Metamorphosis Metamorphosis Metamorphosis refers to the way that














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Metamorphosis

Metamorphosis � Metamorphosis refers to the way that certain organisms develop, grow and change form. � Metamorphosis means “change. ”

Types of Metamorphosis �Incomplete STAGES �Complete STAGES Metamorphosis- 3 Metamorphosis- 4 or 5

Complete Metamorphosis Example: butterfly � Egg � Larva � Pupa � Adult

Egg � Female lays eggs.

Larva � Larva hatch from the eggs. They do not look like adult insects. They usually have a wormlike shape. � Caterpillars, maggots and grubs are all just the larval stages of insects. Larvae molt their skin several times and they grow slightly larger.

Pupa � Larva make cocoons around themselves. � Larva don’t eat while they’re inside their cocoons. � Their bodies develop into an adult shape with wings, legs, internal organs � This change takes anywhere from 4 days to many months.

Adult � Inside the cocoon larvae change into adults. � The adult will break out of the cocoon.

Incomplete Metamorphosis Grasshopper �Egg �Nymph �Adult

Egg �A female insect lays eggs. � These eggs are often covered by a case which protects the eggs and holds them together.

Nymph � Eggs hatch into nymphs. � Nymphs are similar to the adult but do not have wings. � Nymphs eat the same food as the adult grasshopper. � Nymphs shed or molt their exoskeletons (outer casing). They are replaced with larger ones as they grow.

Adult � Insects stop molting when they reach their adult size. � They grow wings.

Frogs � Frogs undergo a complete metamorphosis as well. (5 stages) � Egg � Tadpole: lives in the water, breathes with gills, and has a tail. � Tadpole with legs

Frogs � Froglet: As the tadpole grows, lungs and legs form, and the gills and tail are absorbed into the body. � Adult Frog: animal leaves the water and lives mainly on land, as a frog.
Egg larva pupa adult
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