NCERT Solutions Class 7 Science Chapter 3 – Free PDF Download
*According to the latest update on the CBSE Syllabus 2023-24, this chapter was removed.
NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric are prepared by the subject professionals to help students in their studies. For easy access, we at BYJU’S, provide free NCERT Solutions for Class 7 Science for all chapters in PDF format. Students can either practise these questions online or can also download these PDF files and use them for their Fibre to Fabric Class 7 worksheets.
The NCERT Solutions for Class 7 Science provide detailed explanations and other information related to this chapter, along with the different types of solved questions, including objective, short and long types of questions from an exam point of view. These solutions help to develop confidence among students who are preparing for exams. Access the NCERT Solutions for Class 7 Science Chapter 3 both online and offline as a downloadable PDF from the link provided below.
Access Answers of NCERT Class 7 Science for Chapter 3 – Fibre to Fabric
1. You must be familiar with the following nursery rhymes:
(i) ‘Baa, baa, black sheep, have you any wool.’
(ii) ‘Mary had a little lamb, whose fleece was white as snow.’
Answer the following.
(a) Which parts of the black sheep have wool?
(b) What is meant by the white fleece of the lamb?
a) Wool is obtained from the hairy fibres of the sheep.
b) White fleece of the lamb refers to the white colour of their fur.
2. The silkworm is (a) a caterpillar, (b) a larva.
Choose the correct option.
(i) a (ii) b (iii) both a and b (iv) neither a nor b.
(iii) both a and b
3. Which of the following does not yield wool?
(i) Yak (ii) Camel (iii) Goat (iv) Woolly dog
The answer is (iv) Woolly dog
4. What is meant by the following terms? (i) Rearing (ii) Shearing (iii) Sericulture
i) Raising of domestic animals like sheep, goats, yak, cows and buffaloes for commercial purposes, such as for milk and fur is known as rearing.
ii) Shearing is a process of removal of animal hair by using machines similar to those used by barbers.
ii) Rearing of silkworms to get silk is known as Sericulture.
5. Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them.
Shearing, __________, sorting, __________, __________, _________.
Shearing, Scouring, sorting, picking of burrs, dying of fibres, making of yarn.
6. Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.
7. Out of the following, which are the two terms related to silk production?
Sericulture, floriculture, moriculture, apiculture and silviculture.
Hints: (i) Silk production involves the cultivation of mulberry leaves and rearing silkworms. (ii) Scientific name of mulberry is Morus alba.
Sericulture and moriculture
8. Match the words of Column I with those given in Column II.
|1. Scouring||(a) Yields silk fibres|
|2. Mulberry leaves||(b) Wool-yielding animal|
|3. Yak||(c) Food of silkworm|
|4. Cocoon||(d) Reeling|
|(e) Cleaning sheared skin|
|1. Scouring||(e) Cleaning sheared skin|
|2. Mulberry leaves||(c) Food of silkworm|
|3. Yak||(b) Wool-yielding animal|
|4. Cocoon||(a) Yields silk fibres|
9. Given below is a crossword puzzle based on this lesson. Use hints to fill in the blank spaces with letters that complete the words.
(D) 1: Thorough washing
2: Animal fibre
3: Animal fibre
(A) 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 Chapter 3 Fibre to Fabric
- Types of fibres
- Sources of wool
- How to process wool fibre?
NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric
Students can utilise the NCERT Solutions for Class 7 for quick references to comprehend simple or complex topics of Class 7 Science with ease.
- Fibres – Fine, long filaments or continuous threads are acquired for animals and plants. There are 2 types of fibre. They are plant fibre and animal fibre.
- Silk – Silk and woollen are the usual fibres obtained from animals. Silk is obtained from the silkworms, whilst wool is obtained from the goat, sheep and yak. Therefore, wool and silk are animal fibres.
- Animal fibre – Hair of alpaca, llama and camel are handled and processed to produce the wool. Generally, in India, sheep are nurtured and reared to get wool. The hair of the sheep is shaved off from the body, cleansed, dried, sorted, coloured, gyrated and woven to get the wool.
- Sources of wool – Wool is acquired from yak (Ladakh and Tibet), Angora goat, sheep, goat, camel, Alpaca, etc.
This is a small introduction to NCERT Solutions for Class 7 Science Chapter 3. We, at BYJU’S, provide solutions for all the classes in a simple and easier way. BYJU’S provides solutions for all the classes and chapters; in brief, students can refer to Class 7 Science other chapters here. For more NCERT Solutions, study materials of all the subjects and all the classes, visit BYJU’S or download the app for more information and a better learning experience.
Frequently Asked Questions on NCERT Solutions for Class 7 Science Chapter 3
What are the important topics covered in Chapter 3 of NCERT Solutions for Class 7 Science?
2. Types of fibres
5. Sources of wool
6. How to process wool fibre?