With reference to the extraction of fibres, consider the following statements: 1. Cotton fibres are picked from the stem of the plant. 2. Jute fibres are separated from the stem by hand after rotting. 3. Wool is obtained by ginning the fleece. Which of the statements given above is/are correct?

The correct option is (b). Explanation Natural fibres are biopolymers obtained from specific parts of plants (cellulose-based) or animals (protein-based). The method of extraction depends on the biological source and location of the fibre within the organism. Statement-wise Analysis: - Statement 1 is Incorrect. Cotton fibres are not picked from the stem. They are obtained from the fruit of the cotton plant, known as cotton bolls. When the bolls mature, they burst open to reveal the soft fibres. - Statement 2 is Correct. Jute fibres are extracted from the stem of the jute plant. The harvested stems are submerged in water for a few days to rot the tissues and loosen the fibres, a process known as retting. The fibres are then separated from the stem by hand. - Statement 3 is Incorrect. Wool is obtained by removing the fleece (hair) from animals like sheep, goats, or yaks through a process called shearing. Ginning is the process used to separate cotton fibres from their seeds. Key Takeaway: Cotton is obtained from the fruit (bolls) and processed via ginning. Jute is obtained from the stem via retting. Wool is obtained from animal fleece via shearing.

With reference to the extraction of fibres,… - NCERT Class 6 Science MCQ

NCERT Class 6 Science — Chapter 1: Fibre to fabric

mcqmedium

With reference to the extraction of fibres, consider the following statements:

Cotton fibres are picked from the stem of the plant.
Jute fibres are separated from the stem by hand after rotting.
Wool is obtained by ginning the fleece.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 6 · Page 20

Options

A1 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (b).

Explanation

Natural fibres are biopolymers obtained from specific parts of plants (cellulose-based) or animals (protein-based). The method of extraction depends on the biological source and location of the fibre within the organism.

Statement-wise Analysis:

Statement 1 is Incorrect. Cotton fibres are not picked from the stem. They are obtained from the fruit of the cotton plant, known as cotton bolls. When the bolls mature, they burst open to reveal the soft fibres.
Statement 2 is Correct. Jute fibres are extracted from the stem of the jute plant. The harvested stems are submerged in water for a few days to rot the tissues and loosen the fibres, a process known as retting. The fibres are then separated from the stem by hand.
Statement 3 is Incorrect. Wool is obtained by removing the fleece (hair) from animals like sheep, goats, or yaks through a process called shearing. Ginning is the process used to separate cotton fibres from their seeds.

Key Takeaway:
Cotton is obtained from the fruit (bolls) and processed via ginning. Jute is obtained from the stem via retting. Wool is obtained from animal fleece via shearing.

Your note

More from Chapter 1: Fibre to fabric

With reference to the cotton boll, consider the following statements: 1. It is the root of the cotton plant. 2. It bursts open upon maturing. 3. It contains seeds covered with silk fibres. Which of the statements given above is/are correct?

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With reference to devices used for spinning, consider the following statements: 1. A takli is a power-operated device used for spinning. 2. The charkha was popularised by Mahatma Gandhi to promote homespun cloth. 3. Spinning of yarn on a large scale is done with the help of spinning machines. Which of the statements given above is/are correct?

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The process of separating cotton fibres from seeds by combing is technically referred to as:

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With reference to Flax, consider the following statements: 1. Flax is a plant that yields synthetic fibres. 2. In ancient Egypt, it was cultivated near the river Nile. 3. It was used for making fabrics in ancient times. Which of the statements given above is/are correct?

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Consider the following statements regarding the process of Weaving: 1. It involves arranging a single yarn to make a fabric. 2. Weaving of fabric is done on looms. 3. Looms are exclusively hand-operated devices and cannot be power-operated. Which of the statements given above is/are correct?

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