NCERT Solutions for Class 7 Science Chapter 3 : Fiber To Fabric


Given below is a crossword puzzle based on this lesson. Use hints to fill in the blank spaces with letters that complete the words. Down Across (D) 1: Thorough washing (A) 1: Keeps warm 2: Animal fibre 2: Its leaves are eaten by silkworms 3: Long thread like 3: Hatches from egg of Structure moth



Out of the following, which are the two terms related to silk production? Sericulture, floriculture, moriculture, apiculture and silviculture. Hint: (i) Silk production involves cultivation of mulberry leaves and rearing silkworms. (ii) Scientific name of mulberry is Morus alba.


Out of the given terms, those related to silk production are sericulture and moriculture.


Sericulture: Rearing of silkworms for the production of silk is known as sericulture.

Moriculture: Science of mulberry plant cultivation is known as moriculture.


Which of the following does not yield wool?
  1. Yak
  2. Camel
  3. Goat
  4. Woolly dog


  1. Woolly dog


The silkworm is (a) a caterpillar, (b) a larva. Choose the correct option.
  1. a
  2. b
  3. both a and b
  4. neither a nor b


The correct option is iii. both a and b.


Match the words of column I with those given in Column II:
Column I Column II
1. Scouring (a) Yields silk fibres
2. Mulberry leaves (b) Wool yielding animal
3. Yak (c) Food of silk worm
4. Cocoon (d) Cleaning sheared skin




Column I      Column II    
1. Scouring  (d) Cleaning sheared skin
2. Mulberry leaves  (c) Food of silk worm
3. Yak    (b) Wool yielding animal
4. Cocoon   (a) Yields silk fibres      








Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them. Shearing, __________, sorting, __________, ___________.


Shearing, scouring, sorting, drying, carding.


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. Wool is obtained from fleece (hair) of sheep.
  2. White fleece refers to white thick hairy coat of lamb.


What is meant by the following terms?
  1. Rearing
  2. Shearing
  3. Sericulture


  1. Rearing: Bringing up and looking after farm animals is known as rearing.
  2. Shearing: The process of removing the fleece of sheep along with a thin layer of skin is called shearing.
  3. Sericulture: Rearing (raising) of silkworms for producing silk is known as sericulture.


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


Benefits of NCERT Solutions

Following are some of the benefits of using NCERT Solutions by Extramarks.

1. The NCERT solutions for class 7 are prepared keeping in mind the necessary rules and format issued by the CBSE board thus providing students much-needed preview of the exam pattern of questions and preview of the exam that they are going to face during the final exams.

2. The students can be sure about the quality of the solutions as they are committed by highly experienced and expert teachers. These teachers have years of experience and they make sure that there is no mistake committed when preparing the solutions.

3. The NCERT 7 solutions are provided for the questions that are most likely to appear in the exam thus improving the efficiency of the students by helping them prepare for the important parts of the syllabus.

Tips & Strategies for Class 7 Exam Preparation

1. Start your revision early so you can revise well and grasp all the difficult concepts.

2. Organize your study time by making a timetable as it will help you manage your time accordingly.

3. Take mock tests and solve sample papers as they will help you learn time management during the exam and make you familiar with the exam pattern.

4. Take regular breaks, look after yourself by sleeping properly and eating well.

5. Know your exam well, explore the mock tests, and practice sample papers as much as you can.

Why Choose Extramarks CBSE Class 7 Study Materials?

1. The solutions have been compiled keeping in mind the purpose of scoring high marks in exams thus they have everything that the students need to prepare for exams.
2. The NCERT solutions for class 7 are designed in a clear and simple language complete with diagrams so that the students understand the subject well.
3. The NCERT 7 solutions are accurate thus improving their reliability.
4. The solutions are designed by expert and experienced teachers that help in removing all doubts out of the solutions and improving the credibility of the answers.

Frequently Asked Questions

Is class 7 Math NCERT book sufficient for prepare for the exams?

Yes, the NCERT book has been designed keeping in mind the pattern of paper that will be presented in the exam to students. The NCERT book is sufficient to study for the exam as it has everything related to the exam and contains all information out of which the questions will be asked in the exam. But if you want to prepare a little bit extra, we suggest that you go through the NCERT class 7 solutions.

When to refer to NCERT solutions for class 7th?

When you are studying the NCERT book for math and other subjects for your class 7 exams, refer to the NCERT class 7 solutions simultaneously so you can see where you are going wrong and what are you getting right in your exercises’ attempt.

Why are the NCERT solutions important for Class 7th?

The class 7th is very crucial as it is among the major middle school classes during which the child’s base is formed in math and science and even in other subjects like English. Thus, it is students must study smartly in this class and ace their exams while getting all the help they need from the NCERT 7 solutions given by Extramarks.

Can I rely on the NCERT solutions for class 7 Math at Extramarks to perform well in the annual exam?

Yes, absolutely. The NCERT solutions provided by Extramarks for class 7 are eloquent and elaborate at best and are thus useful for students studying for the final exams of class 7. The students will have many questions and doubts regarding the NCERT solutions for class 7 and this is why the solutions have been elaborated well to help students understand the answers to exercises.

Do you provide NCERT solutions for Class 7 Math for free?

Yes, the NCERT solutions for Math and other subjects for class 7 are available for free from Extramarks.

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