wunder beta

🦋 How does a caterpillar turn into a butterfly?

Hormones time the rebuild; imaginal discs assemble the adult inside the chrysalis.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

Start the course →

What you’ll learn

Eat, molt, grow — the larval engineFrame the caterpillar as a feeding stage timed by hormones and instars.Larvae molt through instars under juvenile hormone and ecdysone control. Their job is mass and energy storage, not flight practice.
Inside the chrysalisExplain pupal remodeling via imaginal discs, not pure magic goo.Pupation recycles larval tissues while imaginal programs build adult structures. Energy stores fund an expensive, timed rebuild.
Emergence and a new careerDescribe eclosion, wing expansion, and the evolutionary logic of two lifestyles.Adults expand and harden wings, then shift to nectar and reproduction. Complete metamorphosis splits ecological jobs across stages.

Questions this course answers

Order the stages of complete metamorphosis

Butterflies are holometabolous: egg → larva → pupa → adult, with major remodeling in the pupa.

What are imaginal discs?

Imaginal discs are groups of cells set aside in the larva that proliferate and differentiate into adult organs during pupation.

Educational feel check: after eclosion, wings must expand and harden before flight. Roughly how many stages did we treat as the full complete-metamorphosis sequence (egg through adult)?

Classic complete metamorphosis is taught as four stages: egg, larva, pupa, adult.

Grounded in trusted sources

Smithsonian / museum entomology pages on complete metamorphosis
University insect physiology notes on juvenile hormone and ecdysone
USDA / extension education on butterfly and moth life cycles
Developmental biology reviews of imaginal discs in holometabolous insects

Every Wunder lesson is built from real, reputable sources — never invented.

Related Science courses

🦋Complete Metamorphosis 🦋How a Caterpillar Becomes a Butterfly ⭐How do stars make light?👃How does the sense of smell work?🧊How do glaciers carve valleys?🦇How does a bat navigate in the dark?🩸How does blood clot?🪸How do coral reefs grow?

Wunder is a personalized learn-anything platform — tell it any topic and it builds a beautiful, fact-checked course in minutes, with narration, a knowledge check, and a college-style University track.

Browse more Science courses · All topics · Home