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12 Cards in this Set

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