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The larva or caterpillar of Bombyx mori is also known as a silkworm. They feast on mulberry leaves until they are ready to cocoon themselves in thread. The tightly-packed fibres make the thread strong and resistant to breaking.

Picture: Silkworm, Credit: Getty Images

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Βι¶ΉΤΌΕΔ World Service Archive

This programme was restored as part of the World Service archive project