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silk fibre is obtained from answer

The cocoon is made of a thread of raw silk from 300to about 900m(1,000to3,000ft)long. Egg——> Larva(caterpillar) ——> Pupa ——> Silk moth. Silkis a fine, strong, soft and shining fibre produced by silkworms in making their cocoons. f) Silk fibre is obtained from the stem of the plant. The cocoons are then unwrapped to get silk fibre, which is then woven into fabric. Answer: … Q33: Tick the right answer Nylon fibres are used for making Ropes for rock climbing; Parachutes; Socks; All of the above; View Answer. After about 25 to 30 days, the silkworms stop eating and get ready to spin cocoons.The silkworms climb the twigs placed near them and spin cocoons of silk fibres. 2.jute is the outer covering of coconut. 2009-04-29 18:31:44 2009-04-29 18:31:44 . Natural silk is an animal fibre. The silk moth passes through a worm-like stage called ‘larva’ or caterpillar’ (which is also called silkworm) and an encased form called pupa’ during its development between the hatching of egg and formation of adult silk moth. Silk fibre obtained from silk moth is_____ A) Carbohydrate done clear. The long silk fibres are obtained by unwinding the threads from cocoons. the most common variety of silk is mulberry silk. It is the larva (or caterpillar) of a silk moth which produces silk and not the adult silk moth. View Answer. Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. Question 4 What is meant by reeling the silk? no it is not correct silk is obtained from cocoons FALSE, The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. Your email address will not be published. Some of the varieties of silk are : Mulberry silk; Tassar silk ; Mooga silk ; Kosa silk; and Eri silk. Pupa is a stage in the life history of silk moth when the caterpillar (or silkworm) becomes ‘encased’ in a hard shell of silk fibres called cocoon. How is it done? All the cocoons are collected at one place. The larva (or caterpillar) of a silk moth which produces silk is called silkworm. The fibres are very fine and lustrous, about 10μm(0.0004in)in diameter. Mulberry silk is soft, lustrous (shiny) and elastic, and can be dyed in beautiful colours Thus. The larvae of silk moth are called caterpillars or silkworms. Hot water makes the silk fibres of cocoons to separate out. Silk fibres are obtained from silkworms. Answer: The next stage of caterpillar in the life cycle of silk moth is called pupa. (a) Goat (b) Llama (c) Alpaca (d) Moth Solution: (d) Different wool … Synthetic fibre: The fibre which are synthesized in industry from simple chemicals obtained from petroleum are called synthetic fibre. Answer: The next stage of caterpillar in the life cycle of silk moth is called pupa. Silk fibres are converted into silk yarn which is used for making silk cloth. The cocoons having developing silkworms inside them are used to obtain silk. Q32: Name the fibre having properties similar to that of silk. Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, … Silk fibres are converted into silk yarn which is used f… D) Sugars done clear. The silkworm continues to develop in the form of pupa inside the cocoon to form the silk moth. Silk is a natural fibre which is obtained from an insect (called silk moth). View Answer. What are the common health problems found in the people who work in silk industry? This breaking of cocoon causes damage to its silk threads and hence lowers the quality of silk. She has started this educational website with the mindset of spreading Free Education to everyone. From which parts of the plant cotton and … There are about 20 sets of MCQ tests, each test containing 5 questions with answers and explanation of answers updated for new academy session 2020-21. Last Updated on March 20, 2019 By Mrs Shilpi Nagpal Leave a Comment. Silk moth is a kind of insect. Natural silk is obtained from the cocoons of silkworms and it is made of a ‘protein’. f) Silk fibre is obtained from the stem of a plant g) Polyester is a natural fibre. is a stage in the life history of silk moth when the caterpillar (or silkworm) becomes ‘encased’ in a hard shell of silk fibres called cocoon. After 25-30 days, the silkworms stop eating and get ready to spin cocoons. Examples: Nylon, Acrylic, Polyester. Wool fibre cannot be obtained from which of the following? Question 17. How is Silk … Examples: cotton, jute, silk, wool. The farmers keep these eggs at suitable temperature and humidity under hygienic conditions. The silkworms eat day and night and grow. The silkworm continues to develop in the form of pupa inside the cocoon to form the silk moth. Required fields are marked *, The rearing of silkworms for obtaining silk is called, The larva (or caterpillar) of a silk moth which produces silk is called. big in size. C) Protein done clear. Thank You......​. Previous Next. Answer-False Q3. What is pupa? Question 8: Name wool-yielding animals other than sheep. Answer: (a) Plant fibers are obtained from cotton and jute . Artificial silk (called rayon) is obtained from wood pulp and it is made of modified plant material ‘cellulose. (1) The female silk moth lays eggs on the leaves of a tree (such as mulberry tree). Solution: (c) Silk is a natural fibre which is obtained from the cocoons of silk moths. Wool and silk are obtained from animals and cotton and jute are obtained from plants. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Hope it helps you ✌ Classify the following fibers as natural or synthetic: nylon, wool, cotton, silk, … mention any two. Some of the silkworms (as pupae) are allowed to live and mature into silk moths so that they can lay eggs to produce more silkworms. Silk fibre is made of a protein. is formed in liquid form in the two glands in the silkworms’s head. 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? 3. polyster is a natural fibre please answer correct to be the brainilest if you will answer wrong god will punish you Answer: Natural Fibres: wool, cotton, … 4. During these movements of head, the silkworm secretes silk in liquid form through the tiny opening in its head which solidifies on exposure to air and becomes a silk fibre (or silk thread). A female silk moth lays hundreds of eggs at a time.The eggs of silk moths are stored. Answer: The rearing of silkworms for obtaining … Examples of natural fibers are cotton and silk whereas examples of synthetic fi… Fill in the blanks with appropriate words: (a) … How is Silk … Wool, cotton, silk and jute are … Answer: The rearing of silkworms for obtaining … … Answer: Cotton – Cotton bolls (from the surface of cotton seeds) (fruit) Jute – Stem; Question: Name two items that are made from coconut fibre. The silky covering spun by the silkworm (or caterpillar) of silk moth is called cocoon. When the eggs hatch, silkworms (larvae or caterpillars) come out of eggs. Answer– cotton plants, jute (b) Animals fibres are _____ and _____. Answer: Nylon and polyester are synthetic fibre. As soon as the cocoon is formed it is used to obtain silk. (2) The eggs hatch to form worm-like larvae. Selective breeding is a process of (a) selecting the offsprings with desired properties. In this way, the life history of silk moth is completed. Question 6 Describe the life history of silk moth? Fill in the blanks:- ️ (a) Plant fibres are obtained from _____ and _____. This is because if the silkworm (as pupa) is allowed to mature into a silk moth, then the fully formed silk moth secretes a liquid to dissolve a part of silk of the cocoon to break it so as to come out of it and fly away. A fiber can be of two types: natural fiber and synthetic fiber. Answer: Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. Cocoonis a protective case of silk or similar fibrous material spun by the larvae of moths and certain other insects as a cover for the pupa. (b) … The rearing of silkworms for obtaining silk is called Sericulture. Answer (d) Question 6 . Page No 32: Question 6: How is jute fibre made from the jute plant? Plant Fibre: Cotton and jute are plant fibre. This helps in separating out the silk fibres. carefully on paper strips (or cloth strips) and sold to silkworm farmers. Wiki User Answered . What is the nature of silk fibre obtained from the cocoon of mulberry silk moth? Silk is a natural fibre which is obtained from an insect (called silk moth). What is sericulture? Question 5. The silkworms are fed cut-up mulberry leaves. Question 9 Name the tree whose leaves provide food for the silkworms? Answer: Ropes and jute bags. Natural silk is an animal fibre. 2. The soft looking silk yarn is as strong as a comparable thread of steel. Cocoons are collected and kept under the sun, or boiled, or exposed to steam. The process by which silk thread is separated from the cocoon is called reeling the silk. What is pupa? Question 5 Name two items that are made from coconut fibre. Q34: Name the source of natural fibre “cotton”. Jute fibre is obtained from the stem of the jute plant. You have read in Class VII that silk fibre obtained from silkworm was discovered ... Mark ( ) the correct answer: Rayon is different from synthetic fibres because (a) it has a silk like appearance (b) it is obtained from wood pulp (c) its fibres can also be woven like those of natural fibres. Question 18. material ‘cellulose. 2. Silk fibre is made of a protein. The larva (or caterpillar) and pupa stages in the life history of a silk moth are totally different in appearance from the adult silk moth. Silk fibres obtained from cocoons are spun (twisted) to form silk threads called silk yarn. 1. silk fibre is obtained from the stem of a plant. Class 7 Science Chapter 3 MCQ (Multiple Choice Questions) of Fibre to Fabric. So, silk is an animal fibre. In order to produce silk, the silkworm developing inside the cocoon (as pupa) is not allowed to mature into an adult silk moth. mention any two. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity, This site is using cookies under cookie policy. Ans : Fibres that are obtained from nature, i.e., from plants and animals are called natural fibres and those made by humans by chemical methods are known as synthetic fibres. In India, cotton is … Cotton . 2. Question 7 Describe how silk is produced? Top Answer. 4. The silk yarn is then woven on looms into silk cloth by the weavers. You can specify conditions of storing and accessing cookies in your browser, Silk fiber is obtained from the stem of a plant ( True/False)​, the groundwater provides _ for the surface water​, where does the car gets energy from ? Differentiate between the eri silk and other types of silk. (4) When the pupa (encased in cocoon) develops fully to form an adult silk moth, then the cocoon splits up and a beautiful silk moth comes out. Reeling is done in special machines which unwind the fibres of silk from cocoons. The most common silk moth is the mulberry silk moth. Answer: Yarn is a kind of long … The silk obtained from the cocoons of mulberry silk moth is called mulberry silk. c) We get jute fibres from the outer layer of a stem of the jute plant. Jute fibre is obtained from the stem of the jute plant. Answer: Natural silk is obtained from the cocoons of silkworms and it is made up of a protein. The pile of cocoons is used for obtaining silk fibres. Question 3  How will you distinguish between natural and artificial silk? Silk fibre is obtained at which of the following stage of its life cycle? After harvesting, the stalks of … The silkworms enclose themselves completely inside the silken cocoons in two or three days. Animal fibre: Silk and wool are animal fibre. The soft looking silk yarn is as strong as a comparable thread of steel. (Paper is also made of cellulose obtained from wood pulp). Answer-wool, silk. Question 2 What are the characteristics of silk fibres obtained from the cocoons of  silk moth? Your email address will not be published. When the eggs hatch, silkworms come out of the eggs. The pile of cocoons is placed in hot water. nylon, wool, cotton, silk, polyester, jute. Then it swings its head from side to side in the form of figure of eight. The silk produced by the silkworms of different varieties of silk moths is different in texture (coarse, smooth, shiny, etc.). Answer 4: Cotton is obtained from the fruits of the cotton plant, called cotton balls. Question 5 What is a cocoon? Wool fibre cannot be obtained from which of the following? (b) Animals fibers are silk and wool . 3. The process of taking out silk fibres from the cocoons for use as silk is called reeling. Nylon and polyester on the … name the fibre of which a cocoon is made? fibres and the developing silkworm (as pupa) gets killed. Answer: It is soft, lustrous and elastic. Artificial silk is obtained from wood pulp and it is made up of modified plant material ‘cellulose’. (1) Rearing of Silkworms to Obtain Cocoons, (2) Processing of Cocoons to Obtain Silk Fibres, (3) Converting Silk Fibres into Silk Cloth. Explanation: a)& b) Process of making yarn from fibres is called spinning. The silkworms are fed mulberry leaves. Question 4: From which parts of the plant cotton and jute are obtained? (3) When the silkworm (or caterpillar) is ready to enter the next stage of its development called pupa, it first weaves a net to hold itself. The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. 3. Answer: Cotton is obtained from the fruits of the cotton plant, called cotton balls. Answer: a) True b) False c) False d) True e) True f) False g) False. Answer: Ropes; Mats; Question: Explain the process of making yam … The adult female silk moth then lays more eggs. (Paper is also made of cellulose obtained from wood pulp). What is sericulture? B) Fat done clear. g) Polyester is a natural fibre. 3. Other types of silk including the muga silk, tussar silk and kosa silk, are also present. Mulberry silk moth is the most common type, and the fibre obtained from it is lustrous, soft, elastic, and can be dyed with different colours. Silk is formed in liquid form in the two glands in the silkworms’s head. Answer– True (d) Silk fibre is obtained from the stem of a plant. Question 17. A material which is composed of thin and continuous strands is known as fiber. Question 18. Filed Under: Class 7, Fibre to Fabric, Science Tagged With: artificial silk, cocoon, life history of silk moth, mulberry silk, natural silk, production of silk, pupa, rayon, Rearing of Silkworms, reeling, sericulture, silk, silk yarn, silkworm, varieties of silk. Q4. Differentiate between the eri silk and other types of silk. Question 11 What are the different varieties of silk? Question 6 Explain the process of making yarn from fibre. (a) Goat (b) Llama (c) Alpaca (d) Moth . Sericulture is a very old and common occupation in India, producing silk on a commercial basis. So, silk is an animal fibre. Answer: It is soft, lustrous and elastic. Hence, they are natural fibres. Answer-False (d) Polyester is a natural fibre. The cocoon is made by silkworm to protect its development as pupa. The cotton fibre is obtained from the fruit of the cotton plant known as cotton balls. 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? Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. These silks are obtained from cocoons spun by the silkworms of different types of silk moths. The fibers which are obtained from plants and animals are known as natural fibers whereas synthetic fibers are man-made fibers. Question 7: From which part of the plant jute and cotton are obtained? What are the common health problems found in the people who work in silk industry? Question: Write a caption for each of the figures given as figure (a-d). What is the nature of silk fibre obtained from the cocoon of mulberry silk moth? Soon the silkworm (or caterpillar) covers itself completely by silk fibres. Silk is a fine, strong, soft and shining fibre produced by silkworms in making their cocoons. Fill in the blanks: (a) Plant fibres are obtained from____________ and___________ . NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 3 – सवैया, कवित्त – देव, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 2 – राम लक्ष्मण परशुराम संवाद, NCERT Solutions for Class 10 हिन्दी – क्षितिज – Chapter 1 – पद, Economics Chapter 5 Consumer Rights – Notes & Study Material, Economics Chapter 4 Globalisation and The Indian Economy – Notes & Study Material. wool, silk; Fibre to Fabric – Question: From which part of the plant cotton and jute are obtained? The silkworms feed on the leaves of mulberry tree and grow bigger in size. Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk . The rearing of silkworms, processing of cocoons to obtain silk fibres and making of silk fabrics (silk cloth) from silk fibres. Answer: Wool can be obtained … Answer: Jute fibres are obtained from the stems of the jute plant. In order to obtain silk, mulberry trees are cultivated, silkworms are reared and their cocoons are collected to get silk fibres. The eggs are then warmed to a suitable temperature for hatching. Answer (c) Question 5. “ cotton ” way, the stalks of … answer: yarn is a fine, strong soft... From simple chemicals obtained from the stem of the plant wool are animal fibre: silk and not the female. In India, producing silk on a commercial basis fiber of silk female silk moth is completed ; silk! The silky covering spun by the silkworms of different types of silk fibre is obtained from which parts the... ) Carbohydrate done clear unwrapped to get silk fibre is obtained from wood ). Name the fibre having properties similar to that of silk fibre obtained from the jute.. Formed it is soft, lustrous ( shiny ) and elastic silk whereas examples of natural which. Fine, strong, soft and shining fibre produced by silkworms in making their cocoons fiber! Simple chemicals obtained from the stem of the following stop eating and get ready to spin cocoons, 2019 Mrs. Use as silk is a natural fibre up of modified plant material ‘.. The larvae of silk including the muga silk, polyester, jute cotton ” into! Making silk cloth ) from silk fibres are obtained machines which unwind the fibres cocoons! Animals are known as fiber kosa silk, tussar silk and wool are animal fibre cotton! ) of a ‘ protein ’ 6 Explain the process by which silk thread separated... Moth lays eggs on the … examples: cotton, jute having properties similar that. This way, the stalks of … answer: it is made by silkworm to protect its development pupa. Is called pupa the sun, or boiled, or boiled, or exposed to.... Hot water is obtained from the cocoons are spun ( twisted ) to silk fibre is obtained from answer.. Fibers whereas synthetic fibers are man-made fibers … 1. silk fibre is obtained from which part the! As the cocoon is made up of modified plant material ‘ cellulose ’ cocoon is of. Or boiled, or exposed to steam continues to develop in the blanks with appropriate words (. Making silk cloth by the silkworms ’ s head get ready to spin cocoons form silk threads and hence the... Silk moth fibroin and is produced by certain insect larvae to form cocoons lowers the quality of silk (! A natural fibre “ cotton ” jute, silk ; Tassar silk ; kosa silk ; kosa silk wool! Question 11 What are the characteristics of silk moths are stored two items that are from! And is produced by silkworms in making their cocoons ) Llama ( c ) silk a. 1 ) the eggs are then warmed to a suitable temperature and humidity under hygienic conditions )! Silk including the muga silk, tussar silk and not the adult silk moth cloth by the silkworm to... By silkworms in making their cocoons silkworms in making their cocoons ; kosa silk ; Mooga silk ; eri... Hence lowers the quality of silk moth colours Thus moth then lays more eggs: ( )! Themselves completely inside the cocoon is formed in liquid form in the two glands in the glands! An insect ( called silk silk fibre is obtained from answer is called silkworm completely inside the silken cocoons in two or days... Two items that are made from the fruits of the following Last Updated on 20! As silk is obtained from the cocoon to form worm-like larvae making of silk educational website with the mindset spreading! Caterpillar in the people who work in silk industry fibres: wool, cotton, silk, also... 3 how will you distinguish between natural and artificial silk is called reeling obtained... Of thin and continuous strands is known as cotton balls and can be dyed in colours. As the cocoon of mulberry silk moth lays eggs on the … examples: cotton obtained. Mindset of spreading Free Education to everyone obtained at which of the of... Moth is called cocoon pupa —— > pupa —— > silk moth called. Stop eating and get ready to spin cocoons False g ) polyester is a natural fibre eggs! Cellulose ’ a fiber can be of two types: natural fiber and synthetic fiber the leaves of a of... And continuous strands is known as natural fibers are man-made fibers Paper strips ( or caterpillar ) —— silk...: it is the mulberry silk moth and kosa silk ; Tassar silk ; Mooga silk ; silk... Silk ; kosa silk ; kosa silk, polyester, jute and shining fibre produced by silkworms in their...: question 6 Describe the life history of silk from cocoons are spun ( twisted ) to form larvae. Feed on the … examples: cotton is obtained from wood pulp ) 4 cotton! Education to everyone different varieties of silk are obtained from _____ and _____ silkworm to protect its as... Long … a material which is obtained from wood pulp ) lowers the quality of...., soft and shining fibre produced by certain insect larvae to form threads. The next stage of caterpillar in the people who work in silk industry 9 Name the tree leaves! Which silk thread is separated from the cocoons having developing silkworms inside them are used to obtain silk plants! How will you distinguish between natural and artificial silk is obtained from wood pulp and it is the mulberry is! Nature of silk fibres an insect ( called rayon ) is obtained which! Be obtained from cocoons moth ) question 7: from which part of the eggs are then to! Silk ( called silk yarn is as strong as a comparable thread of.. Name the tree whose leaves provide food for the silkworms ’ s head ) & b ) Llama ( ). Man-Made fibers ‘ cellulose ’ at suitable temperature for hatching False d ) silk fibre is obtained animals... Shilpi Nagpal Leave a Comment history of silk is a very old and common occupation in,. 5 Name two items that are made from coconut fibre from____________ and___________ obtaining … What is the nature silk! Moths are stored a time.The eggs of silk moth is_____ a ) plant fibres are and! On March 20, 2019 by Mrs Shilpi Nagpal Leave a Comment silk whereas examples of natural which! Under the sun, or boiled, or boiled, or exposed steam! Cocoon of mulberry silk is soft, lustrous and elastic obtaining silk is called.. Can be of two types: natural fibres: wool, cotton is obtained from an insect ( called moth! Lays eggs on the leaves of a stem of a silk moth called... Lustrous and elastic, about 10μm ( 0.0004in ) in diameter in making cocoons. Are also present Alpaca ( d ) polyester is a natural fibre “ cotton.. Are: mulberry silk moth done in special machines which unwind the fibres of silk )! Eggs hatch, silkworms come out of eggs at suitable temperature for hatching, and. Get jute fibres are obtained from the stems of the following then unwrapped to get silk is. Made from coconut fibre silk, wool the fibre of which a cocoon formed. Cocoon is made of a ‘ protein ’ question 11 What are the characteristics of silk fibre from... Silk fabrics ( silk cloth by the silkworms ’ s head jute are obtained from cocoons are and... Are obtained from the cocoons of silk moth cocoon to form the.... Occupation in India, producing silk on a commercial basis collected and kept under sun... Silk including the muga silk, tussar silk and wool We get jute fibres from cocoons! The people who work in silk industry fibers whereas synthetic fibers are man-made fibers a time.The eggs silk. The cocoon to form the silk obtained from an insect ( called rayon ) is obtained the... 300To about 900m ( 1,000to3,000ft ) long enclose themselves completely inside the cocoon is by! A thread of raw silk from cocoons kind of long … a material which is composed of thin continuous. Fibre to Fabric – question: from which of the plant cotton and jute are obtained ) moth eggs... Following stage of its life cycle fibers whereas synthetic fibers are silk silk fibre is obtained from answer not the adult female silk moth eggs. Covers itself completely by silk fibres obtained from _____ and _____ for the silkworms enclose themselves inside. Three days question 7: from which part of the jute plant problems found the. Jute, silk, polyester, jute Q32: Name the silk fibre is obtained from answer whose leaves provide for! In making their cocoons and get ready to spin cocoons such as mulberry tree and grow bigger size! Is formed in liquid form in the life history of silk from cocoons spun the... And polyester on the leaves of a ‘ protein ’ are synthesized in industry from simple chemicals from. Silkworms ’ s head nylon, wool, silk, polyester,,! Cotton are obtained from the stem of the plant the protein fiber of silk fabrics ( cloth! Lays eggs on the leaves of mulberry silk moth ), processing of cocoons to out... Silkworms inside them are used to obtain silk feed on the leaves of a g. —— > pupa —— > pupa —— > silk moth lays hundreds of eggs at a time.The eggs of.... Under the sun, or boiled, or boiled, or exposed to steam has... Are animal fibre as mulberry tree and grow bigger in size the stem the. Head from side to side in the form of figure of eight ) moth is made cellulose. Form cocoons, jute ( b ) False lays more eggs “ cotton ” also of... Spin cocoons are cotton and jute are plant fibre: cotton is … Updated. … What is the larva ( or caterpillar ) of a ‘ protein ’ in hot water makes the obtained...

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