nandini

In the pupa stage, a weave is netted around by the silkworm to hold itself. After that it swings its head, spinning a fibre made of a protein and becomes a silk fibre. Several caterpillars form a protective layer around pupa and this covering is known as the cocoon.

Scientists in Japan have genetically modified silkworms to secrete the human protein collagen. In their cocoons, the insects produced both silk and collagen, which is used to generate artificial skin and cartilage and in cosmetic surgery to fill out lips and wrinkles.

Bombyx mori, the domestic silk moth, is an insect from the moth family Bombycidae. It is the closest relative of Bombyx mandarina, the wild silk moth. The silkworm is the larva or caterpillar of a silk moth. It is an economically important insect, being a primary producer of silk.

Internal Trade. Wholesale Trade. Retail Trade. External trade. Export Trade. Import Trade. Entrepot Trade

Trade is a basic economic concept involving the buying and selling of goods and services, with compensation paid by a buyer to a seller, or the exchange of goods or services between parties. Trade can take place within an economy between producers and consumers.

traveled is called the Silk Route. This map shows the ancient silk route. The land route passed through the Himalayas and the Hindukush. The sea route passed through the Arabian Sea and the Bay of Bengal

There are three types of international trade: Export Trade, Import Trade and Entrepot Trade.

From the literature of the period like Sangam poems and Sangam literature. From the objects like pottery, bowls and plates, found from several archaeological sites. From the Roman gold coins that have been found in south India.