The given diagrams describe how a moth egg transform into an adult silkworm and the process of the production of silk cloth.
Overall, the life cycle of silkworm consists of a serie of changes including a period of time developping inside a cocon. In regard to producing silk cloth, 4 stages are needed from the selection of silk thread shells to the final step of coloring.
Life begins with a egg, which is laid on a leaf, then the silkworm larva takes 10 days to hatch and come out of the egg. During 4 to 6 weeks, silkworm larva grows up eating mulberry leaves, and starts producing silk thread to make its shell, which is transformed within 3 to 8 days into a cocon where the larva remain developping for exactely 16 days. At the end of this stage the larva transforms into an adult moth and the life cycle starts again.
when it comes to producing silk cloth, the selected silk thread is put onto a large container to boil with water, then 300 to 900 meters of thread is unwinded before being twisted. At the final stage of the process, threads are colored and weaved.
The
given
diagrams
describe
how a moth egg transform into an adult silkworm and the process of the production of
silk
cloth.
Overall
, the life cycle of silkworm consists of a
serie
of
changes
including a period of time
developping
inside a
cocon
. In regard to producing
silk
cloth, 4 stages
are needed
from the selection of
silk
thread
shells to the final step of coloring.
Life
begins
with
a
egg, which
is laid
on a leaf, then the silkworm larva takes 10 days to hatch and
come
out of the egg. During 4 to 6 weeks, silkworm larva grows up eating mulberry
leaves
, and
starts
producing
silk
thread
to
make
its shell, which
is transformed
within 3 to 8 days into a
cocon
where the larva remain
developping
for
exactely
16 days. At the
end
of this stage the larva transforms into an adult moth and the life cycle
starts
again.
when
it
comes
to producing
silk
cloth, the selected
silk
thread
is put
onto a large container to boil with water, then 300 to 900 meters of
thread
is
unwinded
before
being twisted
. At the final stage of the process, threads
are colored
and weaved.