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Complete and Incomplete Metamorphosis

Complete and Incomplete Metamorphosis. Let’s look at the difference!. Modified from a presentation by the Lebanon Special School District. What is metamorphosis?. Metamorphosis refers to the way that certain organisms develop, grow, and change form.

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Complete and Incomplete Metamorphosis

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  1. Complete and Incomplete Metamorphosis Let’s look at the difference! Modified from a presentation by the Lebanon Special School District.

  2. What is metamorphosis? • Metamorphosis refers to the way that certain organisms develop, grow, and change form. • Metamorphosis actually means "change".

  3. Two Types of Metamorphosis • INCOMPLETE METAMORPHOSIS - has THREE stages • COMPLETE METAMORPHOSIS - has FOUR stages.

  4. INCOMPLETE METAMORPHOSIS Let’s take a closer look at each stage!

  5. 3 STAGES OFINCOMPLETE METAMORPHOSIS • Egg • Nymph • Adult

  6. EGG • A female insect lays hundreds or thousands of eggs. These eggs are often covered by an egg case which protects the eggs and holds them together.

  7. NYMPH • In an incomplete metamorphosis, 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.

  8. ADULT • The insects stop molting when they reach their adult size. By this time, they have also grown wings.

  9. COMPLETE METAMORPHOSIS Let’s take a closer look at each stage!

  10. 4 STAGES OFCOMPLETE METAMORPHOSIS • Egg • Larva • Pupa • Adult

  11. EGG • The female lays hundreds or thousands of eggs.

  12. 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.

  13. PUPA • A pupa makes a cocoon around itself. • A pupa doesn't eat while it’s inside its cocoon. • Their bodies develop into an adult shape with wings, legs, internal organs, etc. • This change takes anywhere from 4 days to many months.

  14. ADULT • Inside the cocoon, the larvae change into adults. After a period of time, the adult breaks out of the cocoon.

  15. Let’s see what we know! Let’s take Professor Know-It-All’s Quiz and see what we have learned!

  16. QUESTION #1 What are the two types of metamorphosis? Complete Incomplete

  17. QUESTION #2 • How many stages are there in an incomplete metamorphosis? Answer: 3

  18. QUESTION #3 Name the three stages of an incomplete metamorphosis. Egg Nymph Adult

  19. QUESTION #4 How many stages are there in a complete metamorphosis? Answer: 4

  20. QUESTION #5 Name the stages in complete metamorphosis. Egg Larva Pupa Adult

  21. QUESTION #6 Identify the pictured life cycle as complete or incomplete metamorphosis.

  22. QUESTION #7 Identify the pictured life cycle as complete or incomplete metamorphosis.

  23. QUESTION #8 D E C F B A Identify each stage of the complete metamorphosis of the butterfly.

  24. YOU’VE JUST COMPLETEDA PROFESSOR KNOW-IT-ALL QUIZ!!!! How did you do???

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