Q: The rearing of silkworms for obtaining silk is called as:

Explanation: Pisciculture: Also known as fish farming, it is the rearing, breading, and transplantation of fishes. Sericulture: It is the rearing of silkworms in order to obtain silk from their pupa. Polyculture: It is the planting of two different crops in the same field at different times. It helps to replenish lost minerals. Arboriculture: It is the cultivation and management of trees, shrubs, perennial woods, etc.Hence, correct option is B.

Question 1

Which of the following is/ are correct statement(s)?

Accepted Answer

Both the statements are correct statements.Rearing of silk worms for obtaining silk is called sericulture.Sericulture is the whole process of obtaining  silk starting from silk moth.

Question 2

What is meant by the following terms?Rearing Shearing Sericulture

Accepted Answer

Rearing: The process of keeping, feeding, breeding, and medical care of useful animals is called the rearing of animals. These animals produce one or more useful products for human beings.Shearing: The process of removing the fleece of the sheep along with a thin layer of skin is called shearing.Sericulture: The rearing of silkworms for obtaining silk is called sericulture.

Question 3

Silk is obtained from ________ of the silk moth.

Accepted Answer

1. Cocoons are collected and kept under the sun, or boiled, or exposed to steam. This helps in separating out the silk fibers. The process by which silk thread is separated from the cocoon is called reeling the silk.2. Then, the spinning of silk fibers into threads is done.3. The silk threads obtained are woven into the desired clothes.

Question 4

The rearing of silkworms for obtaining silk is called as:

Accepted Answer

Explanation:&#10;&#10;Pisciculture: Also known as fish farming, it is the rearing, breading, and transplantation of fishes. &#10;&#10;Sericulture: It is the rearing of silkworms in order to obtain silk&#10;from their pupa.&#10;&#10;Polyculture: It is the planting of two different crops in the same&#10;field at different times. It helps to replenish lost minerals.&#10;&#10;Arboriculture: It is the cultivation and management of trees, shrubs,&#10;perennial woods, etc.Hence, correct option is B.

Question 5

Group of animals which gives wool are:

Accepted Answer

There are many animals that bear a thick coat of hair on their body which gives wool to us.For example sheep, goats, camel, yak, etc.Option $A$ is correct.

Question 6

Silk fibres are made up of:

Accepted Answer

Silk is a natural protein fiber, some forms of which can be woven into textiles. The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons.Thus, option $C$ is correct.

Question 7

State whether the following statements are true or false. If false, correct them.a) Silkworms are caterpillars of silk moths.b) In India, camels and goats are generally reared for obtaining wool.c) The rearing of silkworms for obtaining silk is called silviculture.d) In the process of obtaining wool from fleece, sorting is done after scouring.e) Yak hair is not used to make woollen fabric.

Accepted Answer

In the given statements: a) The given statement is true.b) The given statement is false. In India, sheep are reared for obtaining wool and not camels.c) The given statement is false. The rearing of silkworms for obtaining silk is called sericulture.d) The given statement is true.e) The given statement is false. Yak hairs are used to make woollen fabric.

Question 8

Silk fibre is obtained from the stem of a plant.

Accepted Answer

Silk fibres are obtained from saliva of the silkworms and not from the stem of a plant.

Question 9

Synthetic fibres are also called artificial or human-made fibres.

Accepted Answer

Synthetic fibres are prepared by using chemicals. These are made of small units that join together to form long chains. Some of the examples of synthetic fibres are nylon, rayon, acrylic, polyester.They are also called artificial or man-made or human-made fibre.Hence, option $A$ is correct.

Question 10

Explain the life cycle depicting the various stages of life of a silkmoth using a diagram.

Accepted Answer

Toppr Ask Answer