metamorphosis power point
TRANSCRIPT
![Page 1: Metamorphosis Power Point](https://reader034.vdocument.in/reader034/viewer/2022042623/5526500a550346446f8b4c8e/html5/thumbnails/1.jpg)
Complete and
Incomplete Metamorphosis
Let’s look at the difference!
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What is metamorphosis?Metamorphosis refers to the way
that certain organisms develop, grow, and change form.
Metamorphosis actually means "change".
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Two Types of Metamorphosis
INCOMPLETE METAMORPHOSIS - has THREE stages
COMPLETE METAMORPHOSIS -
has FOUR stages.
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INCOMPLETE METAMORPHOSIS
Let’s take a closer look
at each stage!
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3 STAGES OFINCOMPLETE METAMORPHOSIS
Egg
Nymph
Adult
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EGG
A female insect lays eggs. These eggs are often covered by an egg case which protects the eggs and holds them together.
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NYMPH
The eggs hatch into nymphs. Nymphs looks like small adults, but usually don't have
wings. Insect nymphs eat the same food that the adult insect eats. Nymphs shed or molt their exoskeletons (outer casings
made up of a hard substance called chitin) and replace them with larger ones several times as they grow.
Most nymphs molt 4-8 times.
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ADULT
The insects stop molting when they reach their adult size. By this time, they have also grown wings.
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COMPLETE METAMORPHOSIS
Let’s take a closer look
at each stage!
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4 STAGES OFCOMPLETE METAMORPHOSIS
EggLarvaPupaAdult
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EGG
The female lays eggs.
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LARVA
Larva hatch from the eggs. They do not look like adult insects. They usually have a worm-like shape.
Caterpillars, maggots, and grubs are all just the larval stages of insects. Larvae molt their skin several times and they grow slightly larger.
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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, etc. This change takes anywhere from 4 days to
many months.
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ADULT
Inside the cocoon, the larvae change into adults. After a period of time, the adult breaks out of the cocoon.
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WHAT ABOUT FROGS?
Frogs undergo a different type of COMPLETE METAMORPHOSIS.
From the egg emerges a tadpole, which lives in the water, breathes with gills, and has a tail.
As the tadpole grows, lungs and legs form, and the gills and tail are absorbed into the body.
Finally, the animal leaves the water and lives mainly on land, as a frog.
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Let’s see what we know!Let’s take Professor
Know-It-All’s Quiz
and see what we have
learned!
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QUESTION #1 What are the two types of
metamorphosis?
1. Complete
2. Incomplete
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QUESTION #2 How many stages are there in
incomplete metamorphosis?
Answer: 3
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QUESTION #3 Name the stages of incomplete
metamorphosis?
1. Egg2. Nymph3. Adult
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QUESTION #4 How many stages are there in
complete metamorphosis?
Answer: 4
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QUESTION #5- Name the stages in complete
metamorphosis.
1. Egg2. Larva3. Pupa4. Adult
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QUESTION #6
Identify the cycle as complete or incomplete metamorphosis.
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QUESTION #7
Identify the cycle as complete or incomplete metamorphosis.
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QUESTION #8
Identify each stage of the complete metamorphosis of the butterfly.
AB
C
D
E
F
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QUESTION #9
Identify the lifecycle of the frog as complete or incomplete metamorphosis.
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YOU’VE JUST COMPLETEDPROFESSOR KNOW-IT-ALL’S QUIZ
How did
you do?