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The diagrams below show the life cycle of the silkworm and the stages in the production of silk cloth.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

» Write at least 150 words.


The diagrams illustrate various stages in development of the silkworm during its life cycle and how silk cloth is made.

Overall, life cycle of the silkworm involves 5 main stages, which is the same as the number of steps for manufacturing silk cloth. Another interesting point is that there are two separate processes: one is natural; the other is industrial.

In the initial stage of silkworm’s life cycle, adult moths lay their eggs on leaves. After experiencing ten-day hatching process, silkworm larvae emerge and they feed on mulberry leaves. Four to six days later, they become silk threads with their head appearing, which is followed by becoming cocoons over 3-8 days. It takes about half of month for them to pass through a significant change in their appearance, with developing wings and turning into fully-grown moth. Subsequently, they begin to breed and the process repeats.

In terms of silk cloth manufacturing, the first step of this process is selecting a suitable cocoon, which is put into boiled water. After this stage, the material is unwound. These threads can be stretched out up to 300-900m and after that they are twisted together. Finally, the resulting threads can either be dyed and then woven into silk fabric, or it can be woven first and then dyed subsequently.

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