gunny cloth. A) Both A and R are true and R is the correct explanation of A. done clear. This is a 100% natural and biodegradable fiber, keeping the environment green & clean. Jute was once known as the golden fibre of Bangladesh, since it was the most important cash crop for the country. Fig.
(iii) From which part of coconut fruit coir (fibre) is obtained? Relative weightage is given to each physical parameter by standard scoring system and the grade of fibre is determined by total score of the six parameters. The fibres are separated from the secondary phloem of the plant by retting which is done in still water. 1. cotton fibres are obtained from the stem of cotton plant. (B) Hair of sheep. Silk and wool 2. Answer the following questions: Question 1. Jute fibre is. It is a natural, cellulosic, multi-cellular bast fiber. Jute fibre is obtained from the stem of the jute plant. Q5. Reason (R): Jute fibre is a natural fibre. Q6. Jute fiber has the tendency to transform itself into awe inspiring artifacts and handicrafts. Q8. ___ is an example of dietry fibre. Then, the stem of such harvest plant are immersed in water for a few days so that they rot. The plant has not branched. They are composed of cellulose and lignin. Existing Grading system. It is obtained from Corchorus capsularis or C. olitorius (family-Tiliaceae). Flax is stronger than cotton as its polymers lie almost parallel to the fiber axis. Question 6. 4. Answer: Jute bags, ropes and Foot mats. true and false. Question 5: Name two items that are made from coconut fibre. Jute has a reliability and is highly eco-friendly as compared to plastic items. Jute fibre is obtained from stem of jute plant. Ans. In India, jute is grown in West Bengal, Bihar and Assam. Answer: (i) Jute Sack bags (ii) Ropes Q8: Name two items that are made from coconut fibre. (D) Patsun 5.Synthetic fibres are (A) Rayon (B) Nylon and Polyster (C) Rayon, Nylon, and Polyester. Answer: The jute plant is normally harvested at flowering stage. The Jute Fiber Extraction: The jute plant’s fibers lie beneath the bark and surrounded the woody central part of the stem. Jute 3. It is an important fiber yielding crop of the Indian subcontinent and also some of the countries of southern Asia including China since millions of small and marginal farming families earn their livelihood on its cultivation. Jute is obtained from the plants Corchorus olitorius and Corchorus capsularis. Flax fiber is 10–100 cm in length. JUTE A NATURAL FIBER • Jute is a natural fibre with golden and silky shine and hence called The Golden Fibre. There are also a number of jute substitutes such as Bimli (from Hibiscus cannabinus) and China jute (from Abutilon theophrasti). III. Name two items that are made from coconut fibre. The infusion of leaves is used as a popular domestic medicine for disorder of the liver and is of great value in alleviating the symptoms of burning hands and feet. Cellulose 4. Answer: (i) Baskets (ii) Doormats . The fibers are first extracted by retting. Patsun 5. Jute fabrics formed the ‘sackcloth’ of Biblical times and are now used for wrappings, bindings, etc. Jute dicotyledenous fibre-yielding plant of the genus Corchorus, order Tiliaceae. It supports the conductive cells of the phloem and provides strength to the stem. B) cultivated during summer season done clear. What is yarn? Jute fibre is obtained from two cultivated species viz. Answer: Fibre is a thread like a strand from which yam is made. Cotton fibre is obtained from fruits of cotton plant (cotton bolls). Introduction Jute is a common term used for both the plant and its fiber. Q7. Jute fiber is a long, soft, shiny, cheap and non-toxic fiber that can be woven into strong coarse yarn. Q 5. Jute fibre is obtained from stem of the jute plants. Answer: Spinning is the process of making yarn from fibres. SOLUTION: Ropes and doormats are made from coconut fibre. There are two types of retting: stem and ribbon. Shawl and Dhoti. Question 2. true and false.6 all clothes are made from weaving yarns. In flooded land, plants are up rooted. Cotton wool . Key words : Jute fibre, Jute stick, Jute Caddies, Root cuttings, Particle board, Composite. The fibres are then separated from the stem in long strands and washed in clear, running water. Its diameter varies from 40 to 80 μm. For example, polyester, nylon, and acrylic etc. What is oil lamps wick made of? Q6. Check the below NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. Its leaves grow on its stem which is covered with thick bark. Jute is obtained from the stem of jute plant. Number of yams used to make fabric by weaving and knitting are (a) two sets of yams in each case (b) single yam in each case (c) two sets of yams in weaving and single in knitting (d) single yam in weaving and two sets in knitting . Q 6. Figure 2.1 shows the type of fibre length diagram obtained from jute; this pattern, combined with the relatively large diameter of the fibres, confines the use of jute to the heavier counts of yarn in comparison with wool, cotton, or flax, for if fine yarns are to be spun then fine fibres are a necessity. Jute. The retting process consists of bundling jute stems together and immersing them in slow running water. It is obtained from the bark of jute plants. When the jute plant is at its flowering stage, it is harvested. Q7: Name two items that are made from Jute fibre. Flax fiber is obtained from the inner bark of the stem of a plant grown in temperate and subtropical regions of the world. 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. It is a kind of long, soft, and lustrous fiber. 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