How do caterpillars know when to turn into a chrysalis?

Answer 1

The whole process of metamorphosis is controlled by hormones secreted by the larva. Inside the cocoon the butterfly's organs and other structures are dis-assembled and completely re-modeled.

The butterfly is a very delicet creature and the bones and organs has to be re-modeled.

Answer 2

Caterpillars will hang upside down and they have saved all of there food to make the chrysalis so they start spinning then at the end a part of there body will pop or fall of. Some caterpillars may fall on the ground but that is fine they are unharmed.

McKenna Griffin Age:10 Larinburgh, North Carolina

Answer 3

Caterpillars know when to turn into a chrysalis due to having a chemical hormone. When this chemical level is high, their brain tells them it is time to move onto the next stage of their life.

Answer 4

1. a butterfly lays eggs on a leaf

2. the eggs hatch

3. out comes little larvae

4. the larvae eat and eat and eat

5. the larvae gets a little bigger and is then called a caterpillar

6. the caterpillar eats and eats and eats some more

7. the caterpillar makes a pupa-- or chrysalis

8. the caterpillar stays in there for about 2-3 weeks

9. after that time, the adult starts to emerge (or come out of) the chrysalis

10. since their wings are wet and weak, they have to wait a couple of hours before flying.

11. the wings are strong enough to fly and the butterfly flitters away!

12. then, the cycle starts all over again when the butterfly finds a mate.

:) hope this helped! :)

Answer 5

When a caterpillar reaches a certain age, it evolves into a crysalis. It climbs to a tree branch, forms a protective layer around its skin, and inside the layer it changes (this would be the equivalent of puberty for a caterpillar) into a butterfly.

Please note that I did not include the chemical reasons.

Answer 6

Caterpillars go through varying stages (called instars) in which they molt their skin and become larger. Once they complete the final instar, the caterpillar sheds its skin one last time and goes into the pupa stage, known as a chrysalis. This chrysalis is attached to a twig, branch or leaf with a very strong thread of silk. How long the chrysalis stage lasts depends upon the species of butterfly but once the chrysalis is complete, the caterpillar begins to transform into the beautiful winged creature you see in the spring and summer.

Answer 7

they use this kinda glue sticky stuff then it rauts and turns brown then he hatches

Answer 8

Metamorphosis.