Question

1.What do you mean by reading of animals ?

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2. What is pashmina?

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3. Define the term scouring.
What are burrs?

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4 what is burrs?

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5. Explain the reeling of silk.

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6. What is the most common silk moth?

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Short Answer Type Questions

1. What is meant by 'selective breeding'?

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2. Explain the feeding of sheep ?

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3. What kind of animals are reared to obtain wool ?

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4. What is the role of woman in silk production ?

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5. What is sorter's disease ?

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6. Write a short note on discovery of silk.

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7. Draw a labelled diagram to show the life cycle of a silk-moth.

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Answer 1

1.The rearing of animals is defined as animals raised or bred for their use, or for pleasure or for profit, often for food. These activities have associated common problems of odor and elimination of animal waste.

2.Pashmina refers to a fine variant of spun cashmere, the animal-hair fibre forming the downy undercoat of the Changthangi goat. The word pashm means "wool" in Persian, but in Kashmir, pashm referred to the raw unspun wool of domesticated Changthangi goats.

3.It means clean or brighten the surface of (something) by rubbing it hard, typically with an abrasive or detergent.

Answer 2

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Very Short Answer Type Questions

1 The rearing of animals is defined as animals raised or bred for their use, or for pleasure or for profit, often for food

2 The word pashm means "wool" in Persian, but in Kashmir, pashm referred to the raw unspun wool of domesticated Changthangi goats.

3 Scouring is the process of preparing and washing a batch of raw sheep's wool to remove impurities such as grease, dirt and suint.

4 A bur is a seed or dry fruit or infructescence that has hooks or teeth.

5 Silk reeling is the process by which a number of cocoon baves are reeled together to produce a single thread.

6 The most common silk moth is mulberry silk moth and its silk fibres are soft, lustrous, and elastic and can be dyed in beautiful colors.

Short Answer Type Questions

1 Selective breeding involves choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics. Humans have selectively bred plants and animals for thousands of years including: crop plants with better yields.

2 Sheep and lamb feeds provide animals with the protein, carbohydrates, fiber, vitamins, and minerals they need. When a sheep eats forage, it means the animal grazes on grass in a pasture or field or eats some kind of preserved forage such as hay, silage, or haylage.

3 Other than sheep, wool can be obtained from the animals like camels, goats and rabbits. The Alpaca, a camel breed, gives fibres which are light weight, soft and shiny in nature. The Cashmere goat gives soft and warm fibre which is called Cashmere fibre.

4 No wonder women are playing a very important role in the sericulture industry. Their qualities like maternal instincts and loving care of those under their charge prove to be very helpful in the successful breeding of silk worms.

5 Sorter's Disease is another name for Anthrax. It is caused by the bacteria Bacillus anthracis. Historically, anthrax was called wool sorter's disease because individuals who sorted wool of infected animals contracted the disease.

6 According to Chinese legend, silk was discovered in 2640 BC by the third wife of China's third Emperor. While she was having tea underneath a mulberry tree in the garden, a small cocoon fell from the tree into her cup of hot tea. She was surprised to see the cocoon start to unravel, revealing a long delicate thread.

7 Silk moth shows complete metamorphosis that consists of four stages.

• It begins with the insect hatching from an egg into a soft worm-like larva.
• Larvae have a very big appetite and they feed on mulberry leaves.
• They can eat several times their own body weight to store food.
• At the end of the larval stage, the insect makes a hard shell called cocoon, inside which it becomes a pupa.
• The pupa does not eat or move in this stage.
• Silk is obtained from the cocoon.
• Inside the cocoon, the pupa changes into an adult silk moth.
• This adult silk moth can now live independently.

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