NCERT Solutions for Class 7 Science Chapter 3
Important NCERT Questions
7th Chapter 3 Fibre to Fabric
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 4
What is meant by the following terms? (i) Rearing (ii) Shearing (iii) Sericulture
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• Rearing: It is raising and taking care of livestock (e.g. cows, buffaloes, goats etc.); for commercial purposes. These animals are fed, provided shelters and are bred for better yield like milk, meat, wool etc. For example, Sheep are reared mainly for the wool. They are mainly reared in areas with low rainfall. Reared sheep eat grass and leaves. They are also fed on a mixture of pulses, corn, jowar, oil cakes and minerals. In winters they are kept indoors and fed on dry fodder, leaves and grains.
• (ii) Shearing: Once a sheep develops a thick coat of hair, it is shaved off to obtain wool. The process of cutting off the woolen 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 breeding and management of silk worms for the production of silk is known as sericulture. Different types of silk (e.g. mulberry silk, Tassar silk etc.) with different textures are obtained from different varieties of silk moths.
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