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A N I M A L S & F U N G I - P H Y L A
GENERAL BIOLOGY II LAB PRACTICAL II
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General Biology II Lab Practical 2 Presentation
Animals and Fungi Phyla
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Kingdom Fungi
• Fungi are – Heterotrophic – Sessile – Sexual or Asexual Reproduction – Haploid
• Parts of a Fungus – Hyphae – Mycelium – Spores – Spore-Producing structures (zygosporangium,
basidiosporangium, etc) – Cell Wall composed of chitin
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Chytridiomycota
Chytridiomycetes
Unicellular Molds
Sexual and Asexual Reproduction
Zoospores
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Zygomycota
Zygomycetes - Bread Molds Zygomycetes Have Sporangia Hyphae Zygosporangia Mycelia Sexual and Asexual Reproduction
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Ascomycota
Ascomycetes – Sac Fungi
Ascomycetes Have
Hyphae
Mycelium
Antheridium
Ascogonium
Ascocarp
Ascus
Ascospores
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Basidiomycota Basidiomycetes – Club Fungi
Basidiomycetes Have
Hyphae
Mycelia
Mushrooms
Gills
Basidia
Basidiospores
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Fungi Imperfecta
Fungi Imperfecta
Asexual Reproduction
Example: Penicillin Note: All Fungi have been moved to other Phylums due to all fungi being found to do sexual reproduction.
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Kingdom Animalia
• Animals are
– Heterotrophic
– Motile
– Diploid
– Sexual Reproduction
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Phylum Porifera
Phylum Porifera – Sponges Poriferans Have Asymmetry Begin as larvae Below tissue level of organization Collar Cells – bring in nutrients Amoebocytes – distribute nutrients, make spicules Spicules – calcium carbonate or silica spikes in the extracellular matrix
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Phylum Porifera
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Phylum Porifera
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Phylum Cnidaria
Cnidarians have Radial Symmetry Begin as Polyps, Adults are medusa Some have only a polyp or a medusa stage Ectoderm and Endoderm tissue Mesoglia Incomplete Digestive System No coelom Cnidocytes – stinging cells
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Phylum Cnidaria
Sea Anemone – Class Anthozoa Anthozoans only have a polyp stage
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Phylum Cnidaria
Class Anthozoa - Corals are in the phylum Cnidaria, class Anthozoa
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Phylum Cnidaria
Hydrocoral – Class Hydrozoa Hydrozoans have both a polyp and a medusa stage, and live as colonial polyps.
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Phylum Cnidaria
Man of War – Class Hydrozoa The man of war jellyfish is an example of the medusa stage of cnidarians
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Phylum Cnidaria
Cassiopeia – Class Scyphozoa Scyphozoans have only a medusa stage or a very reduced polyp stage.
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Phylum Platyhelminthes
Phylum Platyhelminthes consists of flatworms, tapeworms and flukes They have Bilateral Symmetry Eye Spots with ganglia and two ventral nerve cords Incomplete digestive system No segments No coelom Protostomes
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Phylum Platyhelminthes
Tapeworms
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Phylum Rotifera
Phylum Rotifera consists of microscopic organisms with some complex organ systems, despite their tiny size Rotifers have Bilateral Symmetry Complete Digestive System Distinctive crown of cilia that draws water into the mouth Pseudocoelom Ability to undergo parthenogenesis Protostome Development
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Phylum Nematoda
Phylum Nematoda – Roundworms Nematodes Have Non-segmented body Cuticle covering (form of exoskeleton) First complete “tube within a tube” body scheme Pseudocoelom Lateral Nerve Cords Protostome Development
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Phylum Annelida
Phylum Annelida – Segmented worms – Earthworms, Leeches Annelids Have Segmented body Complete Digestive tract True coelom Closed circulatory system Gas Exchange through skin (earthworms)
Gills (marine worms)
Pair of metanephridia in each segment Both male and female reproductive organs Protostome Development
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Phylum Annelida
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Phylum Annelida - Model
Hearts
Mouth Pharynx Esophagus
Intestine Gizzard Crop
Ventral Nerve Cord
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Phylum Annelida - Model
Metanephridia
Intestine Blood Vessel
Dorsal Vessel
Nephrostome
Ventral Vessel
Ventral Nerve Cord
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Phylum Annelida - Model
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Mouth
Pharynx
Aortic Arches
Esophagus
Crop
Gizzard
Intestine
How many “hearts” does an earthworm have?
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Phylum Mollusca Phylum Mollusca includes animals like clams, octopi, snails, and mussels
Molluscs Have Bilateral Symmetry Complete digestive system True Coelom Most have open, but some have closed circulatory systems (squid/octopi) Calcareous Shells secreted by mantle Muscular foot Visceral Mass Protostome Development
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Phylum Mollusca – Class Bivalvia
Muscular Foot
Intestines
Mouth
Heart
Mantle
Calcareous Shell
Gill
Stomach
Kidney
Incurrent Siphon
Excurrent Siphon
Umbo
Posterior Adductor
Anterior Adductor
Pericardial Sinus
Labial Palps
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Phylum Mollusca
Class Bivalvia – Clams, Oysters, etc Bivalves Have Calcareous Shells secreted by the mantle, covers visceral mass Muscular foot for movement Complete digestive system Open circulatory system
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Phylum Mollusca
Class Gastropoda – Snails, Slugs Gastropods Have Single spiraled shell, or no shell in slugs Complete Digestive System Undergo torsion in embryonic development Distinct head with eyes Have Radula Have gills
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Phylum Mollusca
Class Cephalopodia – Squids, Octopi, Chambered Nautiluses Cephalopods Have Closed Circulatory System Well Developed Brains Internalized or nonexistent shell (nautiluses are the only cephalopods with a shell)
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Phylum Arthropoda
Phylum Arthropoda – Insects, Arachnids, and Crustaceans Arthropods have Exoskeleton made of chitin Open circulatory system Bilateral Symmetry Complete Digestive Tract Ventral nerve cords Segmented Bodies Jointed legs Protostome Development
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Phylum Arthropoda
Heart
Ovary
Intestine Esophagus
Digestive Gland (Liver)
Stomach
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Phylum Arthropoda
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Phylum Arthropoda
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Phylum Arthropoda
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Phylum Arthropoda
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Phylum Echinodermata
Phylum Echinodermata – Sea stars, sea urchins, sea cucumbers Echinoderms Have Bilateral symmetry as larvae, radial symmetry as adults Endoskeleton of calcium carbonate Closed circulatory system Water vascular system Tube feet Madreporite (entry/exit to water vascular system) Deuterostome Development
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Phylum Echinodermata
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Phylum Echinodermata
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Phylum Hemichordata
Hemichordates – Acorn worms and Pterobranchs
Hemichordates
Rare
Deuterostomes
Three Body Regions
Proboscis
Collar
Trunk
Marine Organisms
Pharyngeal Gill Slits
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Phylum Chordata
Phylum Chordata – All chordates, including tunicates, lancelets, hagfish, lamprey, sharks, fish, amphibians, reptiles, and mammals Everything after this slide is in Phylum Chordata All Chordates Have Bilateral symmetry Closed circulatory system Complete digestive tract True Coelom Deuterostome Development A hollow dorsal nerve cord A notochord Pharyngeal gill slits Post anal tail
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Sub-Phylum Cephalochordata
Sub-phylum Cephalochordata – Lancelets First Chordates
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Oral cirri
Pharangial Gill Slits
Cephalochordata
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Sub-Phylum Urochordata
Sub-Phylum Urochordata – Sea Squirt Tunicates Lose post-anal tail and notochord in adulthood
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Sub-Phylum Vertebrata
• Myxini (Craniate not Vertebrate)
• Petromyzontida
• Chondrichthyes
• Osteichthyes
– Actinopterygii
– Actinista
– Dipnoi
• Amphibia
• Reptilia
– Aves
• Mammalia
• All VERTEBRATES have a backbone, in addition to all the characteristics of chordates.
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Class Myxini
Class Myxini – Hagfish Hagfish have Cephalization, but no backbone Are not true vertebrates Craniates
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Class Petromyzontida
Class Petromyzontida – Lampreys Lampreys Have Teeth True Backbone, no jaw
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Suction Mouth
Class Petromyzontida
Gill Slits
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Class Chondrichthyes
Class Chondrichthyes – Sharks, skates and rays Chondrichthyans Have Living Skeleton made entirely of cartilage Ancient chondrichthyans had bone skeletons Fins for swimming
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Spiny Dogfish Shark
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Spiny Dogfish
Shark
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Spiny Dogfish Shark Heart
Gills
Liver Ovary
Stomach Pancreas Spleen Intestine
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Spiny Dogfish Shark
Pectoral fin
Body of Stomach
Oviduct
Oviductal Arteries
Duodenum
Valvular Intestine
Gallbladder
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Spiny Dogfish Shark
Snout
Ampullae of Lorenzini
Naris Teeth Gills
Heart
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Spiny Dogfish Shark
Uterus
Colon
Dogfish Embryo
Cloaca
Anterior Mesenteric Artery
Posterior Cardinal Vein Spiral Valve
(Exposed)
Rectal Gland
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Liver
Heart
Stomach Spleen
Pancreas
Spiny Dogfish Shark
External Yolk Sac
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Superclass Osteichthyes
• Comprised of 3 classes
– Actinopterygii : Rayfin fish
– Actinista : Lobefin fish
– Dipnoi : Lung fish
• All Osteichthyans have a bony, living skeleton
• Have Scales
• Are cold-blooded
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Superclass Osteichtyes
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Carp – Class Actinopterygii
Spinal Cord
Gills
Kidney Swim Bladder Testis
Heart
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Carp – Class Actinopterygii
Liver Intestine
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Yellow Perch - Actinoptrygii
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Yellow Perch - Actinoptrygii
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Air Bladder
Yellow Perch - Actinopterygii 6
1
8 9
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Class Actinista Class Actinista – Lobe finned fish Only remaining genus is Latimeria (coelacanths) Have Muscular bony fins Vestigial lung
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Class Dipnoi
Class Dipnoi – Lungfish Lungfish Have Functional Lungs Modified fins
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Class Amphibia
Class Amphibia - Frogs, Salamanders, Newts Amphibians Have Legs Lungs – in adult Gills – in tadpole Breathe through skin 3 Chambered heart Cold-Blooded
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Class Amphibia
Heart
Liver
Lung Ova
Gallbladder
Stomach Pancreas
Spleen
Intestine
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Class Amphibia
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Class Reptilia
Class Reptilia – Snakes, lizards, turtles, birds, dinosaurs (extinct) Reptiles have Scales 3 chambered heart with partial septum (complete in crocodilians and birds) Cold-blooded (except for birds)
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Class Reptilia
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Sub-Class Aves
Sub-Class Aves – Birds, are part of reptilia, but are distinct from other reptiles Birds Have Feathers (modified scales) 4 Chambered Heart Warm Blooded Hollow Bones
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Class Mammalia Class Mammalia - Canines, Primates, Humans, Rhinos, etc. Mammals Have Hair 4 chambered heart Milk Warm-Blooded
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Class Mammalia
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Circulation – The Heart
The Mammalian Heart Four Chambers – Right and left Atrium and right and left ventricles Two Atrioventricular Valves – Tricuspid and Bicuspid Two Semilunar Valves – Aortic and Pulmonary
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Circulation
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Circulation
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Blood Pressure
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Tissue Types
• Epithelial Tissue – Covers the outside of the body and lines organs and body cavities – Squamous, Cuboidal, Columnar – Simple, Stratified, Pseudostratified
• Connective Tissue – Sparse population of cells scattered through extracellular matrix – Bone, Blood, Cartilage, Fibrous, Loose, Adipose,
• Muscle Tissue – Contracts – Skeletal, Smooth, Cardiac
• Nervous Tissue – Receive, process and transfer information – Neurons, Glia
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Epithelial Tissue Stratified Squamous – multilayered, regenerates rapidly, found in harsh environments in/on the body
Simple Squamous – single layer of flat cells, found in capillaries
Simple Cuboidal – single layer of cube-shaped cells, found in kidneys and glands
Simple Columnar – single layer of tall column-like cells, found in intestines
Pseudostratified Columnar – squished and abnormally shaped columnar cells, usually ciliated, found in upper respiratory tract
Reproductive Cells – sperm and egg cells are haploid gametes
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Connective Tissue
Adipose – Cells contain a large fat droplet, used for energy storage
Loose/Areolar - binds epithelia and organs in place, has loosely connected fibers
Fibrous – dense with collagenous fibers, found in tendons and ligaments
Blood – made up of plasma, erythrocytes, leukocytes and platelets, carries nutrients and wastes
Bone – Osteocytes, osteoblasts, and osteoclasts suspended in an extracellular matrix of hard calcium
Cartilage – chondrocytes secrete a rubbery matrix of collagen and chondroitin sulfate, found in joints
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Muscle Tissue
Skeletal Muscle – Bundles of long, un-branched, striated cells, responsible for voluntary movement, made up of sarcomeres
Smooth Muscle – non-striated and spindle shaped, responsible for involuntary activity of things like the stomach and constriction/dilation of arteries
Cardiac Muscle – branched and striated, has intercalated disks to help transfer of electrical signals, found only in the heart, responsible for contraction of the walls of the heart
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Nervous Tissue
Neurons – Receive and transmit signal throughout the body via the nervous system. Have dendrites for receiving impulses from other nerve cells and axons for sending out impulses to other cells Glia – cells that support, nourish, and insulate the neurons
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Prepared by D. Leonard - Learning Specialist & K. Martin – Peer Tutor The Academic Support Center @ Daytona State College http://www.daytonastate.edu/asc/ascsciencehandouts.html
Questions