Silk is made by the silkworm.
really worms at all, but caterpillars. Like other
caterpillars, a silkworm spins a cocoon for
shelter while it changes into a moth. Silkworms
produce the silk thread from specialized silk
glands. The entire cocoon is made from one
single,unbroken thread. The thread of a single
cocoon can be over 3000 ft long,and it takes 3000
cocoons to make a pound of silk cloth.
Chinese learned to cultivate silk worms and make
silk clothing over5000 years ago. The caterpillars
must be fed only leaves from the mulberrytree to
survive. After the cocoons are spun, they are
boiled in water. As they cocoon loosens, the end
of the thread is found and the silk gently pulled
from the water. Today silkworms only occur in
captivity, and the adults have lost their ability
to fly or survive in the wild.
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