Kingdom Animalia. Types of Symmetry Radial Bilateral Asymmetrical – No symmetry.
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Transcript of Kingdom Animalia. Types of Symmetry Radial Bilateral Asymmetrical – No symmetry.
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Kingdom Animalia
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Types of Symmetry
RadialBilateral
Asymmetrical – No symmetry
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Phylum Porifera
• Pore bearing
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Phylum Porifera
• Pore bearing• Asymmetrical• Sessile• Skeleton made
of Spicules or Spongin
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SpiculesSpiculesMade of CaCOMade of CaCO33
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SpiculesSpiculesMade of SiOMade of SiO22
Deep sea sponge called “glass sponge”
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Spongin – protein fibers
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Phylum Porifera
• Pore bearing• Asymmetrical• Sessile• Spicules or
Spongin
• Filter feeder
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Collar Cells – Ingest food, move waterSpicules – Structure & DefensePore – Allows water inFlagella – Moves waterOsculum – excurrent opening
Collar cells
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Phylum Porifera
• Pore bearing• Asymmetrical• Sessile • Spicules or Spongin• Filter feeder• Aggregation of
specialized cells. No tissues.
• No Circulatory System• No Digestive system• External, sexual
reproduction; often hermaphroditic
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Phylum Porifera
• Pore bearing• Asymmetrical• Sessile • Spicules or Spongin• Filter feeder• Aggregation of
specialized cells. No tissues.
• No Circulatory System• No Digestive system• External, sexual
reproduction; often hermaphroditic
• Reproduces asexually by budding
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Phylum CtenophoraCommon name – Common name –
comb jelliescomb jellies
• 8 comb rows8 comb rows
• Sticky cells Sticky cells
• Biradial symmetryBiradial symmetry
• Has two layers of Has two layers of tissuetissue
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Phylum CtenophoraCommon name – Common name –
comb jelliescomb jellies• 8 comb rows8 comb rows• Sticky cells Sticky cells • Biradial symmetryBiradial symmetry• Two tissue layersTwo tissue layers• Mouth opens to a Mouth opens to a
branched gut, branched gut, complete digestive complete digestive systemsystem
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Phylum CtenophoraCommon name – comb Common name – comb
jelliesjellies• 8 comb rows8 comb rows• Sticky cells Sticky cells • Biradial symmetryBiradial symmetry• Two tissue layersTwo tissue layers• Complete digestive Complete digestive
systemsystem• Often bioluminescentOften bioluminescent
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Phylum CtenophoraCommon name – comb jelliesCommon name – comb jellies• 8 comb rows8 comb rows• Sticky cells Sticky cells • Biradial symmetryBiradial symmetry• Two tissue layersTwo tissue layers• Complete digestive systemComplete digestive system• Often bioluminescentOften bioluminescent• Most are hermaphrodites – Most are hermaphrodites –
external sexual fertilization, external sexual fertilization, sperm & egg are released sperm & egg are released through mouththrough mouth
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Larvae
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Phylum CtenophoraCommon name – comb jelliesCommon name – comb jellies• 8 comb rows8 comb rows• Sticky cells Sticky cells • Biradial symmetryBiradial symmetry• Two tissue layersTwo tissue layers• Complete digestive systemComplete digestive system• Often bioluminescentOften bioluminescent• Most hermaphrodites – Most hermaphrodites –
external sexual fertilizationexternal sexual fertilization• No respiratory systemNo respiratory system• No circulatory systemNo circulatory system• Nerve Net (no centralization) Nerve Net (no centralization)
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Statocyst
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Benthic ctenophore
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Phylum Cnidaria• Stinging cells
(nematocysts)
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Nematocyst
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Phylum Cnidaria• Stinging cells
(nematocysts)
• Radial symmetry
• Incomplete digestive system
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Phylum Cnidaria• Stinging cells
(nematocysts)
• Radial symmetry
• Incomplete digestive system
• Some alternate between polyp & medusa
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PLANULA LARVAE
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POLYP
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Strobilization
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EPHYRA
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MEDUSA
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MEDUSA
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Hydroids
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Corals
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Corals and Zooanthids
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Sea Anemones
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WORMWORMSS
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Phylum Platyhelminthes
• Flatworms - Dorsoventrally flattened (top to bottom)
• Digestive tract has one opening• Simple nervous system with two ganglia
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Phylum Platyhelminthes
• Flatworms - Dorsoventrally flattened (top to bottom)
• Digestive tract has one opening• Simple nervous system with two ganglia• No true circulatory or respiratory systems
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Phylum Platyhelminthes
• Three tissue layers – ectoderm, mesoderm, endoderm
• Most are simultaneous hermaphrodites, and can often self fertilize
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Tapeworm in a Carp
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Phylum Nematoda
• Long, tapered, cylindrical shape
• Longitudinal muscles
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Phylum Nematoda
• Long, tapered, cylindrical shape• Longitudinal muscles• Complete Digestive system• No circulatory or respiratory systems• Pseudocoelom
Roundworms
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Phylum Nematoda
• Long, tapered, cylindrical shape• Longitudinal muscles• Complete Digestive system• No circulatory or respiratory systems• Pseudocoelom• Reproduce sexually. Internal fertilization.
Fertilized eggs are released into the water.
Roundworms
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PSEUDOCOELOM
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Phylum Annelida
• Segmented worms• Coelom
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Phylum Annelida
• Segmented worms• Coelom• Circular muscles
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Phylum Annelida
• Segmented worms• Coelom• Circular muscles• Circulatory system
(closed system)
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Phylum AnnelidaPhylum Annelida(polychaetes)(polychaetes)
• Segmented wormsSegmented worms• CoelomCoelom• Circular musclesCircular muscles• Circulatory systemCirculatory system
(closed system)(closed system)Reproduction – separate Reproduction – separate
gendersgendersrelease sperm & egg release sperm & egg into waterinto water
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Class PolychaetaClass Polychaeta • Many BristlesMany Bristles
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GillsGills
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Sandcastle WormSandcastle Worm
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Other Worms
Ribbon Worms (Nemerteans)
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Other Worms
Peanut Worms (Sipunculids)
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Other Worms Gutless Worms (Pogonophora)