NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric

 

NCERT solutions for class 7 science chapter 3 Fibre to FabricFibre that are obtained from plants like cotton, jute etc are discussed in NCERT class 6. Fibres are also obtained from animals like sheep, yak etc. The solutions of NCERT class 7 science chapter 3 fibre to fabric have explanations to the questions related to wool which is obtained from sheep and silk which is obtained from silkmoth. Class 7 science chapter fibre to fabric explains the step-wise process of getting wool from sheep and silk from the cocoon. At the end of the chapter, exercise questions are given. The CBSE NCERT solutions for class 7 science chapter 3 fibre to fabric discuss all these questions. The solutions of NCERT covers all the questions of the NCERT science chapters and are helpful for exam preparation for other classes as well. The NCERT solutions for class 7 science chapter 3 fibre to fabric covers questions from all the topics of this chapter.

Here are the important topics of NCERT Class 7 Science Chapter 3:

3.1 Wool

    Animals that yield wool

    From fibres to wool

    Processing fibres into wool

    Life history of Silkmoth

3.2 Silk

    From cocoon to silk

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.

Answer:

The female silk moth lays eggs, from which hatch larvae which are called caterpillars or silkworms

Hence correct option: (iii) both a and b

4. What is meant by the following terms?

(i) Rearing

Answer:

Rearing means helping animals to grow includes grazing, feeding or breeding for some profit or other pleasure. It also helps animals from the problems of itching, odour, and waste.

4. What is meant by the following terms?

(ii) Shearing

Answer:

The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing.

4. What is meant by the following terms?

(iii) Sericulture

Answer:

The rearing of silkworms for obtaining the spinned silk is called sericulture.

 

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

Shearing, __________, sorting, __________, __________, _________.

Answer:

The complete steps for the processing of the wool.

Shearing, scouring, sorting, cleaning of burrs, dyeing, 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.

Answer:

The two stages in the life history of the silk moth which are directly related to the production of silk are:

Silkworm and cocoon

 

 

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 cultivation of mulberry leaves and rearing silkworms.

(ii) Scientific name of mulberry is Morus alba.

Answer:

Sericulture and moriculture are related to silk production.

Sericulture: Rearing of silkworms to obtain silk. 

Moriculture: The science of cultivation of mulberry leaves for silk production.

Therefore, the silk industry is dependent on sericulture which in turn is dependent on moriculture. Hence, both are related to silk production.

 

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.

   Down                                        Across

(D) 1: Thorough washing      (A) 1: Keeps warm

2: Animal fibre                            2: Its leaves are eaten by silkworms

3: Long thread like structure      3: Hatches from egg of moth.

 

 

Answer:

Down Across
1. SCOUR 1. WOOL
2. SILK 2. MULBERRY
3. FIBRE 3. CATERPILLAR

 

Chapterwise NCERT solutions of class 7 science

Chapter No.

Chapter Name

Chapter 1  

NCERT solutions for class 7 science chapter 1 Nutrition in Plants

Chapter 2

Solutions of NCERT class 7 science chapter 2 Nutrition in Animals

Chapter 3

CBSE NCERT solutions for class 7 science chapter 3 Fibre to Fabric

Chapter 4

NCERT solutions for class 7 science chapter 4 Heat

Chapter 5

Solutions of NCERT class 7 science chapter 5 Acids Bases and Salts

Chapter 6

CBSE NCERT solutions for class 7 science chapter 6 Physical and Chemical Changes

Chapter 7

NCERT solutions for class 7 science chapter 7 Weather Climate and Adaptations of Animals to Climate

Chapter 8

Solutions of NCERT class 7 science chapter 8 Winds storms and cyclones

Chapter 9

CBSE NCERT solutions for class 7 science chapter 9 Soil

Chapter 10

NCERT solutions for class 7 science chapter 10 Respiration in Organisms

Chapter 11

Solutions of NCERT class 7 science chapter 11 Transportation in Animals and Plants

Chapter 12

CBSE NCERT solutions for class 7 science chapter 12 Reproduction in Plants

Chapter 13

NCERT solutions for class 7 science chapter 13 Motion and Time

Chapter 14

Solutions of NCERT class 7 science chapter 14 Electric Current and its Effects

Chapter 15

CBSE NCERT solutions for class 7 science chapter 15 Light

Chapter 16

NCERT solutions for class 7 science chapter 16 Water A Precious Resource

Chapter 17     Solutions of NCERT class 7 science chapter 17 Forests Our Lifeline

Chapter 18

CBSE NCERT solutions for class 7 science chapter 18 Wastewater Story

NCERT Solutions for Class 7 Subject Wise

NCERT Solutions for Class 7 Maths

CBSE NCERT Solutions for Class 7 Science

 Benefits of NCERT solutions for class 7 science chapter 3 fibre to fabric:

  • Solving homework questions are easy with the CBSE NCERT solutions for class 7 science chapter 3 fibre to fabric in hand.
  • Going through the solutions of NCERT class 7 science chapter 3 fibre to fabric give clarity of the concepts studied in the chapter. 
 

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