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How do the hair of certain animals help in keeping their bodies warm?
Answer:
Hair traps air in the body, which is a poor conductor of heat resulting in raising warmth.
To which class, animal fibre or plant fibre, artificial silk belongs to?
Answer:
Artificial silk is a plant fibre . It is produced using bamboo trees , and is hence also known as bamboo silk .
What is the maximum length of continuous silk thread that can be obtained from a cocoon?
Answer:
The maximum length of continuous silk thread that can be obtained from a cocoon - of continuous length - is more than that of 1000 feet (1000 to 1500 feet).
Silk yarn of different textures can be prepared. Explain the statement.
Answer:
Silk yarn is obtained from the cocoon of the silk moth.
There is a variety of silk moths, which look very different from one another and the silk yarn they yield is different in textures (coarse, smooth, shiny, etc.).
Thus, tassar silk , mooga silk , kosa silk , etc are obtained from cocoons spun by different types of moths.
How do we get wool from sheep?
Answer:
Once the reared sheep has developed a thick growth of hair,
hair is shaved off for getting wool.
How is silk yarn obtained?
Answer:
Silk yarn is obtained from the cocoons of silk moths .
What are the types of silk obtained from cocoons spun by different types of moth?
Answer:
Tassar silk, Moonga silk, Kosa Silk, Mulberry Silk are different types of silk obtained from cocoon spun by different types of moth.
