NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric

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NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric are provided in this article. The important topics that are included in this chapter are:

Wool
Silk

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NCERT Solutions for Class 7 Science Chapter 3

NCERT Solutions for Class 7 Science Chapter 3 Fibre to Fabric are given below:

NCERT Solution

Class 7 Science Chapter 3 Fibre to Fabric: Important Topics

Fibres are thin, long, flexible, and hair or thread-like structures. The fibres are usually obtained from two main sources- Plants and Animals. These fibers are called Natural Fibres. Cotton, wool, and silk are examples of Natural Fibres.

Wool

Wool is referred to as the textile fibre obtained from sheep and other animals, which includes cashmere and mohair from goats, qiviut from muskoxen, hide and fur clothing from bison, angora from rabbits, and other types of wool from camelids.

Silk

Silk is a natural protein fibre, some forms of which can be woven into textiles. The protein fibre of silk is formed mainly of fibroin, which is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity.

Chapter Related Links:

MCQs on fibre to fabric	MCQs on animal kingdom	Variety in Fabrics
Yarn to Fabric	History of Clothing Material	Animal Fibre
Silkworm	Spinning of cotton yarn	Synthetic Fibre
Fibrous Materials Uses	Jute	Plant Fibers

Class 7 Science Additional Resources:

CBSE Class 7 Science NCERT Textbook	CBSE Class 7 Science Sample Paper	NCERT Solutions

CBSE X Related Questions

1.
Draw a neat diagram to show germination of pollen on the female reproductive part of the flower. Name and label only the following parts:
(a) The part that receives the pollen grain.
(b) The structure that carries the male germ cell to reach the female germ cell.
View Solution
2.
From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
(i) Growth of pollen tube towards ovule.
(ii) Movement of sunflower towards sunlight.
(iii) Movement of root towards Earth/Gravity.
(iv) Movement of leaves due to breeze.
- (i) and (iii) respectively
- (iii) and (i) respectively
- (i), (ii) and (iii), (iv) respectively
- (i), (iii) and (ii), (iv) respectively
View Solution
3.
Plants use variety of techniques to get rid of their waste materials. Some are mentioned below. Identify the incorrect one:
- Excess water is given out by transpiration.
- Gums and Resins are wastes that are stored.
- Roots secrete some wastes into the soil.
- Flowers can store some waste products.
View Solution
4.
What is the function of diaphragm in human respiratory system ? Where is it present in human body ?
View Solution
5.
Given below is a pyramid showing various trophic levels in an ecosystem:
(a) From the organisms listed below, identify which one is to be placed at which trophic level:
Deer, Grass, Lion, Snake, Rabbit
(b) Discuss the reason why primary consumers will have more energy as compared to secondary consumers?
(c) Why is the base of the pyramid broad?
View Solution
6.
The natural sources of oxalic acid, lactic acid and methanoic acid respectively are:
- tomato, curd, ant-sting
- tomato, orange, nettle-sting
- orange, milk, ant-sting
- orange, sour milk, nettle-sting
View Solution

View All

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NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric

NCERT Solutions for Class 7 Science Chapter 3

Class 7 Science Chapter 3 Fibre to Fabric: Important Topics

Wool

Silk

CBSE X Related Questions

1.
Draw a neat diagram to show germination of pollen on the female reproductive part of the flower. Name and label only the following parts:
(a) The part that receives the pollen grain.
(b) The structure that carries the male germ cell to reach the female germ cell.

2.
From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
(i) Growth of pollen tube towards ovule.
(ii) Movement of sunflower towards sunlight.
(iii) Movement of root towards Earth/Gravity.
(iv) Movement of leaves due to breeze.

3.
Plants use variety of techniques to get rid of their waste materials. Some are mentioned below. Identify the incorrect one:

4.
What is the function of diaphragm in human respiratory system ? Where is it present in human body ?

6.
The natural sources of oxalic acid, lactic acid and methanoic acid respectively are:

Comments

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NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric

NCERT Solutions for Class 7 Science Chapter 3

Class 7 Science Chapter 3 Fibre to Fabric: Important Topics

Wool

Silk

CBSE X Related Questions

1.Draw a neat diagram to show germination of pollen on the female reproductive part of the flower. Name and label only the following parts: (a) The part that receives the pollen grain. (b) The structure that carries the male germ cell to reach the female germ cell.

2.From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively: (i) Growth of pollen tube towards ovule. (ii) Movement of sunflower towards sunlight. (iii) Movement of root towards Earth/Gravity. (iv) Movement of leaves due to breeze.

3.Plants use variety of techniques to get rid of their waste materials. Some are mentioned below. Identify the incorrect one:

4.What is the function of diaphragm in human respiratory system ? Where is it present in human body ?

6.The natural sources of oxalic acid, lactic acid and methanoic acid respectively are:

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Draw a neat diagram to show germination of pollen on the female reproductive part of the flower. Name and label only the following parts:
(a) The part that receives the pollen grain.
(b) The structure that carries the male germ cell to reach the female germ cell.

2.
From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively:
(i) Growth of pollen tube towards ovule.
(ii) Movement of sunflower towards sunlight.
(iii) Movement of root towards Earth/Gravity.
(iv) Movement of leaves due to breeze.

3.
Plants use variety of techniques to get rid of their waste materials. Some are mentioned below. Identify the incorrect one:

4.
What is the function of diaphragm in human respiratory system ? Where is it present in human body ?

6.
The natural sources of oxalic acid, lactic acid and methanoic acid respectively are: