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Why wool yielding animals have a thick coat of hair class 7

Wool yielding animals are found in hilly and the colder regions. they have thick coat of hair on their body to protect themselves against the cold climatic condition. They do so by trapping the heat in their coat which helps in keeping them warm Answer: Certain breeds of sheep have thick coat of hair on their body which yields good quality wool in large quantities. As these sheep are selectively bred with one parent being a sheep of good breed. The process of selecting parents for obtaining special characters in their offspring is known as selective breeding

why do wool yeilding animals have thick coat of hair on

The wool-yielding animals have a thick coat of hair on their body to keep them warm during cold winter season. The hair (or wool) trap a lot of air. Air is a poor conductor of heat. So, the air trapped in hair (or wool) of these animals prevents their body heat from being lost to cold surroundings and keeps them warm in winter Ans: The thick coat of hair on their body traps a lot of air. Air is a poor conductor of heat, thus, hair keeps sheep warm. Q4: Define a fibre. View Answer. Ans: A fibre is a long strong thread, which is obtained from natural sources like plants or manmade sources like synthetic fibres, e.g: Rayon (24) Ans:- Wool yielding animals like sheep have a thick coat of hair on their body because to keep them warm during cold winter season. (25) Ans:- Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres Answer: The wool yielding animals like sheep, goat, yak, etc., have a thick hair on their body. Hair trap a lot of air. Air is a poor conductor of heat, which does not allow the heat absorbed to release from their body and keeps them warm

This exemplar solutions have detailed explanations to 10 MCQs, answers to 3 very short answer questions, 7 short answer questions and detailed answers to 7 Long answer questions. This exemplar covers questions on fibres like silk and wool, their source of production, different animals reared for wool production and methods of production of fibres Wool fibres obtained from the fleece of sheep and goat are preferred clothing during winters. Animals like sheep and goat have a very thick coat of hair (fleece) to trap air. Woollen clothes keep us warm because the air trapped in the hair prevents the loss of heat from our body. Page No 42 2 Angora Rabbit. The one and only breed of rabbit that can be in the list of animals that produce wool is no other than Angora Rabbit. It is the fluffy and domestic rabbit that is bred for the long fibers of its coat. The wool from them is called Angora Wool, and it is gathered by shearing, combing, or plucking Wool is an animal fibre. It is present as a thick coat of hair on the body of certain animals and keeps them warm. Air gets trapped in the spaces between the hair and does not allow the body heat to escape. That is why we wear woollen clothes in winter Why do animals like yak, goat and sheep have a thick coat of hair? 2. Explain why shearing does not hurt the sheep. Wool yielding animal (c) Food of silkworm 2 . (dhReeling- (e) Cleaning sheared skin 2. 3. 4. Long hair on the body protect the animals from Cashmere goat is found in the mountains of China an

• The wool yielding animals have a thick coat of hair. Hair trap a lot of air. Air is a poor conductor of heat. So, hair keeps these animals warm The wool yielding animals have a thick coat of hair which trap a lot of air

Q 17 Name any four wool-yielding animals. Marks (2) Q 18 (i)What is selective breeding? (ii) Name most common silk moth. Marks (2) Q 19 Name two types of fibres which form the hairy skin of the sheep. Marks (2) Q 20 Why wool yielding animals have a thick coat of hair? Marks (2) Q 21 Names four varieties of silk. Marks (2 Ans. Some animals have thick coat of hair because hair trap a lot of air. Air being a poor conductor of heat, acts as an insulator and does not allow the heat energy of their bodies to escape. So, the thick coat of hair keeps these animals warm Wool is a natural animal fibre obtained from sheep, goat, yak, camel, etc. All these animals have an outer covering of hair, which is shaved off to obtain wool fibres. Animal fibres are naturally obtained from animals. Some animals that live in cold places generally develop a thick coat of hair on their body Sheep shearing is avoided in the winters so as to allow the sheep to keep itself warm with its thick coat of hair. This wooly coat protects the sheep from the harsh winter conditions. In summers, sheep need to keep their body cool and no more need the thick coat of wool. Thus, shearing is done in the summers and not in the winters Certain breeds of sheep have thick coat of hair on their body which yields good quality wool in large quantities. As mentioned earlier, these sheep are selectively bred with one parent being a sheep of good breed. Once the reared sheep have developed a thick growth of hair, hair is shaved off for getting wool. Processing fibres into wool

Fibre to Fabric Important Questions Class 7 Science

  1. Fibre to Fabric Class 7 Science Extra Questions Very Short Answer Type. Question 1. Name the sources of obtaining fibres. The sources of obtaining fibres are plants and animals. Question 2. Name some wool yielding animals. Wool yielding animals are sheep, yak, llama, alpaca, angora goat, angora rabbit and camel. Question 3
  2. Once a sheep develops a thick coat of hair, it is shaved off to obtain wool. The process of cutting off the woollen fleece of sheep with a thin layer of skin is called shearing. It is done by the machines similar to those used by barbers to remove hairs. (iii) Sericulture: The rearing of silkworms for obtaining silk is called sericulture
  3. (ii) Gaddi Sheep Breed - wool is fine and lustrous and it is used for manufacturing of high quality kulu shawls and blankets. 6. (a) Why do wool yielding animals have a thick coat of hair on their bodies? Ans. wool yielding animals have a thick coat of hair on their bodies so that sheep can withstand with cold weather
  4. 4.Why do wool-yielding animals (like sheep) have a thick coat of hair on their body? Ans: Wool yielding animals like sheep have a thick coat of hair on their body to keep them warm during cold winter season. 25. Explain why, a woollen garment keeps us very warm in winter

Answer: Wool is obtained from the fleece or hair of sheep. Question: Name the natural fibre obtained from insects. Answer: Silk. Question: In which part, the wool yielding animals llama and alpaca are found? Answer: Llama and alpaca are found in South America. Question: For what purpose, rearing of sheep is done Grade 7 Fibre to Fabric Worksheets. November 11, 2020. November 10, 2020 by worksheetsbuddy_do87uk. A. You must be familiar with the following nursery rhymes: 1. 'Baa baa black sheep, have you any wool.'. 2. 'Mary had a little lamb, whose fleece was white as snow.' Q. 15. To which class of organic substances does silk fibre belong? Ans. Protein. Q. 16. Wool comes from sheep, goat, yak and some other animals. Why these animals have a thick coat of hair? Ans. Hair trap a lot of air. Air is a poor conductor of heat. So hair keeps these animals warm Wool is a natural animal fibre obtained from sheep, goat, yak, camel, etc. All these animals have an outer covering of hair, which is shaved off to obtain wool fibres. Animal fibres are naturally obtained from animals. Some animals that live in cold places generally develop a thick coat of hair on their body

Q.3. Why do some animals have thick coat of hair? Ans. Some animals have thick coat of hair because hair trap a lot of air. Air being a poor conductor of heat, acts as an insulator and does not allow the heat energy of their bodies to escape. So, the thick coat of hair keeps these animals warm. Q.4. What do you mean by the term 'breeding of. To be done in NB 1 Why do animals have a thick coat of hair on their body? Define selective breeding. List the animals that yield wool. What do the rearers feed the sheep? What do you mean by shearing 3. Why do some animals have a thick coat of hair on their body? 4. What are the two types of fibres which form the hairy skin of the sheep? 5. Write a short note on the food habit of sheep. 6. Name some Indian breeds of sheep and mention the states where they are reared. 7. From which animal, wool for 'pashmina shawls' is obtained? 8 Why do animals have a thick coat of hair on their body? Define selective breeding. List the animals that yield wool. What do the rearers feed the sheep? What do you mean by shearing? 2 May 2017. IMPORTANT (02/05/2017) Posted in ACADEMICS by dpstapi7a. DPS TAPI CLASS 6 Wool comes from sheep, goat, yak and some other animals. These wool-yielding animals bear hair on their body. Yak wool is common in Tibet and Ladakh. Angora wool is obtained from angora goats, found in hilly regions such as Jammu and Kashmir. Wool is also obtained from goat hair. The under fur of Kashmiri goat is soft

The most common wool animal is the sheep. Sheep can be categorized into three major types when it comes to wool production: fine wool, medium and coarse wool, and hair-type. Fine wool sheep produce the smallest micron of wool and include the Merino types, Rambouillet and Debouillet. This wool is commonly used in clothing production Animal Fibers are textile fibers obtained from animals. They are basically hair or fur or skin or secretions of animals. These fibers are then woven or knitted or felted to form beautiful Animal fabric and ultimately made into soft and warm jackets, ponchos, blazers, wraps, shawls, coats and other clothing and accessories. Carpets, rugs and blankets are made with rougher fibers Study Material and Notes of Ch 3 Fibre to Fabric Class 7th Science. → Wool and silk fibres are obtained from animals. → Wool is obtained from the fleece (hair) of fleece sheep or yak. Silk fibres come from cocoons of the silk moth. → Wool comes from sheep, goat, yak and some other animals who are having hair on their body You must be familiar with the following nursery rhymes. (i) 'Baa Baa! Baa Baa! Black sheep, have you any wool.' (ii) 'Mary had a little lamb, whose fleece was white as snow.' Answer the following: (a) Which parts of the black sheep have wool? (b) What is meant by the white fleece of the lamb

Animals have some amazing adaptations that help them live in even the most hostile environments. Consider camels, for instance. They can thrive in some of the hottest and driest places on Earth. Their legs don't get burned when they kneel on hot sand due to thick leathery patches on their knees. NCERT Book for Class 7 Science Chapter 3 Fibre to Fabric is available for reading or download on this page. Students who are in Class 7 or preparing for any exam which is based on Class 7 Science can refer NCERT Science Book for their preparation. Digital NCERT Books Class 7 Science pdf are always handy to use when you do not have access to. Fleece from coated sheep had an average of 0.7% VM. The coats also improved yield and reduced fleece rot. Sheep coats improved the value of the wool sold by an average of $3.40 per head but in some cases was up to $8.51 per head. Click to download the Economic Viability of Sheep Coats for Wool Production Final Report (PDF 350Kb) CLASS: VII Time Allotted: 40 minutes. 12.01.2020 Max. Marks: 20 America also yield wool. (a) Llama and Yak (b) Angora goat and Yak. (c) Alpaca and Why do wool yielding animals have a thick coat of hair? 2 End of the Question paper. Author: Saju_P Created Date

Fibre to Fabric CBSE Science Class 7 Chapter Wise Solved Q&

  1. What is shearing class 7? (ii) Shearing: The process of removing the fleece of the sheep along with thin layer of skin is called shearing. Once a sheep develops a thick coat of hair, it is shaved off to obtain wool. The process of cutting off the woollen fleece of sheep with a thin layer of skin is called shearing. What animal gives natural fibers
  2. Sheep hair is sheared off from its body, scoured, sorted, dried, dyed, spun and woven to yield wool. Yak wool is common in Tibet and Ladakh. The fur on the body of camels is also used as wool. The rearing of silkworms for obtaining silk is called sericulture. Silk fibres are made of a protein. Weaver weaves silk thread into silk clothe. Chapter 3
  3. ated most of the long, coarse hairs for

Wool is the textile fibre obtained from sheep and other animals, including cashmere and mohair from goats, qiviut from muskoxen, hide and fur clothing from bison, angora from rabbits, and other types of wool from camelids.. Wool consists of protein together with a small percentage of lipids.In this regard it is chemically quite distinct from the more dominant textile, cotton, which is mainly. • Thick, meaty, and correctly finished Yield: • Dressing percentage (weight of chilled carcass/weight of live animal) • 3/8 inch pelt (skin and wool) Quality: • refinement of head, hide, bone, and hair Balance: • general structure or proportion • correctly proportioned Style: • the way the animal shows and carries itsel Dorper. Overview: The Dorper is a South African mutton breed developed in the 1930's from the Dorset Horn and Blackheaded Persian.The breed was developed for the arid extensive regions of South Africa. One of the most fertile of sheep breeds that is hornless with good body length and a short light covering of hair and wool 6. Alpaca. Alpaca wool is obtained from the hairs of the Alpaca, an animal native from South America which produces some of the finest hair. Alpaca hairs are very fine and soft, having a diameter of only 15-40 microns, but those that are over 30 microns can be itchy so they're not suitable to make clothing items The Awn Fluff is found between the underwool and Awn Hair. The Awn Hair, also known as guard hair, is the third type of fiber. The Awn Hair is a strong straight hair that protrudes above the wool and must be present and evident. The classification of the Giant Angora is different from the other three breeds owing to it being a 6-class animal

Alpaca and llama fleece are classified as specialty or luxury fibers, but sheep fleece or wool tops the list of animal fibers used today. The camelids (alpaca and llama) are quite similar to each other in fiber and background, and though they bear some similarity to sheep, the differences between the fibers of these herding animals are outstanding Wool comes from sheep. They grow a wool coat and once a year this wool coat is sheared off the animal. In Wisconsin, this is frequently done in the early spring shortly before they have their lambs. A shorn ewe will be more likely to stay out of the wind and bad weather and protect her new-born lamb if she does not have a thick wool coat on her. 2 Animals with lighter-colored, short hair coats and dark skin are most adapted. High humidity intensifies effects of heat, especially since hot, humid climates often add the stresses of parasites and low-quality forage. Heat with humidity stresses cattle that fail to shed long, thick hair coats, particularly dark-colored ones Giant Angoras are the largest of all Angoras and are the only 6-Class animal in the breed. The fur of the Giant Angora contains three varieties of fiber: underwool; awn fluff and guard hair. The underwool is the most prominent. The Giant Angora does not naturally shed. Its wool must be harvested by hand shearing

Hair is hollow and therefore much stronger, warmer, and softer than sheep wool. Llamas were not originally bred for their coats, but for work animals and as result llamas have a course outer coat (guard hair) and a soft under coat (down). To remove the hair from the animal, it must be sheared off or brushed off. It takes two full years for the. Wool Yield: 0.817 kg per annum. Wool Quality: Medium fine with average fiber dia-meter 34.90 micron (u) and staple length 10.10 centimetres. The wool in good sheep is lustrous and under coat is used for manufacture of kulu shawls and blankets Various camels, goats, and rabbits produce hair that is also classified as wool. In scientific terms, wool is considered to be a protein called keratin. Its length usually ranges from 1.5 to 15 inches (3.8 to 38 centimeters) depending on the breed of sheep The Most Beautiful Women Forecasting the Weather. Beauty and Personal Care August 06, 2020. By YouTube. Start Slideshow. While accurately predicting the weather is an incredibly difficult task, accurately describing the most beautiful weather girls isn't as tough. Thanks to the internet and social media, weather girls have become incredibly. These Types of sheep breeds are used for hunting, hair and beautiful horns. The meat is lean and lacks muttonly flavored as other wool breeds have that is good for people who dislike strong mutton smell. Some of the hair sheep breeds are obtained by mating the cross-cultural breeds like Jacob sheep, Merino and Rambouillet

Lakhmir Singh Manjit Kaur Class 7 Science 3rd Chapter

Lots of other options for textiles and cordage: Dogs that have a double coat, rabbit fur, human hair, dogbane, milkweed, flax, barks, agave, yucca obviously some are more suited to cordage than textiles but just about any animal with a coat has some uses for it's fur or if nothing else, it's leather This process loosens the fibers and allows the skin to absorb various tanning chemicals. Usually, sodium sulfide and hydrated lime are used to treat the hide, as they remove keratinous material such as hair and wool. Fats get hydrolyzed as the pH increases. Water is absorbed into the skin fibers, resulting in a swollen skin structure. 7) De-Limin The negative relationship between yield and quality of milk may explain why twin-bearing ewes that produce more milk have lower concentrations of fat and protein in the milk. The contrasting result reported by Gardner and Hogue (1964) may be due to the small number of ewes (10 single- and 10 twin-bearing ewes) used in their experiment

Zep is a leading innovator of cleaning solutions for retail, food & beverage, industrial & institutional, and vehicle care customers. For over 80 years, Zep has developed the most effective products trusted by professionals and consumers to get the job done right the first time From high-performance technical fleece to cushy apres and style pieces, the wool sweater has become a must-have in every guy's winter wardrobe. Check out our list of the best wool sweaters

Fibre to Fabric Class 7 Extra Questions and Answers

Science Class 7th Project On Information On Wool Yielding Animals From Chapter. Fibres to Fabrics S. No. Name of the wool yielding animal. 1. Lohi Sheep. 2. Rampur Bushair Sheep. 3. Nali Sheep. Picture. Information Where it is found and what kind of wool does it provide etc. Found in Rajasthan and Punjab, India Wool is the most commonly used animal fiber. The fiber is obtained from the soft, hairy covering of sheep and sometimes goats. Under the microscope, the wool fiber looks like a long cylinder with scales on it. The fiber is very curly and springy. Cloth made from wool includes cashmere, camel's hair, alpaca Contact with contaminated hair, wool, or hides (particularly during processing) or contact with products made from them, which can lead to either inhalational or cutaneous anthrax. Animal hair from endemic regions continues to represent an occupational risk for modern woolworkers (Wattiau 2008) Supplementary feeding of sheep, with grain, hay or silage is necessary when pastures or stubbles are deficient in energy and protein. A good supplementary feeding program will ensure sheep utilise as much dry paddock feed as possible as well as provide sufficient supplementary feed for maintenance or growth. The Department of Primary Industries and Regional Development recommends supplementary.

NCERT Exemplar solutions for Class 7 Science Chapter 3

NCERT Solutions for Class 7 Science Chapter 3 - Animal

Wooly Creatures: 10 Fluffy Animals That Produce Wool For U

Your customizable and curated collection of the best in trusted news plus coverage of sports, entertainment, money, weather, travel, health and lifestyle, combined with Outlook/Hotmail, Facebook. Lanolin is produced by washing the sheep's wool in hot water and using a unique detergent to remove anything trapped in the wool, such as dirt or sweat salts. Harvesting lanolin is done humanely and no sheep are harmed. The sheep are not sprayed with any pesticides but could have trace amounts of pesticides depending on where they graze Learn how to do just about everything at eHow. Find expert advice along with How To videos and articles, including instructions on how to make, cook, grow, or do almost anything chap. 42.—peculiar remedies derived from various animals, and classified according to the maladies. remedies against the poison of serpents, derived from the stag, the fawn, the ophion, the she-goat, the kid, and the ass. chap. 43.—remedies for the bite of the mad dog. remedies derived from the calf, the he-goat, and various other animals Quora is a place to gain and share knowledge. It's a platform to ask questions and connect with people who contribute unique insights and quality answers. This empowers people to learn from each other and to better understand the world

Go plastic free this July. It's always better naked. So choose to refuse single-use plastics with our naked shampoo bars, shower bombs and handmade soaps. Meet your match Even those investigators who have recognized the importance of corroborating these accounts, and have tried to do so, have published only the most sketchy of reports of them (Clark, 1984, pp. 242-243; Owens, 1995, pp. 160-162; Ring & Lawrence, 1993)

Which Animals Does Wool Come From - A Plus Toppe

Shop online for bulk Dollar Tree products, perfect for restaurants, businesses, schools, churches, party planners & anyone looking for quality supplies in bulk The Swift and Merciless Execution of Corrine Sykes. T he car pulled away from the curb, gliding through the narrow cobbled streets. A few gas lights were starting to come on, illuminating the listing row houses huddled together. On the barren streets, patches of dirty snow remained $5.88 $ 5. 88 ($0.49/Ounce) $7.99 $7.99 This spray foam insulation comes with a straw applicator to help homeowners seal cracks and gaps in wood, concrete, stone, and other materials. Most user-friendl The foot-and-mouth disease is a highly communicable disease affecting cloven-footed animals. It is characterized by fever, formation of vesicles and blisters in the mouth, udder, teats and on the skin between the toes and above the hoofs. Animals recovered from the disease present a characteristically rough coat and deformation of the hoof

I love eBay, but what I don't love is the crazy amount of scrolling I have to do. Sometimes my searches yield over 20 pages — ugh! If you share my pain, there's a cool solution: PicClick.com. It's super simple, just type in your search terms per usual and start browsing this more user-friendly eBay A cotton farm in Texas, a sheep ranch in Wyoming-these raw materials would have been sent to any number of mills across the country and then been sold at working class stores such Wards and Sears-this small production cycle was not a design concept from a sustainability think-tank, it was simply the way things were done Oil can also coat an animal's fur or feathers, leading to hypothermia and a loss of buoyancy. Preventing spills is the best way to protect wildlife from oil spills. When oil is spilled, however, responders try to (1) prevent it from reaching animals and sensitive environments, (2) keep animals away from the oil, and (3) capture and rehabilitate. Why the layman was forbidden a mixture of wool and linen (sha'atnēz, Deut. xxii. 11) is difficult to explain, though Maimonides perhaps correctly regarded the law as a protest against heathenism (on the magical use of representatives of the animal and vegetable kingdom, in conjunction with a metal ring, see I. Goldziher, Zeit. f. alttest 2. Size matters: Most men's scarves are sized 150 cm x 30 cm/60″ x 12″. The problem is, that this is simply too short to tie scarves properly. as such, the ideal dimensions for a cashmere, wool or Alpaca scarf are 180 cm x 30 cm/72″ x 12″. A thinner silk scarf can be 2-3 inches wider or longer, but that's about it

Class 7 Science Chapter 3 MCQ (Multiple Choice Questions

It was Tuesday morning, and hungover I decided to slowly trudge to her usual spot. I expected to see a shock of red hair but instead all I found was her coat, and her dog. Her dog was her eternal companion. He was a mangy mutt, always shivering and barking but she loved him as only an owner can. Apart from me I think he was her only friend Gabra Manfas Qeddus (died c.1400), appearing with a lion and wearing a cloak made from his own hair, was a hermit and ascetic especially gifted with animals. Abuna Ewostatewos (c.1273-1352), bearing a long beard and handheld cross, founded monasteries in the Tigray region of northern Ethiopia Where c = speed of sound in meters or feet per second, f = frequency in Hz, and λ = wavelength in meters or feet.. Sound Pressure. The vibrations associated with sound are detected as slight variations in pressure. The range of sound pressures perceived as sound is extremely large, beginning with a very weak pressure causing faint sounds and increasing to noise so loud that it causes pain For polyurethane (PUR) and polyisocyanurate (PIR) foam insulation systems, our high-performance surfactants boost energy efficiency. Typical applications include: Foam core laminate. Pour-in-place insulation. Spray insulation polyol blends. Compatible with polyester and polyether polyol formulations, the surfactants simplify the mixing of.

Fibre to Fabric - Nakul Kumar Dha

You may have a very smart coat, he said, but you would be a great deal better off if you had a little more smartness inside your head and less on your ribs, the way I am. That's what I call real beauty. A fine coat is not always an indication of an attractive mind Let Overstock.com help you discover designer brands & home goods at the lowest prices online. With free shipping on EVERYTHING*. See for yourself why shoppers love our selection & award-winning customer service Matelasse—A silk and wool or all wool brocade, usually for coats. Melton—A stout woolen cloth, fulled, sheared, and finished without a nap; like Kersey, but without a gloss. Merino—A thin woolen fabric made of the fine wool of the marion sheep, generally used for women's and children's wear, vestings, and underclothing GET FREE SHIPPING & RETURNS! We have 1000s of styles of shoes & Zappos legendary 365-day return policy + 24/7 friendly customer service. Call 1-800-9

Wool - Extraction of Wool from Sheep & Uses of Wool with