A VERY SHORT ANSWER TYPE QUESTIONS
1. Which of the two silk or wool is smooth to touch?
2. Name the process of removal of wool from the body of sheep.
3. Name the animal from which Pashmina wool is obtained
1. Name any five Indian breeds of sheep
5. Deline the term rearing
B. SHORT ANSWER TYPE QUESTIONS
1. Name the factors on which the quality of wool is judged
2. What is a cocoon?
3. What is selective breeding?
4. What is sericulture ?
5. Give one use of each wool and silk
C. LONG ANSWER TYPE QUESTIONS
1. How is silk fibre obtained from cocoons?
2. Why is wool used for winter clothing?
9. How is wool fibre obtained from the sheared wool?
4. Describe the life cycle of silk moth
5. What are the occupational hazards workers face in the silk and wool industry?
Answers
Answer:
A1= SILK
2 SHEARING
3 CASHMERE GOATS
4 nali ,chokla , marwari, magra , and malpura
5 look after and feed sheep's for better wool
B1 evenness, distinctiveness, overall uniformity, and number of crimps in the fibres
2 third stage of larva which weaves around itself is called cocoon
3 Selective breeding is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits by choosing which typically animal or plant males and females will sexually reproduce and have offspring together
4 process of rearing silk from silkworm
5 wool protects from cold and harsh winter and silk is used for clothing
C1 The process of silk production is known as sericulture. ... Extracting raw silk starts by cultivating the silkworms on mulberry leaves. Once the worms start pupating in their cocoons, these are dissolved in boiling water in order for individual long fibres to be extracted and fed into the spinning reel.
2 Wool is a great insulator. It is warm in winter and cool in summer (think vacuum flask). This is because of all the "waves" in the fibre, which lock in air. It may seem strange to us to use wool in the summer, but many Bedouins and Tuaregs use wool to keep the heat out!
3 Shearing is the first step in processingfibre into wool. It is the removal of the fleece of the sheep along with a thin layer of the skin. ... The longer fibresare made into wool for sweaters, while the shorter fibres are spun and woven into woollen cloth.
4 The life cycle of silk moth starts when a female silk moth lays eggs. The caterpillar or larvae are hatched from the eggs of the silk moth. The silkworms feed on mulberry leaves and give rise to pupa. In the pupa stage, a weave is netted around by the silkworm to hold itself.
5 Some of the health hazards faced by wool industry workers are: 1. Respiratory diseases like asthma, bronchitis etc., are very common among these workers. It is because they inhale small hair while sorting and scouring. workers suffer from many in factory diseases and skin diseases........
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Answer:
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