The silkworm continues to develop in the form of pupa inside the cocoon to form the silk moth. 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 ✌ 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. Answer: Wool can be obtained … 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. Examples: cotton, jute, silk, wool. Silk is formed in liquid form in the two glands in the silkworms’s head. 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. The pile of cocoons is placed in hot water. Silk fibres obtained from cocoons are spun (twisted) to form silk threads called silk yarn. Answer-wool, silk. Solution: (c) Silk is a natural fibre which is obtained from the cocoons of silk moths. Differentiate between the eri silk and other types of silk. What are the common health problems found in the people who work in silk industry? Thank You......​. Question 18. Answer: The rearing of silkworms for obtaining … mention any two. Question 18. Answer-False (d) Polyester is a natural fibre. Silk fibres are converted into silk yarn which is used for making silk cloth. Question: Write a caption for each of the figures given as figure (a-d). Question 7: From which part of the plant jute and cotton are obtained? Q4. (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. The fibres are very fine and lustrous, about 10μm(0.0004in)in diameter. 4. 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 is a natural fibre which is obtained from an insect (called silk moth). 2. Answer: (a) Plant fibers are obtained from cotton and jute . Question 11 What are the different varieties of silk? Answer-False Q3. Answer: Nylon and polyester are synthetic fibre. A fiber can be of two types: natural fiber and synthetic fiber. wool, silk; Fibre to Fabric – Question: From which part of the plant cotton and jute are obtained? Silk fibre obtained from silk moth is_____ A) Carbohydrate done clear. Question 7 Describe how silk is produced? c) We get jute fibres from the outer layer of a stem of the jute plant. 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. Answer: Natural silk is obtained from the cocoons of silkworms and it is made up of a protein. Answer (d) Question 6 . 2. Question 4 What is meant by reeling the silk? Answer– cotton plants, jute (b) Animals fibres are _____ and _____. Question 8: Name wool-yielding animals other than sheep. When the eggs hatch, silkworms (larvae or caterpillars) come out of eggs. The larvae of silk moth are called caterpillars or silkworms. Sericulture is a very old and common occupation in India, producing silk on a commercial basis. 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. Selective breeding is a process of (a) selecting the offsprings with desired properties. Then it swings its head from side to side in the form of figure of eight. A material which is composed of thin and continuous strands is known as fiber. Q34: Name the source of natural fibre “cotton”. Answer (c) Question 5. View Answer. (1) Rearing of Silkworms to Obtain Cocoons, (2) Processing of Cocoons to Obtain Silk Fibres, (3) Converting Silk Fibres into Silk Cloth. Answer: The rearing of silkworms for obtaining … (1) The female silk moth lays eggs on the leaves of a tree (such as mulberry tree). The cocoons having developing silkworms inside them are used to obtain silk. Soon the silkworm (or caterpillar) covers itself completely by silk fibres. Question 5 Name two items that are made from coconut fibre. Some of the varieties of silk are : Mulberry silk; Tassar silk ; Mooga silk ; Kosa silk; and Eri silk. Natural silk is an animal fibre. Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk . Answer: It is soft, lustrous and elastic. The fibers which are obtained from plants and animals are known as natural fibers whereas synthetic fibers are man-made fibers. Classify the following fibers as natural or synthetic: nylon, wool, cotton, silk, … 3. Reeling is done in special machines which unwind the fibres of silk from cocoons. Silk fibre is obtained from (a) fleece of sheep (b) cotton ball (c) cocoon (d) shiny jute stalk. She has started this educational website with the mindset of spreading Free Education to everyone. Answer: Natural Fibres: wool, cotton, … The soft looking silk yarn is as strong as a comparable thread of steel. Answer: … Question 4: From which parts of the plant cotton and jute are obtained? 4. 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. Question 6 Describe the life history of silk moth? Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, … 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. Answer: Cotton – Cotton bolls (from the surface of cotton seeds) (fruit) Jute – Stem; Question: Name two items that are made from coconut fibre. Fill in the blanks: (a) Plant fibres are obtained from____________ and___________ . How is Silk … What is sericulture? The eggs are then warmed to a suitable temperature for hatching. Egg——> Larva(caterpillar) ——> Pupa ——> Silk moth. Wiki User Answered . Natural silk is an animal fibre. 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. 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). The silkworms are fed mulberry leaves. View Answer. Answer: The next stage of caterpillar in the life cycle of silk moth is called pupa. Wool and silk are obtained from animals and cotton and jute are obtained from plants. 2009-04-29 18:31:44 2009-04-29 18:31:44 . The rearing of silkworms, processing of cocoons to obtain silk fibres and making of silk fabrics (silk cloth) from silk fibres. Answer: Ropes; Mats; Question: Explain the process of making yam … This helps in separating out the silk fibres. How is Silk … Silk fibres are obtained from silkworms. (b) … All the cocoons are collected at one place. Hence, they are natural fibres. Silk is a fine, strong, soft and shining fibre produced by silkworms in making their cocoons. 3. Question 3  How will you distinguish between natural and artificial silk? Answer: The next stage of caterpillar in the life cycle of silk moth is called pupa. The farmers keep these eggs at suitable temperature and humidity under hygienic conditions. 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. The cocoon is made by silkworm to protect its development as pupa. (a) Goat (b) Llama (c) Alpaca (d) Moth Solution: (d) Different wool … Natural silk is obtained from the cocoons of silkworms and it is made of a ‘protein’. How is it done? 2.jute is the outer covering of coconut. Wool fibre cannot be obtained from which of the following? 1. silk fibre is obtained from the stem of a plant. In order to produce silk, the silkworm developing inside the cocoon (as pupa) is not allowed to mature into an adult silk moth. A female silk moth lays hundreds of eggs at a time.The eggs of silk moths are stored. What is pupa? (b) Animals fibers are silk and wool . The process by which silk thread is separated from the cocoon is called reeling the silk. Artificial silk is obtained from wood pulp and it is made up of modified plant material ‘cellulose’. Answer: Ropes and jute bags. The silk obtained from the cocoons of mulberry silk moth is called mulberry silk. Examples of natural fibers are cotton and silk whereas examples of synthetic fi… Fill in the blanks:- ️ (a) Plant fibres are obtained from _____ and _____. The silk yarn is then woven on looms into silk cloth by the weavers. Animal fibre: Silk and wool are animal fibre. (2) The eggs hatch to form worm-like larvae. is formed in liquid form in the two glands in the silkworms’s head. Examples: Nylon, Acrylic, Polyester. The soft looking silk yarn is as strong as a comparable thread of steel. Answer: a) True b) False c) False d) True e) True f) False g) False. These silks are obtained from cocoons spun by the silkworms of different types of silk moths. The silk produced by the silkworms of different varieties of silk moths is different in texture (coarse, smooth, shiny, etc.). Q32: Name the fibre having properties similar to that of silk. In this way, the life history of silk moth is completed. 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. Question 5 What is a cocoon? Silkis a fine, strong, soft and shining fibre produced by silkworms in making their cocoons. … carefully on paper strips (or cloth strips) and sold to silkworm farmers. Hot water makes the silk fibres of cocoons to separate out. 3. polyster is a natural fibre please answer correct to be the brainilest if you will answer wrong god will punish you 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 17. The adult female silk moth then lays more eggs. Question 2 What are the characteristics of silk fibres obtained from the cocoons of  silk moth? Answer 4: Cotton is obtained from the fruits of the cotton plant, called cotton balls. Class 7 Science Chapter 3 MCQ (Multiple Choice Questions) of Fibre to Fabric. 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. What is the nature of silk fibre obtained from the cocoon of mulberry silk moth? Fill in the blanks with appropriate words: (a) … Silk fibre is made of a protein. Explanation: a)& b) Process of making yarn from fibres is called spinning. (Paper is also made of cellulose obtained from wood pulp). 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. The silkworms are fed cut-up mulberry leaves. Top Answer. g) Polyester is a natural fibre. The process of taking out silk fibres from the cocoons for use as silk is called reeling. Answer: Yarn is a kind of long … The most common silk moth is the mulberry silk moth. The rearing of silkworms for obtaining silk is called Sericulture. 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 ? Wool, cotton, silk and jute are … Answer: It is soft, lustrous and elastic. Silk fibres are converted into silk yarn which is used f… The silky covering spun by the silkworm (or caterpillar) of silk moth is called cocoon. What is the nature of silk fibre obtained from the cocoon of mulberry silk moth? What is pupa? Silk moth is a kind of insect. Last Updated on March 20, 2019 By Mrs Shilpi Nagpal Leave a Comment. The silkworms feed on the leaves of mulberry tree and grow bigger in size. C) Protein done clear. The long silk fibres are obtained by unwinding the threads from cocoons. f) Silk fibre is obtained from the stem of the plant. Your email address will not be published. Synthetic fibre: The fibre which are synthesized in industry from simple chemicals obtained from petroleum are called synthetic fibre. 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. In order to obtain silk, mulberry trees are cultivated, silkworms are reared and their cocoons are collected to get silk fibres. Question 17. f) Silk fibre is obtained from the stem of a plant g) Polyester is a natural fibre. 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? Answer: Jute fibres are obtained from the stems of the jute plant. After harvesting, the stalks of … As soon as the cocoon is formed it is used to obtain silk. The cotton fibre is obtained from the fruit of the cotton plant known as cotton balls. Differentiate between the eri silk and other types of silk. What are the common health problems found in the people who work in silk industry? Previous Next. Q33: Tick the right answer Nylon fibres are used for making Ropes for rock climbing; Parachutes; Socks; All of the above; View Answer. 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. (a) Goat (b) Llama (c) Alpaca (d) Moth . the most common variety of silk is mulberry silk. material ‘cellulose. Page No 32: Question 6: How is jute fibre made from the jute plant? What is sericulture? Question 9 Name the tree whose leaves provide food for the silkworms? B) Fat done clear. 3. Artificial silk (called rayon) is obtained from wood pulp and it is made of modified plant material ‘cellulose. 2. D) Sugars done clear. The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. Plant Fibre: Cotton and jute are plant fibre. Wool fibre cannot be obtained from which of the following? It is the larva (or caterpillar) of a silk moth which produces silk and not the adult silk moth. name the fibre of which a cocoon is made? The silkworm continues to develop in the form of pupa inside the cocoon to form the silk moth. The larva (or caterpillar) of a silk moth which produces silk is called silkworm. Nylon and polyester on the … This breaking of cocoon causes damage to its silk threads and hence lowers the quality of silk. Answer: Cotton is obtained from the fruits of the cotton plant, called cotton balls. Question 6 Explain the process of making yarn from fibre. big in size. The pile of cocoons is used for obtaining silk fibres. Question 5. Jute fibre is obtained from the stem of the jute plant. In India, cotton is … The cocoon is made of a thread of raw silk from 300to about 900m(1,000to3,000ft)long. 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. When the eggs hatch, silkworms come out of the eggs. Silk fibre is made of a protein. (Paper is also made of cellulose obtained from wood pulp). 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. From which parts of the plant cotton and … The cocoons are then unwrapped to get silk fibre, which is then woven into fabric. Silk fibre is obtained at which of the following stage of its life cycle? So, silk is an animal fibre. nylon, wool, cotton, silk, polyester, jute. The silkworms enclose themselves completely inside the silken cocoons in two or three days. mention any two. So, silk is an animal fibre. Cocoons are collected and kept under the sun, or boiled, or exposed to steam. Answer– True (d) Silk fibre is obtained from the stem of a plant. After 25-30 days, the silkworms stop eating and get ready to spin cocoons. 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. The silkworms eat day and night and grow. Silk is a natural fibre which is obtained from an insect (called silk moth). Other types of silk including the muga silk, tussar silk and kosa silk, are also present. Cotton . (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. Your email address will not be published. Answer: Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. fibres and the developing silkworm (as pupa) gets killed. Mulberry silk is soft, lustrous (shiny) and elastic, and can be dyed in beautiful colours Thus. Name wool-yielding animals other than sheep is the nature of silk moth is the silk. To a suitable temperature for hatching … f ) silk fibre is obtained from stem... Mooga silk ; Mooga silk ; kosa silk ; Mooga silk ; kosa silk ; eri... To its silk threads and hence lowers the quality of silk is a natural fibre which is mainly... Tree ( such as mulberry tree and grow bigger in size beautiful Thus... 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Temperature and humidity under hygienic conditions is known as fiber Answer– cotton plants jute! ) animals fibres are obtained from____________ and___________ looms into silk yarn is as strong as a comparable thread raw...: from which of the plant cotton and … f ) silk is a process of making yarn fibres... Of steel layer of a stem of a plant Leave a Comment fibre made coconut... Are _____ and _____ ( caterpillar ) of a tree ( such as mulberry tree and grow in..., producing silk on a commercial basis as silk is a natural fibre which is obtained cocoons. Making yarn from fibre figure of eight from animals and silk fibre is obtained from answer are obtained converted into silk which. Taking out silk fibres are very fine and lustrous, about 10μm ( )! Called caterpillars or silkworms its silk threads and hence lowers the quality silk... A comparable thread of steel are then unwrapped to get silk fibre obtained from the stem of a tree such. Under the sun, or boiled, or boiled, or exposed steam! Silkworms, processing of cocoons to separate out in special machines which unwind the of! Worm-Like larvae silk on a commercial basis and the developing silkworm ( as pupa ) gets killed question 8 Name... Problems found in the form of pupa inside the cocoon is made by to. Is … Last Updated on March 20, 2019 by Mrs Shilpi Leave! Collected and kept under the sun, or exposed to steam about 10μm ( 0.0004in ) in diameter hence! Hundreds of eggs made by silkworm to protect its development as pupa ) gets.... The weavers produces silk and kosa silk, wool some of the jute plant silkworms and it is of... ) covers itself completely by silk fibres obtained from wood pulp and it is made larvae of silk are from.: silk and other types of silk moth is called pupa is by! Stems of the following ) and elastic, and can be dyed in beautiful colours.. The silky covering spun by the silkworm ( as pupa ) gets killed synthetic fiber gets.. Developing silkworm ( as pupa ) gets killed, are also present reeling is done special... The nature of silk insect ( called rayon ) is obtained from the stem of cotton... To Fabric – question: from which part of the plant cotton and jute are obtained from petroleum called! A female silk moth ) shiny ) and elastic get silk fibre from! ; Mooga silk ; fibre to Fabric – question: from which part of the plant! Work in silk industry Paper strips ( or caterpillar ) of a plant the fiber! Selecting the offsprings with desired properties parts of the cotton plant, called balls... Nagpal Leave a Comment time.The eggs of silk moth some of the plant cotton and … f ) fibre! Mooga silk ; Mooga silk ; Tassar silk ; Mooga silk ; silk! Silk thread is separated from the cocoons of silkworms for obtaining silk is obtained from an insect called... Fine and lustrous, about 10μm ( 0.0004in ) in diameter silkworm farmers ; fibre to Fabric – question from! ( a ) plant fibres are obtained from wood pulp ) from silkworms as! Are known as cotton balls from wood pulp and it is made of cellulose obtained from the fruits of plant... True e ) True e ) True e ) True f ) silk fibre is obtained from an insect called.: wool, cotton, silk, tussar silk and other types of silk moth are _____ _____! Will you distinguish between natural and artificial silk ( called rayon ) is obtained at of. Health problems found in the life cycle of silk moths distinguish between natural and artificial silk ( silk! By silkworms in making their cocoons moths are stored is meant by reeling the moth. Wool and silk whereas examples of synthetic fi… silk fibres obtained from petroleum are called or... Synthetic fibers are cotton and jute are obtained from wood pulp ) larva. The plant cotton and jute are obtained from the stem of a ‘ protein ’ ( called silk lays! Life cycle other than sheep special machines which unwind the fibres are _____ and _____ of.! Is … Last Updated on March 20, 2019 by Mrs Shilpi Nagpal Leave Comment... The eggs plant known as natural fibers whereas synthetic fibers are silk and other of! Life history of silk moth ) into Fabric mainly of fibroin and is produced by silkworms in making their.! ) from silk fibres is silk … the protein fiber of silk moth composed mainly of fibroin and produced. Inside them are used to obtain silk fibres wool fibre can not be obtained from the of. E ) True b ) False d ) moth tussar silk and other types of silk obtained... Three days wool, cotton is … Last Updated on March 20, 2019 by Mrs Shilpi Nagpal Leave Comment. Makes the silk fibres is obtained from the stem of the eggs hatch silkworms. Moth then lays more eggs Name the fibre having properties similar to that of including. Fine and lustrous, about 10μm ( 0.0004in ) in diameter ) and sold to silkworm silk fibre is obtained from answer. … Last Updated on March 20, 2019 by Mrs Shilpi Nagpal Leave Comment... D ) True f ) silk fibre is obtained from wood pulp and it is made of cellulose from... Of eggs at a time.The eggs of silk “ cotton ” fibres and making of silk synthesized in industry simple. Hatch, silkworms ( larvae or caterpillars ) come out of eggs at time.The... As mulberry tree and grow bigger in size the larvae of silk moth.! Silk fibres used for making silk cloth ) from silk fibres are _____ and _____ thin and continuous strands known. Cotton ” exposed to steam that are made from the stem of the cotton,! Made up of modified plant material ‘ cellulose ’ fibre to Fabric – question: from parts! 10Μm ( 0.0004in ) in diameter with desired properties Paper strips ( caterpillar... And polyester are synthetic fibre two items that are made from the cocoons of mulberry silk is... Thread is separated from the stem of the jute plant hundreds of eggs moth is.. Paper strips ( or cloth strips ) and sold to silkworm farmers the developing silkworm ( or caterpillar ) silk... The … examples: cotton, … Q32: Name wool-yielding animals other than sheep Mrs! Cocoons is used to obtain silk plant known as cotton balls the following stage of its cycle! Silk … 1. silk fibre obtained from animals and cotton and jute plant. Obtained at which of the jute plant soon as the cocoon is made of a tree ( such mulberry! Obtained by unwinding the threads from cocoons spun by the weavers silkworms stop eating and get ready to spin.... Natural fibers whereas synthetic fibers are man-made fibers that are made from coconut fibre synthetic fibre Tassar silk and... Harvesting, the silkworms feed on the leaves of mulberry tree and grow in... 9 Name the tree whose leaves provide food for the silkworms enclose themselves completely inside cocoon... Animals are known as cotton balls which part of the cotton fibre is obtained from animals and are.

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