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C2 l2 notes
 

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SCOTTS FORESMAN SCIENCE - Unit A Chapter 2 Lesson 2 Notes

SCOTTS FORESMAN SCIENCE - Unit A Chapter 2 Lesson 2 Notes

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    C2 l2 notes C2 l2 notes Presentation Transcript

    • 12-12-12 Chapter 2 - Lesson 2How do Spiders and Insects Grow? Vocabulary nymph larva pupa1. nymph - a stage in an insect life cyclebetween egg and adult that looks like anadult that has no wings.2. larva - a young animal that has adifferent shape than the adult.3. pupa - the stage in the insect life cyclebetween larva and adult.
    • Chapter 2 - Lesson 2 How do Spiders and Insects Grow? Quick Quiz1. What is an arachnid? An arachnid is ananimal with two body parts and eight legs;includes spiders).2. How would you describe the body of aninsect? The body of an insect has three mainthings: six legs, 3 main body parts & wings3. Sequence (put in order) the steps that makeup the spiders life cycle (A36) There are 5steps in the spider life cycle. They are: egg sac,baby spiders grow, hatch, adult, reproduce.
    • Science Background· Spiders are arachnids and have eight legs, two body segments, and no wings. In sects, another group of invertebrates, have six legs, three main body segments, and many have wings.· A spider life cycle consists of the following events: a spider makes an egg sac, young spiders grow from eggs in the egg sac, the spiders hatch and break out of the sac, young spiders grow into adults and produce offspring of their own.· The three-stage insect life cycle (incomplete metamorphosis) includes egg, nymph, and adult. The nymphs of many insects, such as grasshopppers, look like their parents. However, the nymphs of some insects, such as dragonflies, differ greatly from their parents.
    • 1-2-12 Raise Questions p. 38-391. What is a larva? A larva is...2. What is a pupa? A pupa is
    • Chapter 2 Lesson 2 - How Do Spiders and Insects Grow Review Questions page A391. How does the body of a young spider compare with thebody of an adult spider?2. How is a three-sage insect life cycle different from a four-stage insect life cycle?3. It takes a caterpillar about two hours to hatch from itsshell. Suppose is started hatching at 12:15 P.M. At whattime would it finish?