Introduction to Science - skirbst.orgskirbst.org/15-Invertebrates.pdf · - “pore-bearers” (have...
Transcript of Introduction to Science - skirbst.orgskirbst.org/15-Invertebrates.pdf · - “pore-bearers” (have...
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Kingdom Animalia
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Animals
- multicellular heterotrophs whose cells lack cell walls
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2 Major Divisions
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2 Major Divisions
1- Invertebrates (no backbone)
2- Vertebrates (backbone)
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Phylum Porifera
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Phylum Porifera
- “pore-bearers” (have many holes)
- simplest invertebrates
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Phylum Porifera
- “pore-bearers” (have many holes)
- simplest invertebrates
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Sponges
- Have many pores
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Sponges
- Have many pores
- Show little movement
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Sponges
- Have many pores
- Show little movement
- Reproduce sexually & asexually
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Sponges
- Have many pores
- Show little movement
- Reproduce sexually & asexually
- Cells can “reorganize”
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Sponges
- Typical Sponge:
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Phylum Cnidaria
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Phylum Cnidaria
From the Greek word:“to sting”
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Phylum Cnidaria
From the Greek word:“to sting”
- Have nematocysts (stinging structure)
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Phylum Cnidaria
From the Greek word:“to sting”
- Have nematocysts (stinging structure)
- Have central cavity with one opening called a
“mouth”
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Phylum Cnidaria
From the Greek word:“to sting”
- Have nematocysts (stinging structure)
- Have central cavity with one opening called a “mouth”
- Have specialized tissue
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2 Body Forms
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2 Body Forms
1. Polyp – vase shaped
(ex. hydra, coral, anemone)
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2 Body Forms
2. Medusa – bowl-shaped
(ex. jellyfish)
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3 Phylum of Worms
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3 Phylum of Worms
1.Platyhelminthes
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3 Phylum of Worms
1.Platyhelminthes - flat worms
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3 Phylum of Worms
1.Platyhelminthes - flat worms
2.Nematoda
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3 Phylum of Worms
1.Platyhelminthes - flat worms
2.Nematoda - roundworms
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3 Phylum of Worms
1.Platyhelminthes - flat worms
2.Nematoda - roundworms
3. Annelida
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3 Phylum of Worms
1.Platyhelminthes - flat worms
2.Nematoda - roundworms
3. Annelida - segmented worms
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Phylum Mollusca
1.Bivalve
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Phylum Mollusca
1.Bivalve – two shells
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Phylum Mollusca
1.Bivalve – two shells
2. Gastropod
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Phylum Mollusca
1.Bivalve – two shells
2. Gastropod – stomach foot
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Phylum Mollusca
1.Bivalve – two shells
2. Gastropod – stomach foot
3. Cephalopod
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Phylum Mollusca
1.Bivalve – two shells
2. Gastropod – stomach foot
3. Cephalopod – head foot
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Phylum Echinodermata
Spiny skinned
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Phylum Echinodermata
Characteristic - spiny skinned
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Types of Echinoderms
1. Starfish (Sea Star)
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Types of Echinoderms
1. Starfish
2. Sea Urchin
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Types of Echinoderms
1. Starfish
2. Sea Urchin
3. Sea Cucumber
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Phylum Arthropoda
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Characteristics
1. Exoskeleton
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Characteristics
1. Exoskeleton
2. Segmented body
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Characteristics
1. Exoskeleton
2. Segmented body
3. Jointed appendages
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4 Classes of Arthropods
1. Crustacean
2. Myriapods
3. Arachnids
4. Insects
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4 Classes of Arthropods
1. Crustacean
2. Myriapods
3. Arachnids
4. Insects
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4 Classes of Arthropods
1. Crustacean
2. Myriapods
3. Arachnids
4. Insects
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4 Classes of Arthropods
1. Crustacean
2. Myriapods
3. Arachnids
4. Insects