NCERT Solutions for Class 7 Science Chapter 3 – Fibre to Fabric. Furthermore, here we’ve provided you with the latest solution for Class 7 Science Chapter 3 – Fibre to Fabric. As a result here you’ll find solutions to all the exercises. This NCERT Class 7 solution will help you to score good marks in your exam.
Students can refer to our solution for NCERT Class 7 Science Chapter 3 – Fibre to Fabric. The Chapter 3 Solution of NCERT will help students prepare for the exams and easily crack the exam. Below we’ve provided you with the latest solution.
Answers to Questions On Page no. 32 of Ncert Class 7 Science Chapter 3 – Fibre to Fabric
Q1: You must be familiar with the following nursery rhymes:
- ‘Baa baa black sheep, have you any wool.’
- ‘Mary had a little lamb, whose fleece was white as snow.’
Answer the following:
- Which parts of the black sheep have wool?
- What is meant by the white fleece of the lamb?
Answer:
- Wool is obtained from the hairy fibres (hair) of the sheep.
- White fleece of the lamb refers to the white coloured hair of the lamb.
Q2: Choose the correct option.
The silkworm is (a) a caterpillar, (b) a larva.
(i) a
(ii) b
(iii) both a and b
(iv) neither a nor b
Answer:
(iii) both a and b
Q3: Which of the following does not yield wool?
(i) Yak
(ii) Camel
(iii) Goat
(iv) Woolly dog
Answer:
(iv) Woolly dog
Q4: What is meant by the following terms?
(i) Rearing (ii) Shearing (iii) Sericulture
Answer:
- Rearing: Rearing means helping someone to grow up.
- Shearing: It is the process of removal of fleece along with a thin layer of skin from the body of sheep.
- Sericulture: Sericulture refers to the rearing of silkworms to obtain silk.
Q5: Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them. Shearing, , sorting, , , .
Answer: Shearing, scouring , sorting, picking of burrs , dying of fibres , making of yarn
Q6: 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 silk moth directly related to silk production are
Q7: 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
Q8: Match the words of Column I with those given in Column II:
Answer :
| Column I | Column II (Answers) |
| Scouring | Cleaning sheared skin |
| Mulberry leaves | Food of silk worm |
| Yak | Wool yielding animal |
| Cocoon | Yields silk fibres |
Q9: 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
1: Thorough washing
2: Animal fibre
3: Long thread like structure
Across
1: Keeps warm
2: Its leaves are eaten by silkworms
3: Hatches from egg of moth
Answer:
NCERT Class 7 Science All Chapters Solution
Chapter 1: Nutrition In Plants
Chapter 2: Nutrition In Animals
Chapter 3: Fibre To Fabric
Chapter 4: Heat
Chapter 5: Acids Bases And Salts
Chapter 6: Physical And Chemical Changes
Chapter 7: Weather Climate
Chapter 8: Winds Storms And Cyclones
Chapter 9: Soil
Chapter 10: Respiration In Organisms
Chapter 11: Transportation in Animals and Plants
Chapter 12: Reproduction in Plants
Chapter 13: Motion And Time
Chapter 14: Electric Current And Its Effects
Chapter 15: Light
Chapter 16: Water A Precious Resource
Chapter 17: Forests Our Lifeline
Chapter 18: Wastewater Story