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they spin it so they can become a butterfly and being a butterfly is their way of browing up in life
The butterfly's pupa stage is spent inside a cocoon
If The Cocoon Falls Down
First, the butterfly hatches as a worm. Then, the worm eats leaves to get fat, then it makes a cocoon. While in the cocoon, it transforms and goes through metamorphosis and soon emerges out of the cocoon as a butterfly.
A butterfly`s is called a chrysalis a moth`s is a cocoon.
Egg Caterpillar Cocoon Butterfly
No. Butterflies and Moths lay eggs. These eggs hatch out into caterpillars which eat plany material and grow. Once they are full size, the caterpillars make a cocoon/chrysalis then this cocoon/chrysalis hatches out into a new butterfly or moth. To be more clear, butterfly caterpillars do not make a cocoon; they pupate (transform into a chrysalis) which then hatches into the butterfly However, some moth caterpillers also spin a cocoon round themselves (made of silk) before pupating. Before pupating the caterpiller will normally move off its food source to find somewhere safe and hidden to pupate.
depends on the type of butterfly. I have painted butterflies and there cocoon is about 2 in. where as a monach butterfly is considerably bigger.
If you disturb a butterfly cocoon, it can kill the growing insect inside. It is important to leave the cocoon alone to let it develop naturally.
They lay eggs on Brassicas and their caterpillars will hatch and eat the leaves. Eventually, the caterpillar will spin a cocoon from inside which an adult butterfly will emerge.
butterfly
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