Study MaterialsNCERT SolutionsNCERT Solutions For Class 7 ScienceNcert Solutions for Class 7 Science Chapter 3 Fibre To Fabric

Ncert Solutions for Class 7 Science Chapter 3 Fibre To Fabric

NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric

Subject specialists have designed NCERT solutions for Science Class 7 Chapter 3 which includes thorough solutions for reference. These solutions are updated according to the latest CBSE syllabus for 2012-22 and are provided in easy language for understanding. Tips and tricks are also provided.

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    These solutions are provided so a student can clear his doubts and get help with a deep understanding of the concept. Also, you can refer them to make the chapter notes and revisions notes. PDF of this can also be downloaded from the website.

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      1. You must be familiar with the following nursery rhymes:

      1. “Baa baa black sheep, have you any wool”
      2. Mary had a little lamb, whose fleece was white as snow”.

      Answer the following:

      1. Which parts of the black sheep have wool?
      2. What is meant by the white fleece of the lamb?


      1. The hairy skin called fleece has wool in black sheep.
      2. White fleece means hairy skin which is white in color.

      2. The silkworm is

      1. a caterpillar,
      2. A larva – choose the correct option.
      1. a
      2. b
      3. both a and b
      4. neither a nor b

      Ans: iii) both a and b

      3. Which of the following does not yield wool?

      1. yak
      2. camel
      3. goat
      4. woolly dog

      Ans: iv) Woolly dog

      4. What is meant by the following terms?

      1. Rearing
      2. Shearing
      3. Sericulture

      Ans :

      1. Rearing: Rearing of animals means taking care of economically useful animals by managing___their breeding, feeding, medical care, etc for obtaining one (or) more of their product useful for___ human beings”. Eg: Apiculture, Sericulture
      2. Shearing: The process of removing the fleece of the sheep along with a thin layer of skin is____called shearing.
      3. Sericulture: The rearing of silkworms for obtaining silk is called sericulture.

      5. Given below is a sequence of steps in the process of wool. Which are the missing steps. Add them.

      Shearing, …………….., Sorting, …………….., …………….., ……………..,

      Ans: Shearing, Scouring, Sorting, picking out of burrs, dying (coloring), rolling.

      6. Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.

      Ans :

      7. Out of the following, which are the two terms related to silk production? Sericulture, flori culture, moriculture, Apiculture, Silviculture

      Hints :

      i) Silk production involves the cultivation of mulberry leaves and rearing silkworms

      ii) Scientific name of mulberry is Morus alba.

      Ans : Sericulture, moriculture

      8. Match the words of Column I with those given in column – II

      Column – I Column – II

      1) Scouring a) Yields silk fibers

      2) Mulberry leaves b) Wool yielding animal

      3) Yak c) Food of silkworm

      4) Cocoon d) Reeling

      e) Cleaning sheared skin

      Column – I Column – II

      1) Scouring e) Cleaning sheared skin

      2) Mulberry leaves c) Food of silkworm

      3) Yak b) Wool yielding animal

      4) Cocoon a) Yields silk fibers

      9. Given below is a crossword puzzle based on this lesson. use hints to fill in the blanks shapes with letters that complete the words.

      D: Down

      1) Thorough washing

      2) Animal fiber

      3) Long thread-like structure

      Ans: Across

      1) Keeps warm

      2) Its leaves are eaten by silkworms

      3) Hatches from the egg of a moth


      Importance topics covered in Class 7 Science NCERT Solutions

      • Fibers
      • Types of fibers
      • Silk
      • Wool
      • Sources of wool
      • How to process wool fiber?

      NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric

      Students can use these NCERT Solutions for any quick revisions of class 7 Science Concepts.

      1. Fibres – Fine, long, filaments or continuous threads are obtained from the animals and plants. There are 2 types of fiber. They are – Plant fiber and Animal fiber.
      2. Silk – Silk, and woolen are the usual fibers received from animals. Silk is received from the silkworms whilst, wool is fetched from the goat, sheep, and yak. Therefore, wool and silk are animal fibers.
      3. Animal fiber – Hair of alpaca, llama and camel are manufacture to produce the wool. Generally, in India, sheep are used for getting the wool. The hair of the sheep is shaved off from the body, cleansed, dried, sorted, coloured, gyrated and woven to get the wool.
      4. Sources of wool – Wool is obtained from yak, Angora goat, sheep, goat, camel, Alpaca etc.,

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      Frequently Asked Questions on NCERT Solutions of this chapter

      What are the important topics covered in these NCERT Solutions?

      The important topics covered are –
      1. Fibres
      2. Types of fibers
      3. Silk
      4. Wool
      5. Sources of wool
      6. How to process wool fiber?

      How many questions are present in Chapter 3 of NCERT Solutions for Class 7 Science?

      There is a total of 9 questions present in these NCERT Solutions. To understand how to answer the textbook questions, students must use the solutions PDF from Infinite learn. The solutions are designed by the subject matter experts in an accurate and simple manner to help students perform well in the annual exam.

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      NCERT Solutions of this chapter is available on Infinity Learn app and website free of cost. 

      • Visit the page-NCERT Solutions of this chapter.  
      • Click on the download button. 
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      • You can save the PDF file and use NCERT Solutions anytime for the understanding of the concept and as quick revision notes.
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