Students can Download Science Chapter 3 Fibre to Fabric Questions and Answers, Notes Pdf, KSEEB Solutions for Class 7 Science helps you to revise the complete Karnataka State Board Syllabus and to clear all their doubts, score well in final exams.
Karnataka State Syllabus Class 7 Science Chapter 3 Fibre to Fabric
Class 7 Science Fibre to Fabric Textbook Exercise Questions and Answers
Question 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 the show’.
(a) Which parts of the black sheep have wool?
Answer:
The hair of the sheep provides wool.
(b) What is meant by the white fleece of the lamb?
Answer:
It is the white-colored hair of the lamb.
Question 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:
(iii) both a and b
Question 3.
Which of the following does not yield wool?
(a) Yak
(b) Camel
(c) Goat
(d) Woolly dog
Answer:
(d) Woolly dog.
Question 4.
What is meant by the following terms?
Answer:
(a) Rearing: The breeding and management of usual domestic animal is called rearing.
(b) Shearing: Shearing is the process of removing fleece of the sheep along with a thin layer of skin from its body.
(c) Sericulture: The process of rearing silkworms for obtaining silk is called sericulture.
Question 5.
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, removal of bun’s, dyeing, combing and spinning.
Question 6.
Make sketches of two stages in the life history of the silk moth which are directly related to the production of silk.
Answer:
Question 7.
Out of the following, which are the two terms related to silk production?
sericulture, floriculture, mariculture, apiculture and silviculture.
Answer:
Sericulture and mariculture.
Question 8.
Match the words of Column I with those given in column II.
| Column I | Column II |
| (a) Scouring | (i) Yields silk fibers |
| (b) Mulberry leaves | (ii) Wool yielding animal |
| (c) Yak | (iii) Food of silkworm |
| (d) Cocoon | (iv) Reeling |
| (v) Cleaning sheared skin |
Answer:
(a)-(v);
(b)-(iii);
(c)-(ii);
(d)-(iv).
Question 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:
- Thorough washing
- Animal fiber
- Long thread-like structure
Across:
- Keeps warm
- Its leaves are eaten by silkworms
- Hatches from egg of moth.
Answer:
