first assignment start a new section for chapter 42 answer in binders: name 10 examples of...
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First AssignmentFirst Assignment
Start a new section for Chapter 42Start a new section for Chapter 42 Answer in binders:Answer in binders:
Name 10 examples of vertebratesName 10 examples of vertebrates
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Prior KnowledgePrior Knowledge
What do you know about frogs?What do you know about frogs?
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Chapter 42Chapter 42
AmphibiansAmphibians
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GOAL 1:GOAL 1:
Five major characteristics of living Five major characteristics of living amphibiansamphibians 1. metamorphosis1. metamorphosis 2. moist, thin skin; no scales2. moist, thin skin; no scales 3. webbed feet (no claws)3. webbed feet (no claws) 4. use gills, lungs, skin in respiration4. use gills, lungs, skin in respiration 5. external fertilization; eggs laid in water 5. external fertilization; eggs laid in water
and lack shellsand lack shells
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GOAL 2:GOAL 2:
Three orders of living Three orders of living amphibiansamphibians
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1. ANURA- tailless amphibians1. ANURA- tailless amphibiansfrogs and toadsfrogs and toads
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2. URODELA- with tails2. URODELA- with tailssalamanderssalamanders
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3. APODA- without legs3. APODA- without legscaecilianscaecilians
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42-2 Characteristics of 42-2 Characteristics of AmphibiansAmphibians
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GOAL 4:GOAL 4:
Amphibians live in moist or wet Amphibians live in moist or wet environments:environments: Skin must allow rapid diffusion of gasesSkin must allow rapid diffusion of gases Mucus glands- keep skin moistMucus glands- keep skin moist
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GOAL 5:GOAL 5:
The skeleton of the frog absorbs shocks The skeleton of the frog absorbs shocks when the frog jumpswhen the frog jumps
Hind legs are longHind legs are long Tibia and fibula are fusedTibia and fibula are fused Radius and ulna are fusedRadius and ulna are fused The pectoral and pelvic girdles transfer The pectoral and pelvic girdles transfer
body weight to the limbsbody weight to the limbs
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GOAL 6:GOAL 6:
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GOAL 7:GOAL 7:
How a frog fills its lungs with air:How a frog fills its lungs with air: Air goes into mouth by lowering the floor of Air goes into mouth by lowering the floor of
its mouth cavityits mouth cavity Air is pumped into lungs by raising its mouth Air is pumped into lungs by raising its mouth
and closing nostrilsand closing nostrils Lungs force air back out of the mouth Lungs force air back out of the mouth Nostril opens and floor of mouth rises to Nostril opens and floor of mouth rises to
force air outforce air out
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Homework:Homework:
Read pages 818-829 in textbookRead pages 818-829 in textbook Complete BOTH sides of Homework Complete BOTH sides of Homework
handouthandout
INVERTEBRATE assignment is DUE INVERTEBRATE assignment is DUE tomorrow. Meet in our classroom.tomorrow. Meet in our classroom.
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FIRST ASSIGNMENT:FIRST ASSIGNMENT:
Make a new section in your binders for Make a new section in your binders for Chapter 17 Amphibians.Chapter 17 Amphibians.
Write down EVERYTHING you know Write down EVERYTHING you know about frogs.about frogs.
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