NCERT Solutions for Class 7th Science
Chapter 3. Fibre to Fabric
Additional Questions with Solutions
Additional Short Answered Questions:
Ques1: Name the animal fibres.
Ans: Wool and silk.
Ques2: Where does wool obtain from?
Ans: Wool obtains from animals like sheep, goat, yak and some other animals.
Ques3: What is sericulture?
Ans: The rearing of silkworms for obtaining silk ios called sericulture.
Ques4: What is cocoon?
Ans: The caterpillar completely covers itself by silk fibers and turns into pupa. This covering is known as cocoon.
Ques5: Define term selective breeding.
Ans: The process of selecting parents for obtaining special characters in their offspring, such a soft under hair in the sheep, is ‘termed selective’.
Ques6: What types of wool fibres are mostly found from sheep that form its fleece?
Ans: The sheep has two types of fibres.
(i) The coarse beard hair.
(ii) The fine soft.
Ques7: What occupational hazard may be the workers in wool industry?
Ans: They may get infected by a bacterium, anthrax. Which causes a fatal blood disease called sorter’s disease.
Ques8: Where does Pashmina shawls make?
Ans: Jammu and Kashmir.
Ques9: By which animal is Angora wool obtain?
Ans: Angora goat of Jammu and Kashmir.