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12 Cards in this Set
- Front
- Back
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Heterotrophs with flagella: two major phyla:
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1. phylum Sacromastigophora
2. phylum Ciliophora |
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Phylum Sarcomastigophora has three characteristics:
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1. diverse group, all have a single kind of nucleus
2. unicellular heterotrophs 3. use flagella and/or pseudopodia |
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Phylum Sarcomastigophora: emphasis on Class Zoomastigophora (3):
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1. freeliving and parasites
2. asexual reproductions 3. live in termites |
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one order in Zoomastigophora is choanoflagellates, the group from which sponges and ....
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probably all animals arose
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some trypanosomes are parasites of ?
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humans and domestic animals
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African sleeping sickness (caused by trypanosoma)
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carried by host biting fly;
affects cattle/livestock in Africa |
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Leishmaniasis (caused by Leishmania)
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carried to new host by biting fly in tropical areas; causes sores and erosion of skin
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"hiker's diarrhea" (caused by Giadaria lamblia)
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infects humans and other animals, freshwater, causes nausea, cramps, diarrhea
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Phylum Ciliphora has 7 characteristics:
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1. unicellular (big, complex)
2. most w/ many cilia 3. pellicle of tough protein 4. vacuoles for ingestion 5. TWO TYPES OF NUCLEI: macro/micronuclei 6. sexual repro = conjugation 7. example: paramecium |
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a micronuclei is...
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a diploid chromosome, for sexual reproduction
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a macronuclei is...
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derived from micronuclei, multiple copies of small strands of DNA for metabolic, synthetic and developmental functions
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conjugation is ...
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two different mating types; partners exchange haploid micronuclei that will fuse to make diploid micronuclei
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