What is the life history of silkworm?

The life cycle of a silkworm comprises 4 stages. They are eggs, caterpillars, cocoons, and adult moths.

What is the conclusion on sericulture?

Sericulture production was significant for the development of the human civilization from different aspects. Clothing is a very essential component for human shelter. Since the very early stage of human civilization, one of the reasons why clothes were often worn by people was to upgrade their social status.

Which stage of the life history of silk moth is important to obtain silk?

The pupal stage is found only in holometabolous insects, those that undergo a complete metamorphosis, going through four life stages: embryo, larva, pupa and imago. During the pupal stage, only in the case of Bombyx mori, they produce silk.

What were silkworms used for?

Silkworms are generally reared for the primary purpose of extracting their Silk, however they have many uses and are also used as food – both for animal and human consumption – and research. Silk isn’t called the queen of all textile for nothing! Silk is elegant, soft and durable.

How long is the life cycle of a silkworm?

about 6-8 weeks
Life cycle of silkworm The overall life cycle of the silkworm is about 6-8 weeks.

What is the importance of sericulture?

Sericulture provides gainful employment, economic development and improvement in the quality of life to the people in rural area and therefore it plays an important role in anti poverty programme and prevents migration of rural people to urban area in search of employment.

What is sericulture PDF?

Sericulture is the production of raw silk by raising silk worms. The productivity. and profitability of sericulture depends on the yield of mulberry crop. It is a cottage industry. combining agriculture and industry.

Which of the following stages in the life history of a silk produced silk fibres?

In pupa stage the silk fiber is only obtained, but actually it is produced by larva and in question it is asked which stage produces fiber. Hence, the answer is ‘C”.

Why are silkworms economically important?

Silkworm have a large role in rural life in many countries being an insect of economic importance. Silkworm produces silk as high quality fiber and silk fabrics are highly attractive. There are different lines and strains for silk production.

Why silkworms are beneficial to human?

Silkworm pupae are a good source of protein, lipids, minerals, and vitamins and are considered a good source of nutrients for humans. Silkworm pupae are a valuable insect source of substances used in healthcare products, medicines, food additives, and animal feed.

How do silk worms help humans?

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.

What is the origin of the silkworm?

The most common tale on the origins of the Silkworm begins in 2640 B.C. when Si-Ling-Chi, a Chinese Empress was simply walking through her garden, when a ‘cocoon’ (of a Silkworm) dropped into her tea. Upon picking it up, she found the cocoon begun to unravel, forming a beautiful string of what is now known as ‘Silk’.

What is the life cycle of silkworm?

Time span of the life cycle of silkworms ranges from 6 to 8 weeks. At a time, the female silk moth lays about 300 to 400 eggs. The caterpillars or silkworms come out as the eggs hatch. This stage is known as the larval stage.

Why are silkworms so dependent on humans?

Those sugars are toxic to other caterpillars and herbivores; silkworms have evolved to tolerate those toxins. Silkworms are today completely dependent on humans for survival, a direct result of artificial selection.

Who is the author of the silkworm?

K. Kris Hirst is an archaeologist with 30 years of field experience. She is the author of The Archaeologist’s Book of Quotations and her work has appeared in Science and Archaeology. Silkworms (incorrectly spelled silk worms) are the larval form of the domesticated silk moth, Bombyx mori.