5. Protozoa Flashcards
1
Q
What are the four general characteristics of Protozoa?
A
- mostly unicellular (slime molds, filamentous hyphae are exceptions)
- plasmodium like body
- no cell wall - only cell membrane
- phagotrophic
2
Q
What is a plasmodium like body?
A
no define shape
amoeba
3
Q
What is the cell membrane composed of?
A
glucans
NO chitin
4
Q
Define phagotrophic
A
engulf food
5
Q
What are two phylum of protozoa?
A
- Myxomycota
2. Plasmodiophoromycota
6
Q
Give an example of Plasmodiophoromycota.
A
- Plasmodiophora brassicae
- endoparasitic slime molds
7
Q
What do Plasmodiophora brassicae cause?
A
club root of crucifers (cabbage)
8
Q
What symptoms can be observed on plants with Plasmodiophora brassicae?
A
- roots swell
- club shaped
9
Q
What is the somatic structure of Plasmodiophora brassicae?
A
- Plasmodium- multinucleate
- no shape
- single shape
- no mycelium
- single cell
10
Q
What are resting spores?
A
survival sexual spores
