NCERT Solutions for Class 7 Science Chapter 3 Fiber To Fabric
Learn from School Connect Online in this chapter we will learn about Fibres which are very thin, thread-like strands from which fabrics (or cloths) are made. Some examples of fibres are cotton, wool, silk, flax, jute, nylon, polyester and polyacrylic. NCERT Solutions for Class 7 Science Chapter 3 Fiber To Fabric
Download PDF of NCERT Solutions for Class 7 Science
|NCERT Solutions Download Class 7||Chapter Name||NCERT Solutions Download Class 7||Chapter Name|
|NCERT Solutions For Class 7 Science Chapter 1: Nutrition In Plants||Nutrition in Plants||NCERT Solutions for Class 7 Chapter 10 Respiration in Organisms||Respiration in Organisms|
|NCERT Solutions for Class 7 Chapter 2 Nutrition in Animals||Nutrition in Animals||NCERT Solutions for Class 7 Chapter 11 Transportation in Animals and Plants||Transportation in Animals and Plants|
|NCERT Solutions for Class 7 Chapter 3 Fibre to Fabric||Fibre to Fabric||NCERT Solutions for Class 7 Chapter 12 Transportation in Animals and Plants||Reproduction in Plants|
|NCERT Solutions for Class 7 Chapter 4 Heat||Heat||NCERT Solutions for Class 7 Chapter 13 Motion and Times||Motion and Times|
|NCERT Solutions for Class 7 Chapter 5 Acids,Bases and Salts||Acids,Bases and Salts||NCERT Solutions for Class 7 Chapter 14 Electric Current and its Effects||Electric Current and its Effects|
|NCERT Solutions for Class 7 Chapter 6 Physical and Chemical Changes||Physical and Chemical Changes||NCERT Solutions for Class 7 Chapter 15 Light||Light|
|NCERT Solutions for Class 7 Chapter 7||Weather,Climate and Adaptations of Animals to Climate||NCERT Solutions for Class 7 Chapter 16 Water;A precious resource||Water;A precious resource|
|NCERT Solutions for Class 7 Chapter 8||Winds Storms and Cyclones||NCERT Solutions for Class 7 Chapter 17 Forests;Our life line||Forests;Our life line|
|NCERT Solutions for Class 7 Chapter 9||Soil||NCERT Solutions for Class 7 Chapter 18 Waste water story||Waste water story|
NCERT SOLUTIONS Chapter 3 Fiber 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 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 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 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 egg of moth
CBSE Notes for Class 7 Science Free Download for All Chapters
|CBSE Class 7 Science Study Notes||CBSE Class 7 Science Study Notes|
|Nutrition in Plants Class 7 Notes Chapter 1||Respiration in Organisms Class 7 Notes Chapter 10|
|Nutrition in Animals Class 7 Notes Chapter 2||Transportation in Animals and Plants Class 7 Notes Chapter 11|
|Fibre to Fabric Class 7 Notes Chapter 3||Reproduction in Plants Class 7 Notes Chapter 12|
|Heat Class 7 Notes Chapter 4||Motion and Times Class 7 Notes Chapter 13|
|Acids,Bases and Salts Class 7 Notes Chapter 5||Electric Current and its Effects Class 7 Notes Chapter 14|
|Physical and Chemical Changes Class 7 Notes Chapter 6||Light Class 7 Notes Chapter 15|
|Weather,Climate and Adaptations of Animals to Climate Class 7 Notes Chapter 7||Water;A precious resource Class 7 Notes Chapter 16|
|Winds Storms and Cyclones Class 7 Notes Chapter 8||Forests;Our life line Class 7 Notes Chapter 17|
|Soil Class 7 Notes Chapter 9||Waste water story Class 7 Notes Chapter 18|
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