Biology Lecture 4_Animal Diversity at University Of Botswana | Flashcards & Summaries

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TESTE DEIN WISSEN
List the three kingdoms that resulted from multicellularity and are in th domain Eukarya
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TESTE DEIN WISSEN
Kingdom plantae
Kingdom fungi
Kingdom Animalia
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State the types of flagellate protozoan colonies
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Linear
Tree-like
Plate-like
Spherical 
Solid
Hollow
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TESTE DEIN WISSEN
What does the syncytial theory state metazoans evolved from
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TESTE DEIN WISSEN
Multinucleated(syncytial) ciliates that assumed a benthic lifestyle  
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TESTE DEIN WISSEN
How did cellularization occur in syncytial ciliates according to the Syncytial theory 
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TESTE DEIN WISSEN
By compartmentalization of the different nuclei
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TESTE DEIN WISSEN
How was the epidermis of a syncytial ciliate formed
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TESTE DEIN WISSEN
The surface nuclei were partitioned off due to the formation of cell membranes and they surrounded an inner syncytial mass just like with acoel flatworms
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TESTE DEIN WISSEN
Which two species similarities have credit to the syncytial theory?
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TESTE DEIN WISSEN
Modern ciliates and acoel flatworms 
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TESTE DEIN WISSEN
State the 5 similarities between modern ciliates and acoel flatworms that give credit to the syncytial theory 
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TESTE DEIN WISSEN
Bilateral symmetry 
Antero-posterior
Size 
Mouth location
Surface ciliation

Lösung ausblenden
TESTE DEIN WISSEN
State the drawbacks of the syncytial theory
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TESTE DEIN WISSEN
1. Suggests that triploblasty(acoelomates) is more primitive the diploblasty(coelenterates)
2. Suggests that bilateral symmetry is more primitive than radial symmetry, and fails to explain the later
3. Does not explain pricing of metazoan flagella
4.Phylogenetic analysis shows n relationship between acoelomates and multinucleated ciliates 
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TESTE DEIN WISSEN
What does the colonial theory suggests metazoans evolved from?
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TESTE DEIN WISSEN
Flagellated protists
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Who discovered the two evolution theories 
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1.Syncytial theory- hadzi (1953)
2.Colonial theory-Butschli,Lankester, Haeckel (1874)
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TESTE DEIN WISSEN
How could have flagellated protists formed multicellular organisms
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TESTE DEIN WISSEN
They could have formed a colony and as they increased they specialized in structure and functions
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Why is the colonial theory more acceptable 
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TESTE DEIN WISSEN
It agrees with the path of embryonic development 
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Q:
List the three kingdoms that resulted from multicellularity and are in th domain Eukarya
A:
Kingdom plantae
Kingdom fungi
Kingdom Animalia
Q:
State the types of flagellate protozoan colonies
A:
Linear
Tree-like
Plate-like
Spherical 
Solid
Hollow
Q:
What does the syncytial theory state metazoans evolved from
A:
Multinucleated(syncytial) ciliates that assumed a benthic lifestyle  
Q:
How did cellularization occur in syncytial ciliates according to the Syncytial theory 
A:
By compartmentalization of the different nuclei
Q:
How was the epidermis of a syncytial ciliate formed
A:
The surface nuclei were partitioned off due to the formation of cell membranes and they surrounded an inner syncytial mass just like with acoel flatworms
Mehr Karteikarten anzeigen
Q:
Which two species similarities have credit to the syncytial theory?
A:
Modern ciliates and acoel flatworms 
Q:
State the 5 similarities between modern ciliates and acoel flatworms that give credit to the syncytial theory 
A:
Bilateral symmetry 
Antero-posterior
Size 
Mouth location
Surface ciliation

Q:
State the drawbacks of the syncytial theory
A:
1. Suggests that triploblasty(acoelomates) is more primitive the diploblasty(coelenterates)
2. Suggests that bilateral symmetry is more primitive than radial symmetry, and fails to explain the later
3. Does not explain pricing of metazoan flagella
4.Phylogenetic analysis shows n relationship between acoelomates and multinucleated ciliates 
Q:
What does the colonial theory suggests metazoans evolved from?
A:
Flagellated protists
Q:
Who discovered the two evolution theories 
A:
1.Syncytial theory- hadzi (1953)
2.Colonial theory-Butschli,Lankester, Haeckel (1874)
Q:
How could have flagellated protists formed multicellular organisms
A:
They could have formed a colony and as they increased they specialized in structure and functions
Q:
Why is the colonial theory more acceptable 
A:
It agrees with the path of embryonic development 
biology lecture 4_Animal diversity

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