Moth is not a type of silk but it is a type of insect which is responsible for the production of silk fibre. Cocoon is formed at one of the life stages of silk moth through which we obtain silk fibres. Mulberry, Tassar, Mooga are different types of silk which are obtained from cocoons spun by different types of moths.
Answer : Moth is a type of insect which is responsible for production of silk fibre and not wool fibre.
Answer. Silk and wool are the animal fibre from the following.
Wool and silk are the animal fibres. 2. Silk is obtained from the fleece of sheep.
Cotton is called the KING OF FIBRES because it's almost pure cellulose, with softness and breathability that have made it the world's most popular natural fibre.
Animal fibers are natural fibers that consist largely of certain proteins. Examples include silk, hair/fur (including wool) and feathers. The animal fibers used most commonly both in the manufacturing world as well as by the hand spinners are wool from domestic sheep and silk.
Living_science Solutions for Class 7 Science Chapter 4 Animal Fibres are provided here with simple step-by-step explanations.
|Animal Fibres||Vegetable Fibres|
|They are made up of proteins.||They have the base of cellulose.|
|For example, wool and silk||For example, jute and cotton|
Which of the following is not a type of silk? Explanation: Mulberry silk, Tasar Silk and Mooga silk are the varieties of silk produced by different silkworms whereas Moth silk is not a variety of silk.
Since, acrylic resembles wool so it is also known as artificial wool or synthetic wool. Acrylic is cheaper than natural wool and can be dyed in various colour. Thus acrylic is very popular and taking the place of wool today. Acrylic is used in making sweaters, blanket, and other many clothes.
In India, camels and goat are generally reared for obtaining wool.
silk is the delicate string like subsatance that comes from small insects called silkworms. In order to gain silk from these insects they must be killed and their silkwinded up tight to make silk that is strong enough to make clothes. This is an expensive process and the silk worms are rare and hard to find.
Animal fibers are the second most widely used natural fibers after vegetable or plant fibers. They are generally comprised of proteins, and can be potential reinforcements in composites. Examples of this fiber include wool fiber obtained from sheep, goats, lamas, rabbits, musk oxen, etc.
Kosa silk is mainly derived from Antheraea mylitta, an Indian silkworm. It is a special type of tussar silk that is drawn out of the cocoons grown on trees like Saja, Sal and Arjun. This preferred pure silk is mostly grown in Chattisgarh. The silk is widely popular owing to its sturdiness, purity and soft texture.
C) Polyester: Polyester is a completely synthetic fibre that is produced in a variety of industries using a variety of chemicals. Furthermore, polyester is not a natural animal fibre.
The strongest fibre is called Rayon.
Rayon is used in the manufacture of hard and tensile ropes. Now Rayon is made from wood.
In 1877, Benjamin Disraeli, Conservative Prime Minister, had Queen Victoria proclaimed as Empress of India. India was already under crown control after 1858, but this title was a gesture to link the monarchy with the empire further and bind India more closely to Britain.
Dated : 10-Jun-2022
Category : Education