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Life Cycles

Life Cycles. Metamorphosis- when an organism goes through many stages to reach adulthood. Complete- ELPA Incomplete- ENA COMPLETE: egg, larva, pupa, adult INCOMPLETE: egg, nymph, adult Most insects, in the adult stage, have wings. Example: worker ants. Complete:

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Life Cycles

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  1. Life Cycles

  2. Metamorphosis- when an organism goes through many stages to reach adulthood. • Complete- ELPA • Incomplete- ENA • COMPLETE: egg, larva, pupa, adult • INCOMPLETE: egg, nymph, adult • Most insects, in the adult stage, have wings. • Example: worker ants

  3. Complete: • Larva is very different from the adult stage in its physical characteristics • Egg, Larva (worm-like state), pupa (chrysalis or cocoon state), adult • Chrysalis= butterfly, Cocoon= any other insect • A protective covering of a pupa that forms as a pupa changes to its adult state. • Example: butterflies, mealworms, moths, etc.

  4. Incomplete: • After molting process (shedding outer layer of skin) more characteristics are added to appear as an adult. • Egg, Nymph (baby that looks similar to adult), Adult • Example: crickets, cockroaches, etc.

  5. Complete Complete or incomplete?

  6. Incomplete Complete or incomplete?

  7. Incomplete Complete or incomplete?

  8. Complete Complete or incomplete?

  9. Incomplete Complete or incomplete?

  10. Complete Complete or incomplete?

  11. Egg, tadpole (has a tail), froglet (smaller tail, legs form), adult (no tail) Life cycle of a FROG

  12. What do the arrows in a life cycle diagram represent? Answer: the sequence of stages in the cycle **Starts as egg, becomes a larva, becomes a pupa, becomes and adult that can reproduce and lay eggs.

  13. http://www.youtube.com/watch?v=urk-_Uh2vbg http://www.youtube.com/watch?v=wFfO7f8Vr9c http://www.youtube.com/watch?v=DetytCrn7Oc http://www.youtube.com/watch?v=zASo9zf4DRs http://www.youtube.com/watch?v=V-ro_13Ed28

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