Dinoflagellata - Miozoa Flashcards
Dinoflagellata
pigments, storage products, cell wall, flagella
what type of Dinoflagellate?
Desmokont
what type of Dinoflagellate?
Dinokont
what is that?
transverse flagellum in Dinokonts
which flagella girls cell? what about the hair?
- transverse flagella
- single row of hairs, lateral
do Dinoflagellates have eyespots?
yes
- extraplastid in cytoplasma
- chlorplastic within chloroplast
what’s that structure?
- pusules
- organelle
- invaginations of plasmalemma
- osmoregulation
what’s that? what for? where?
- trichocyst = protein structure
- on cell surface
- can discharge for rapid movement to escape
unusual features in Dinoflagellata
name of cell wall in Dinoflagellates
- they have no cell wall
- but beneath plasmalemma: theca
if 2 large plates are at the apical end of a Dinoflagellate, then it is a ?
Desmokont
what’s that? how do I know?
- Desmokont
- 2 large plates are at the apical end
- 2 flagella at apical end
what’s that? how do I know?
- Desmokont
- 2 large plates are at the apical end
- 2 flagella at apical end
how can Theca be in Dinokonts?
left? right?
describe
what’s that?
- thecal plates
- separated by ribs
- perforated by pores
- connected by intercalary bands
describe the different components.
what type?
what’s that?
- dinokont
- left: ventral view
- right: dorsal view
dinokonts
- easy to identify
1. high number of pores
2. 2 horns
dinokont
dinokont with presence of several horns
dinokont with presence of several horns
what is that? why important
- tabulation
- diff. arrangements of thecal plates
important for taxonomy and differentiation
what does arrow show?
- pellicle
- layer underneath the theca plates
what looks like that?
- nuclues in dinoflagellata
what are chloroplasts like in smaller Dinoflagellates?
parietal and plate-like
what are chloroplasts like in larger Dinoflagellates?
radially and elongates
thylakoids in dinoflagellates?
- stacked in 3 lamellae
- NO girdle lamella
how many membranes do their chloroplasts have?
3 parallel membranes
pyrenoids in dinoflagellates
- can be within thylakoidal membrane
- or located in outer part of chloroplast
what’s that?
“Some dinoflagellates that during the day produce blooms noticeable by red colour, can be evident at night ______ “ how?
making the sea glow for their bioluminescence
why is that a problem?
many species have capability to produce toxins
