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Lab G

Terms

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Porifera are...
Sponges
What are the simplest of animals?
Porifera
How does water circulate in sponges and what is its function?
Circulates through canals and small pores.
This brings food particles and oxygen and removes waste and Carbon Dioxide.
What is the skeletal system of Porifera made of?
Spicules or Spongin Network
What are the three types of skeletal stystems in Porifera?
Calcareous Spicules
Siliceous Spicules
Spongin Network
What sort of reproduction does Porifera exhibit?
Asexual and sexual
Cnidaria are...
Jellyfish
Sea anemone
Corals
What type of symmetry to Cnidaria exhibit?
Radial
Cnidaria: Layers
Diploblastic
What are the body types of Cnidaria?
Polyps - Bottom-dwellers
Medusa or jellyfish - Floating and free-ranging
What are the stinging cells of Cnidaria called?
Nematocysts
What sort of skeleton do polyps have?
Hydrostatic skeleton
What sort of skeleton do corals have?
Exoskeleton
What sort of digestive tract do Cnidaria have?
Gastrovascular cavity
Cnidaria: Reproduction
Sexually and asexually
What is the larval stage of a polyp called?
Planula
Platyhelminthes are...
Flatworms
Flukes
Tapeworms
Platyhelminthes: Symmetry
Bilateral
Platyhelminthes: Layers
Triploblastic
Platyhelminthes :Body Cavity
Acoelomata
What are flame cells?
Excretory system of Platyhelminthes
What is a segment of a tapeworm called?
Proglottid
Nematoda are...
Round worms
Nematoda: Symmetry
Bilateral
Nematoda: Layers
Triploblastic
In what did the first digestive system develop?
Phylum Nematoda
Nematoda: Body Cavity
Pseudocoelomata
Nematoda: Skeleton
Hydrostatic
Nematoda: Reproduction
Sexual
Annelida are...
Segmented Worms
Annelida: Symmetry
Bilateral
Annelida: Layers
Triploblastic
What are parapodia?
Who has them?
Gills for respiration in water
Annelida
Annelida: Excretory system of...
Nephridia
Annelida: Body cavity
Coelomata
Annelida: Mesoderm
Schizocoelom - choelom forms by splittling of mesoderm
Annelida: Blastopore forms...
Mouth
Annelida: Skeleton
Hydrostatic
Metamerism
True segmentation
Annelida: Reproduction
Sexual
Phylum Anthropoda are...
Insects
Spiders
Centipedes
Millipedes
Crustaceans
Anthropoda: Symmetry
Bilateral
Anthropoda: Layer
Triploblastic
Excretory system in insects
Malpighian tubules
Excretory system in crayfish
Green gland
Respiratory system in insects
Trachea
Respiratory system in spiders
Book lungs
Respiratory system in crustaceans
Gills
Anthropoda: Body Cavity
Coelomic
Anthropoda: Mesoderm
Schizocoelom
Anthropoda: Blastopore becomes...
mouth
Anthropoda: Skeleton
Made of...
Exoskeleton of chitin
Anthropoda: Segmentation
True
Anthropoda: Reproduction
Sexual, and occasional asexual
Phylum Mollusca are...
Clams
Snails
Squids
Mollusca: Symmetry
Bilateral
Mollusca: Layers
Triploblastic
Eye of squid
Camera
Circulatory system of squid
Closed
Circulatory system of clams
Open
Mollusca: Excretory
Kidney
Mollusca: Respiratory
Gills
Mollusca: Body Cavity
Coelom
Mollusca: Mesoderm
Schizocoelom
Mollusca: Blastopore becomes...
Mouth
Mollusca: Skeleton
What is it made of?
Exoskeleton
Usually made of calcium carbonate
Mollusca: Segmentation
Mollusca: Reproduction
Sexual
Echinodermata are...
Starfish
Sea Urchins
Sand Dollars
Sea Cucumbers
Echinodermata: Symmetry
Bilateral in larvae
Pentaradial in most adults
Echinodermata: Layers
Triploblastic
Echinodermata: Respiration
Through feet
Echinodermata: Body Cavity
Coelom
Echinodermata: Mesoderm
Enterocoelom forms when mesoderm forms pouch
Echinodermata: Blastopore...
Anus (Deuterostomata)
Echinodermata: Skeleton
Endoskelteon in most - thin skin over hard shell
Hydrostatic skeleton in sea cucumbers
Echinodermata: Segmentation
Echinodermata: Vascular system
Water vascular system with tube feet
Echinodermata: Reproduction
Sexual
Phylum Chordata are...
Fishes
Amphibians
Reptiles
Birds
Mammals
Chordata: Symmetry
Bilateria
Chordata: Layers
Triploblastic
Chordata: Eyes
Camera
Chordata: Body Cavity
Coelom
Chordata: Mesoderm
Enterocoelom
Chordata: Blastopore
Anus
Chordata: Skeleton
Made of...
Endoskeleton of cartilage and/or bones
What is a Notochord?
Flexible rod down back in embryo and sometimes adults in Chordata
Chordata: Throat
Pharynx with gill slits
Chordata: Segmentation
True
Chordata: Reproduction
Sexual
When did the Animal phyla appear?
During the Cambrian Explosion
What is the fundamental difference between Subkingdom Parazoa and Subkingdom Eumetazoa?
Parazoa do not have organ systems.
What are the two phyla in Branch Radiata?
Cnidaria and Ctenophores
What is the difference between Branch Radiata and Branch Bilateria?
Overall body symmetry and number of body layers.
What are the different types of symmetry and give examples.
Asymmetry - Amoeba
Spherical Symmetry - Protozoa
Radial Symmetry - Jellyfish
Bilateral Symmetry - Human
What implications does symmetry have on an organism?
For example, what can we tell about organisms with radial symmetry.
They are sessile (non-mobile)
What is the development of a distinct head called?
Cephalization
What are the layers of diploblastic?
Ectoderm - skin
Endoderm - Digestive Tract
What is inbetween the two layers of a diploblastic organism?
Mesoglea - jelly
What are the layers of triploblastic?
Ectoderm - Skin and nervous system
Endoderm - Gut and glands
Mesoderm - Muscles
What is true segmentation called?
Metamerism
What has Malpighian Tubules?
What are they for?
Insects
Excretory system
What is the defining characteristic of the grades?
Presence or absence of body cavity
A feritlized egg is a...
Zygote
Spiral clevage
Cells in different layers are offset form one another
Radial clevage
Cells line up side by side and on on top of another
Blastopore becomes anus...
Deuterostome
Blastopore become mouth...
Protostome
Schizocoelomate
Mesoderm splits and surrounds the inside of the body cavity
Enterocoelomate
Mesoderm pouches off and surrounds the body cavity
Determinate
At four cell stage, cell fate is determined such that any one cell would develop into 1/4 of organism
Indeterminate
At four cell stage, cell fate is not determined such that any one cell would develop into the entire organism
Three Characterisitics of Schizocoela:
Spiral
Determinate
Protostome
Three Characterisics of Enterocoela
Radial
Indeterminate
Deuterostome
What three phylum display true segmentation?
Annelida
Chordata
Anthropoda
Describe Hydrostatic skeleton
Body fluids act as support
Describe Exoskeleton
Tough support systems on the outside of the organisms
Describe Endoskeleton
Internal support systems
Describe open circulatory system
Blood does not circulate withing vessels and allows between organs into large open spaces called sinuses
What are the two types of circulatory systems?
Open and closed
What are the two types of digestive systems?
Incomplete and complete

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