02 - intro to protozoa

Question 1

don’t memorize - just to put into context

Question 2

trophozoite =

cyst =

encystation =

excystation =

Answer 2

motile feeding form

resting form

becomes cyst

leaves cyst

Question 3

(Vesicular nucleus)

some have endosome and some don’t

this is an important distinguishing feature

Question 4

(Structure)

costa =

axostyle =

Answer 4

filamentous rod like structure

clear rod like structure

Question 5

(Locomotory organelles)

(pseudopodia)

temporary locomotory organelle, powered by sol/gel transformations

Question 6

(Locomotory Organelles - Flagella)

1. central axoneme and basal sheath
2. tubule configuration?
3. anchored by what?
4. what has?

Answer 6

2. 9 + 2 microtubule configuration
3. basal body
4. mastigophora, some apicomplexa, some sarcodina

Question 7

(Locomotory organelles)

(undulating membrane)

1-2. what have this?

(cilia)

small flagellae but more numerous

Answer 7

1. mastigophora (finlike organelle associated with flagella)
2. ciliates (fused cilia associated with gullet)

Question 8

(Repro - asexual)

(binary fission)

1. longitudinal - what?
2. transverse - what?
3. nucleus or cytoplasm first?
4. vesicular nuclei and micronuclei divide how?
5. macronuclei divide how?

Answer 8

1. flagellates
2. ciliates
3. nucleus
4. mitotically
5. amitotically

Question 9

(Repro - asexual)

(multiple fission - schizogony or merogony (same thing))

1. repeated nuclear division before what?
2. what does?

Answer 9

1. cytokinesis
2. amoebas, some apicomplexa

Question 10

(repro sexual forms)

1. what is fusion of male and female gametes to form a zygote called?
2. What is it called when two ciliates join and exchange nuclear material

only what unite?

Answer 10

1. syngamy
2. conjugation

only nuclei unite

(macronuclei degenerates but micronuclei divide a number of times)