Silk is the long thread in which silkworm..............
itself when it spins its..............
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They are given mulberry leaves, which they greedily devour. After shedding their skin four times, the fully-grown silkworms reach a length of 9 cm and a weight of 4 grams. After 33 days, each silkworm starts spinning a cocoon around itself. From its spinning gland, it secretes a thin silk thread (fibroin).
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