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Zoology Lab Practical
OSU lab practical 1
75
Veterinary Medicine
Undergraduate 2
02/03/2012

Additional Veterinary Medicine Flashcards

 


 

Cards

Term
What is the main function of the contractile vacuole?
Definition
it rids the ameba of excess water
Term
how does the ameoba breathe?
Definition
through diffusion
Term
how does a ameoba reproduce?
Definition
asexually by binary fission 
Term

Observed Specimen:

 

Ameoba

Definition
[image]
Term

Observed Specimen:

 

Phylum Euglenozoa

Definition
[image]
Term
How do euglenids obtain nutrients?
Definition

it is holophytic, meaning through photosynthesis. 

 

makes nutrients from CO2 and H2O with the aid of chlorophyll and sunlight

Term
Trypansoma
Definition

a genus of zooflagellates that are parasites living in the blood or other tissues in vertebrates

 

lack a chlorophyll

Term

Observed Specimen:

 

Trypanosoma

Definition
[image]
Term
How must Trypanosoma organisms obtain their nutrients?
Definition

obtains nutrients from the environment

 

obsorbs nutrients from the blood or other body fluid

Term
Parts of the Trypansoma
Definition
[image]
Term
Amoeba
Definition
  • Higher taxonomic status uncertain
  • order: Euamoebida
  • Species: Amoeba proteus
Term
Parts of the Amoeba
Definition
[image]
Term
Features of the Amoeba identifiable in lab
Definition
  • Food vacuoles- could easily be seen as they have  darker coloring than the cytoplasm around them (particles of food enclosed in a membrane)
  • Contractile vacuole- a clear bubble containing no particles. (used for osmorequlation; it expels excess water taken in during phagocytosis)
  • Nucleus- darker than its surroundings although not usually as dark as the food vacuoles (control center of the cell; membrane bound DNA)
  • Pseudopodia- long extensions that can be seen reacching or retracting (used for locomotion and increasing surface area)
Term
Euglena
Definition
  • Phylum: Euglenozoa
  • Subphylum: Euglenida
  • Class: Euglenoidea
  • Genus & Species: Euglena gracilis (or Euglena viridis)
Term

Observed Specimen:

 

Euglena

Definition
[image]
Term

Observed Specimen

 

Euglena Slide 2

Definition
[image]
Term
Parts of the Euglena
Definition
[image]
Term
Features of the Euglena identifiable on slide
Definition
  • Nucleus
  • Chloroplasts: used to synthesize food making them autotrophic- (looks like intestines running through the specimen)
  • Contractile vacuoles- only sometimes
  • Stigma- "eyespot"- a reddish spot that is thought to be light sensitive
  • Flagellum: a long, spindly projectiong out of the anterior end of the specimen that is used for locomotion 
Term

Observed Specimen:

 

Trypansoma

Definition
[image]
Term
Trypansoma Labled Parts 1 
Definition
[image]
Term
Trypansoma Labled Parts 2
Definition
[image]
Term
Trypanosoma
Definition
  • Phylum: Euglenozoa
  • Subphylum: Kinetoplasta
  • Class: Tranosomatidea
  • Genus: Trypanosoma
causes sleeping sickness: Trypanosoma brucei
Term
Features of the Trypanosoma seen from slide
Definition
  • flagellum
  • nucleus
  • kinetoplast: a small body of material aside from the nucleus and at the base of the flagellum
  • undulating membrane: an extension of the flagellum along the length of the cell membrane
Term

Observed Specimen:

 

Plasmodium

Definition
[image]
Term

Observed Specimen:

 

Pasmodium 2

Definition
[image]
Term
Plasmodium
Definition
  • Phylum: Apicomplexa
  • Class: Coccidea
  • Order: Eucoccidia
  • Family: Plasmodiidea
  • Genus: Plasmodium
They are the cause of Malaria
Term
Plasmodium seen from Slide
Definition
  • the only organisms we saw were inside of red blood cells
Term

Observed Specimen:

 

Paramecium

Definition
[image]
Term
Paramecium
Definition
  • Phylum: Ciliophora
  • Class: Oligohymenophorea
  • subclass: Hymenostomatia
  • Genus: Paramecium
Term
Paramecium as seen from slide
Definition
  • cilia: used for locomotion
  • macronucleus: the larger of two nuclei found ciliates
  • pellicle: a harder membrane outside the plasma membrane
  • food vacules: membrane-bound sacs of food
  • Oral groove: mouth like area made for the drawing in of nutrients
Term
Parts of the Paramecium
Definition
[image]
Term
Stentor
Definition
phylum Ciliphora
Term
observed Stentor
Definition
[image]
Term
Parts of the Scypha
Definition
[image]
Term

Observed Specimen:

 

Scypha

Definition
[image]
Term
Scypha
Definition

Phylum: Porifera

Class: Calcarea

Genus: Scypha

Term
Parts of Scypha identifiable from slides
Definition
  • Apopyles: Small pores that opens from the radial canals into the spongeocoel
  • Canals
  • Choancytes: lines the radial canals: seen with high powered lens 
  • incurrent canals: open up to the exterior
  • osculum: large opening opposite the base of the sponge
  • Dermal Ostium: where the incurrent canals open to the exterior
  • Radial Canals: the canal system throughout the sponge
  • spongeocoel: large interior opening of the sponge
Term
Sycon 
Definition
  • phylum: Porifera
  • class: Calcarea
  • Order: Heterocoela
  • Genus: Sycon
  • recognized by syconoid sponge type
Term
Parts of the Sycon
Definition
[image]
Term
Leucosolenia
Definition
asconoid body type
Term
Parts of the Leucosolenia
Definition
[image]
Term
asconoid body type
Definition
[image]
Term
Commerical Bath Sponge- Leuconoid Body Type
Definition
[image]
Term
Hydra
Definition
  • phylum: Cnidaria
  • Class: Hydrazoa
  • order: hydroida
  • SubOrder: Anthomedusa
  • Genus: Hydra
Term
parts of the Hydra seen from the slide
Definition
  • hypostome: the elevated area surrounded by tentacles
  • tentacles
  • Gastrovascular cavity: where digestion occurs for hydra
Term
microscope hydra 1
Definition
[image]
Term
microscope hydra 2
Definition
[image]
Term
Obelia 
Definition
  • phylum: Cnidaria
  • Class: hydrozoa
  • order: hydroida
  • Suborder: Leptomedusae
  • Genus: Obelia
Term
parts of the Obelia seen from slide
Definition
  • hydranth: nutriitive polyps
  • Gonagium: reproductive polyps
  • Tentacles
  • Hypostome
  • Medusa Buds: seen within the gonania; become free-swimming medusae
Term
parts of the obelia 1
Definition
[image]
Term
parts of the obelia 2
Definition
[image]
Term
The defining characteristics between the Obelia and Pennaria are that...
Definition
  • the ennaria colonies grow off of one side of the stalk while Obelia grow in many directions
  • In the Obelia the ganagium is segmented unlinke the Pennaria
Term

Observed Specimen:

 

Pennaria

Definition
[image]
Term
Pennaria
Definition
  • phylum: Cnidaria
  • Class: Hydrozoa
  • Order: Anthoathecatae
  • SubordeR: Capitata
  • Genus: Pennaria 
Term
Parts of the Pennaria as seen from Slide
Definition
  • Hydranth
  • Ganagium
  • Coenosarc- a hallow tube composed of epidermis, mesolea, and a gastrodermis
  • Perisarc- a thin protective case around the colony
Term
Aurelia
Definition
  • Phylum: Cnidaria
  • Class: Scyphozoa
  • Order: Semaeostomege
  • Family: Ulmaridae
  • Genus and Species: Aurelia aurita
Term
Parts of the Aurelia 
Definition
[image]
Term
Aurelia microscope
Definition
[image]
Term
Metrodium (sea anemone)
Definition
  • Phylum: Cnidaria
  • Class: Anthozoa
  • Subclass: Hexacorallia
  • Order: Actiniaria
  • Genus and Species: Metridium senile
Term
Metridium preserved specimen
Definition
[image]
Term
Always focus by _____ the distance between the stage and the objective lens.
Definition
increasing
Term
Never use the coarse focus adjustment with ________ power lenses.
Definition
high objective
Term
In an animal with bilateral symmetry, which type of plane divides the animal into right and left halves?
Definition
sagital plane
Term
Which sponge body type does not have a spongocoel?
Definition
Leuconoid
Term
Which spondge body type has ore than one osculum?
Definition
Leuconoid
Term
Where do choanocytes occur in each sponge body type?
Definition

Asconoia: Spongocoel

Synconoid: Radial Chamber

Leuconoid: Flagellated Chamber

Term
What class belonging to the phylum cnidaria is characterized by having no medusa stage?
Definition
Class Anthozoa
Term
What is a pseudopodia
Definition
extensions of the cell body that help it move
Term
What are two structures of the genus Trypanosoma?
Definition
Nucleus, Flagella
Term
What disease does the genus Plasmodium cause?
Definition
Malaria
Term
What is the function of the pellicle int he Paramecium?
Definition
provides rigidity and fast movement
Term
How does a Stentor Feed?
Definition

food particles are formed after they are sept in by the cillia

 

filter feeds

Term
What structure or features do all protozoans share in common?
Definition

they are all eukaryotes and a nucleus

 

  • absense  of a cell wall
  • presense of at least one motile stage of life. 
Term

label each organism as flagellated, amoeboid, spore-forming or ciliated

 

  • Euglena
  • Tranosoma
  • Plasmodium
  • Paramecium
  • Stentor
  • Amoeba
Definition
  • Euglena: Flagellated
  • trypanosoma: Flagellated
  • Plasmodium: Spore-forming
  • Paramecium: ciliated
  • Stentor: ciliated
  • Amoeba: amoeboid
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