Summarise the information by selecting and reporting the main features and make comparisons where relevant.
It takes a total of 16 days for a moth to emerge from a cocoon and the life cycle of the silkworm involves four stages. Initially a moth lays its eggs on a leaf. 10 days later, these become silkworm larva which feed on mulberry leaves. The larva spins a cocoon of silk thread in 4-6 weeks. The final stage comes to an end 3-8 days later with the complete cocoon.
In order to produce cloth, cocoons are selected then boiled in water. The thread, which reaches lengths of between 300 to 900m, is unwound then twisted. The thread is either dyed directly or woven and then the cloth is dyed.
All in all, the production of silk is a time consuming process involving two separate procedures. The natural procedure which lasts for up to 16 days follows the life cycle of the silkworm. Then there is human intervention which requires another 5 steps before the cloth is ready.
Cambridge, Ielts 6 past papers, p.75.
You described the diagrams incorrectly, because a moth cannot become a cocoon. And at the last stage(from 3 to 4) the larva leaves the silk thread and in 16 days becomes a moth. Silk which is left by larva is called cocoon.
ReplyDeleteThank you for your comment. You are correct! Human/typing error!
ReplyDelete