Q1 Differentiate between plant fires and animal fibres
Q2 How is wool obtained from sheep ?
Q3 How does wool Fibre keep our body warm ?
Q4 Name any 3 breeds of sheep and mention the products that can be obtained from them .
Q5 Write down the factors that determine the quality of wool .
Answers
1) Plant fibres include seed hairs, such as cotton; stem (or bast) fibres, such as flax and hemp;leaffibres, such as sisal; and husk fibres, such as coconut. Animal fibres include wool, hair and secretions, such as silk.
2) Wool is obtained from the sheep by a long process which involves the following steps:Shearing, Scouring, Sorting. Dyeing, Combing and Spinning.
3) Holds heat, Wool has a natural layer of keratin, a protein all animal hair contains which helps maintain body temperature. On top of that, wool hair fibres act as an insulator to trap the air inside the cloth, which helps stabilise your body temperature.
4) Merino.
Leicester Long-wool Sheep.
Lincoln sheep.
5) Many factors determine the quality (and value) of wool. These include fiber diameter, crimp, yield, color, purity, and staple length and strength. Fiber diameter, also called fineness, is the actual measurement of the thickness of the wool fiber.
hope it is helpful.