Band 9: 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 depict the life cycle of the silkworm and the stages involved in the manufacture of silk cloth.

Overall, the silkworm undergoes a cyclical process consisting of four biological stages, whereas the production of silk cloth is a linear process that involves several industrial steps, from selecting cocoons to weaving the final fabric.

At the first stage, adult moths lay eggs, which hatch after approximately ten days into silkworm larvae. These larvae feed exclusively on mulberry leaves and continue growing for around four to six weeks. Once fully developed, they produce silk threads and spin cocoons within a period of three to eight days. Inside the cocoon, the larva transforms, and after about sixteen days, a moth emerges, thus completing the life cycle.

In contrast, silk cloth production begins with the careful selection of cocoons. They are then boiled in water to loosen the fibres, after which the silk threads, ranging from 300 to 900 metres in length, are unwound. The threads are subsequently twisted and woven into cloth. Dyeing may occur either during the thread stage or after the fabric has been woven.