BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I
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Transcript of BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I
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BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I
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Which phyla did we study in class?And what genera represented these phyla?
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CnidariaHydra sp.
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PlatyhelmintheDugesia sp.
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MolluscaVenus sp.
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AnnelidaLumbricus sp.
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What phylum does this organism belong to?What genus does this organism belong to?
Which life form is represented here?What is the other life form?
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CnidariaHydra
Polyp (sedentary)Medusa (free-swimming)
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Other types of organisms that represent the phylum Cnidaria:
• Jellyfish• Sea anemones• Corals• Hydrozoans
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What symmetry do cnidarians show?
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Radial symmetry
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What type of body plan do cnidarians show?
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Diploblasty
• Two germ layers:• Ectoderm• Endoerm
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What internal space acts as the central digestive cavity?
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Gastrovascular cavityIs the gastrovascular cavity a complete or an incomplete gut?
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The gastrovascular cavity is an incomplete (or blind) gut
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Identify:
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Gastrovascular cavity
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Identify:
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TentaclesWhat are the stinging cells of the tentacles called?
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Nematocysts
• Used to paralyze and entangle prey• The tentacles push food through the mouth
opening
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Identify:
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Mouth
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How do members of the genus Hydra reproduce?
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Asexually and sexually (hermaphroditic)What is the asexual method called?
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BuddingNote that budding occurs from the gastrovascular cavity
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Identify:Tissue
What germ layer is it derived from?
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EpidermisDerived from ectoderm
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Identify:Tissue
What germ layer is it derived from?
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GastrodermisDerived from endoderm
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What acellular substance joins the tissue tissues?
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Mesoglea
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Is this Hydra a male or female?What is the structure that produces this type of gamete called?
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Male (note the multiple spermaries)Testes (spermaries)
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Is this Hydra a male or female?What is the structure that produces this type of gamete called?
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Female (note that only one ovary is present – as opposed to multiple spermaries in males)
Ovary
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Identify:
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Identify:
Tentacles
(The outer layer)
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Identify:
Tentacles
Epidermis
The middle layer
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Identify:
Tentacles
Epidermis
Mesoglea
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Identify:
Tentacles
Epidermis
Mesoglea
Flagellum
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Identify:
Tentacles
Epidermis
Mesoglea
Mouth
Flagellum
The inner layer
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Identify:
Tentacles
Epidermis
Mesoglea
Mouth
Flagellum
Gastrodemis
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Identify:
Tentacles
Epidermis
Mesoglea
Mouth
Flagellum
Gastrodemis
GastrovascularCavity
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Identify:
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Identify:
Tentacles(Containing nematocysts)
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Identify:
Mouth
Tentacles(Containing nematocysts)
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Identify:
Mouth
Tentacles(Containing nematocysts)
Asexual bud
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What phylum does this organism belong to?What genus does this organism belong to?
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PlatyhelmintheDegusia sp.
• Free-living flatworms• AKA planarians
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What type of symmetry does Degusia sp. show?
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Bilateral symmetry
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What is the term that is used to describe the evolutionary milestone that resulted in the anterior concentration of nervous tissue, in other
words the presence of a head?
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Cephalization
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What body type does Degusia show?
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Acoelomate
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Identify:StructurePurpose
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Auricle (ear-like structure)Contains a variety of sensor cells, chiefly of touch and chemical detection
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Identify:StructurePurpose
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Eye spotsDetect light
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Identify:StructurePurpose
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PharynxFeeding structure
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Identify:
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Identify:
Ventral nerveCords
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Identify:
Ventral nerveCords
Pharynx
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Identify:
Ventral nerveCords
Pharynx
GastrovascularCavity
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Identify:
Ventral nerveCords
Pharynx
GastrovascularCavity
Eyespots
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Identify:
Ventral nerveCords
Pharynx
GastrovascularCavity
Eyespots
Ganglia
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Identify:
Ventral nerveCords
Pharynx
GastrovascularCavity
Eyespots
GangliaAuricles
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Identify:
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Identify:
Pharyngeal chamber
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Identify:
Pharyngeal chamberPharynx
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Identify:
Pharyngeal chamberPharynx
Cilia
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Identify:
Pharyngeal chamberPharynx
Cilia
Lateral branch of gut
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Identify:
Pharyngeal chamberPharynx
Cilia
Lateral branch of gutEndoderm
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Identify:
Pharyngeal chamberPharynx
Cilia
Lateral branch of gutEndodermMesoderm
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Identify:
Pharyngeal chamberPharynx
Cilia
Lateral branch of gutEndodermMesoderm
Ectoderm
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What phylum does this specimen belong to?What genera represented this phylum?
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MolluscaVenus sp.
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Most mollusks share what four characteristic features?
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1) Foot – locomotion and 2) Visceral mass – housing of organs
3) Mantle – Secretes the shell4) Shell – protection (CaCO3 which is made of twp parts, called valves)
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What type of symmetry does Venus exhibit?
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Bilateral symmetry
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What body type does Venus exhibit?
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Triploblastly
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What type of body cavity does Venus exhibit?
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Coelomate
![Page 88: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/88.jpg)
Determine the anatomical positions:
![Page 89: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/89.jpg)
Determine the anatomical positions:
Dorsal
![Page 90: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/90.jpg)
Determine the anatomical positions:
Dorsal
Posterior
![Page 91: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/91.jpg)
Determine the anatomical positions:
Dorsal
Posterior
Ventral
![Page 92: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/92.jpg)
Determine the anatomical positions:
Dorsal
Posterior
Ventral
Anterior
![Page 93: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/93.jpg)
Identify:
![Page 94: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/94.jpg)
Identify:
Pericardium
![Page 95: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/95.jpg)
Identify:
Pericardium
Posterior adductormuscle
![Page 96: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/96.jpg)
Identify:
Pericardium
Posterior adductormuscle
Mantle
![Page 97: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/97.jpg)
Identify:
Pericardium
Posterior adductormuscle
Mantle
Labial palp(the mouth is located here)
![Page 98: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/98.jpg)
Identify:
Pericardium
Posterior adductormuscle
Mantle
Labial palp(the mouth is located here)
AnteriorAdductormuscle
![Page 99: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/99.jpg)
Identify:Note that this image is flipped, so the anterior is the right side, and the posterior is the left side.
You can see this by noting the position of the umbo.
![Page 100: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/100.jpg)
Identify:Note that this image is flipped, so the anterior is the right side, and the posterior is the left side.
You can see this by noting the position of the umbo.
Umbo
![Page 101: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/101.jpg)
Identify:Note that this image is flipped, so the anterior is the right side, and the posterior is the left side.
You can see this by noting the position of the umbo.
Umbo
Mantle
![Page 102: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/102.jpg)
Identify:Note that this image is flipped, so the anterior is the right side, and the posterior is the left side.
You can see this by noting the position of the umbo.
Umbo
Mantle
PosteriorAdductormuscle
![Page 103: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/103.jpg)
Identify:Note that this image is flipped, so the anterior is the right side, and the posterior is the left side.
You can see this by noting the position of the umbo.
Umbo
Mantle
Anterior Adductormuscle
![Page 104: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/104.jpg)
Identify:Note that this image is flipped, so the anterior is the right side, and the posterior is the left side.
You can see this by noting the position of the umbo.
Umbo
Mantle
Anterior Adductormuscle
Foot
![Page 105: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/105.jpg)
Identify:
(The green substance)
![Page 106: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/106.jpg)
Identify:
(The yellow substance)
Digestive gland
![Page 107: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/107.jpg)
Identify:
Digestive glandGonads
![Page 108: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/108.jpg)
Identify:
Digestive glandGonads
Gills
![Page 109: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/109.jpg)
Identify:
Digestive glandGonads
Visceral mass
Gills
![Page 110: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/110.jpg)
Identify:
Digestive glandGonads
Gills
Visceral mass
Foot
![Page 111: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/111.jpg)
Identify:
Digestive glandGonads
Gills
Visceral mass
Foot
Mantle
![Page 112: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/112.jpg)
What phylum does this animal belong to?What genus represented this phylum?
![Page 113: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/113.jpg)
AnnelidaLumbricus sp.
![Page 114: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/114.jpg)
What type of symmetry does Lumbrius demonstate?
![Page 115: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/115.jpg)
Bilateral symmetry
![Page 116: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/116.jpg)
What body type does Lumbricus show?
![Page 117: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/117.jpg)
Triploblasty
![Page 118: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/118.jpg)
How does Lumbricus reproduce?
![Page 119: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/119.jpg)
What type of body cavity does Lumbricus have?
![Page 120: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/120.jpg)
Coelomate
![Page 121: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/121.jpg)
Sexually; Lumbricus is a hermaphroditic, and transfer sperm when mating (they do not self-fertilize)
![Page 122: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/122.jpg)
Identify:
![Page 123: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/123.jpg)
Identify:Prostomium
![Page 124: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/124.jpg)
Identify:MouthProstomium
![Page 125: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/125.jpg)
Identify:MouthProstomium
Peristomium
![Page 126: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/126.jpg)
Identify:MouthProstomium
PeristomiumChaetae
![Page 127: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/127.jpg)
Identify:MouthProstomium
PeristomiumChaetae
Seminal receptacles
![Page 128: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/128.jpg)
Identify:MouthProstomium
PeristomiumChaetae
Seminal receptacles
Female gonopore
![Page 129: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/129.jpg)
Identify:MouthProstomium
PeristomiumChaetae
Seminal receptacles
Female gonoporeMale gonopore
![Page 130: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/130.jpg)
Identify:MouthProstomium
PeristomiumChaetae
Seminal receptacles
Female gonoporeMale gonopore
Spermgroove
![Page 131: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/131.jpg)
Identify:MouthProstomium
PeristomiumChaetae
Seminal receptacles
Female gonoporeMale gonopore
Spermgroove Genital chaetae
![Page 132: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/132.jpg)
Identify:MouthProstomium
PeristomiumChaetae
Seminal receptacles
Female gonoporeMale gonopore
Spermgroove Genital chaetae
Clitellum
![Page 133: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/133.jpg)
Identify:MouthProstomium
PeristomiumChaetae
Seminal receptacles
Female gonoporeMale gonopore
Spermgroove Genital chaetae
ClitellumTubercle
![Page 134: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/134.jpg)
Identify:
![Page 135: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/135.jpg)
Identify:
Mouth
![Page 136: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/136.jpg)
Identify: Pharynx
Pharynx
![Page 137: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/137.jpg)
Identify:
Pharynx
Seminal vesicles
![Page 138: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/138.jpg)
Identify:
Pharynx
Seminal vesicles
Seminal receptacles
![Page 139: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/139.jpg)
Identify:
Pharynx
Seminal vesicles
Seminal receptacles
Crop
![Page 140: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/140.jpg)
Identify:
Pharynx
Seminal vesicles
Seminal receptacles
Gizzard
Crop
![Page 141: BIOL 197L – Lab #7: INVERTEBRATE DIVERSITY AND ANATOMY I](https://reader035.fdocuments.in/reader035/viewer/2022062316/56816775550346895ddc6b63/html5/thumbnails/141.jpg)
Identify:
Pharynx
Seminal vesicles
Seminal receptacles
GizzardIntestines
Crop