Second Grade—Science Kristin Seaman February 19, 2013 Life Cycle of a Monarch Butterfly
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Metamorphosis • A butterfly develops through four stages of a cycle called, metamorphosis. • Metamorphosis includes: • Egg • Larva (caterpillar) • Pupa (chrysalis) • Adult (butterfly) Metamorphosis Breakdown
Eggs • A female butterfly lays hundreds of eggs on leaves. • Within a couple of days, the larva inside the eggs begin to squirm.
Larva (Caterpillar) • After the eggs hatch, they will now be larva, or as we usually call them, caterpillars. • This is the stage where the butterflies do all of their growing. • Caterpillars are constantly eating. • Once they start growing, they shed their skin.
Pupa (Chrysalis) • A caterpillar attaches itself to a tree where it begins pupation. • The pupa stage usually lasts 10 to 14 days. • This is where it undergoes the final stage of metamorphosis.
Adult Butterfly • The pupa undergoes its final transformation and a butterfly is slowly forming. • The final stage is accomplished and a butterfly emerges. • An adult monarch feeds on nectar from flowers and reproduces to start the lifecycle over again.
Brief overview of the lifecycle: Metamorphosis Egg Larva (caterpillar) Pupa Adult (butterfly)
Identifying the stages of a Monarch Butterfly See if you can label each stage correctly by clicking here!
Test Question #1:How many stages of metamorphosis are there? • Six • Four • Eight • Three
Test Question #2:How long does the pupa stage usually last? • 6-10 days • 20-22 days • 25-30 days • 10-14 days
Test Question #3:Which one is not a stage of metamorphosis? • Pupa • Egg • Spawn • Larva
Credits: • http://teacher.scholastic.com/lessonrepro/lessonplans/instructor/science2.htm#circle • http://www.klru.org/butterflies/pdf/lesson2.pdf • http://www.klru.org/butterflies/pdf/lesson3.pdf • http://www.klru.org/butterflies/pdf/lesson4.pdf • http://www.youtube.com/watch?v=7AUeM8MbaIk • http://www.softschools.com/science/butterfly/life_cycle.jsp