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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

What are the two types of fibres that are obtained from animals? - Science

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प्रश्न

What are the two types of fibres that are obtained from animals?

टीपा लिहा

उत्तर

  1. Wool – silk fibre is obtained from the cocoon of silkworm.
  2. Wool is got from fleece of sheep or goat
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Animal Fibres: Wool
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पाठ 5: Animals in Daily Life - Evaluation [पृष्ठ ९१]

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सामाचीर कलवी Science - Term 3 [English] Class 7 TN Board
पाठ 5 Animals in Daily Life
Evaluation | Q VI. 2. | पृष्ठ ९१

संबंधित प्रश्‍न

You must be familiar with the following nursery rhymes:

Mary had a little lamb, whose fleece was white as snow

Answer the following:

What is meant by the white fleece of the lamb?


Which of the following does not yield wool?


What is meant by term Rearing?


What is meant by term Shearing ?


What is meant by term Sericulture?


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

Shearing, __________, sorting, ______________________________


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

(D) 1: Thorough washing

2 : Animal fibre

3 : Long thread like structure

Across

(A) 1 : Keeps warm

2 : Its leaves are eaten by silkworms

3 : Hatches from egg of moth


True or False – If False give the correct answer

Wool is the fibre derived from the silk worm.


What is shearing?


What are the characteristics of wool? Give any three.


Write the uses of the wool.


Wool yielding animals bear _________ on their body.


State whether the following statements are True or False. If false, correct them.

In the process of obtaining wool from fleece, sorting is done after scouring.


How does the hair of certain animals help in keeping their bodies warm?


Various steps involved to obtain wool from fleece are given here.

  1. Picking out the burrs
  2. Dyeing in various colours
  3. Shearing
  4. Scouring
  5. Sorting

Write the above steps in the correct sequence in which they are carried out.


A wholesale woollen fibre dealer gets the woollen fibre of different textures sorted for various purposes. Match the items in Column I with the woollen fibre in Column II.

Column I Column II
(a) Pashmina shawl (i) Camel wool
(b) Woollen carpet (ii) Angora wool
(c) Baby blanket (iii) Kashmir goat
(d)  Woollen sweater (iv)  Sheep wool

On burning wool, why we get the small of burning of hair?


The scouting process during the processing of wool refers to ______.


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