stramenopila pt.1

Question 1

What are Stramenopila?

Answer 1

the s part of the supergroup SAR

Question 2

what is the history of the Stramenopila?

Answer 2

PROB

-> started autotrophic, then lost it, then SOME regained it (ie the diacomns and brown algae)

Question 3

Photosynthesit Stramenopila chloroplats are

Answer 3

2ndary capture from red algea (chlorophyll a and c)

Question 4

Synapamorphies of Stramenopila

Answer 4

1) 2ndary capture

2) biflagellate } 1 tinsle, 1 wiplash. Some have 1 so small looks monoflagilated

Question 5

What is diatom?

Answer 5

• > photosynthetic
• > phytoplankten
• > pigment: a c and carotinoids
• > flagila in sperm only

Question 6

diatom structure

Answer 6

THINK BOX

• > in a glass silica box
• –> top epithica, bottom hypothica
• > have many holes/valves

Question 7

diatom reproduction

Answer 7

ASEXUAL
-> Box separated through binary fission and becomes top box. Means half of new ones keep getting smaller and smaller
SEXUAL
-> with stress (not commin in env). throuhg meisois one sperm one egg, fuse and make a new thica glass houe

Question 8

Chrysphyta

Answer 8

golden brown algea

• > Pigment: a, c and FUXANTHIN
• > has both flagella
• > mostly in fresh water

Question 9

Phaeophyta

Answer 9

brown algea

• > Pigment: a, c and FUXANTHIN (lots)
• > no silica
• > almost all marine species

Question 10

LC of ectocarpales

Answer 10

Isomorphic alternation of gen

• > asexual, with pluroculus sporangia (many compartments) to make zoospore
• > SEX
• —> sporangia is uniculors and produces meiospores that make a m or f gametophyte, which makes the isogamous gamets

Question 11

LC of laminaria

Answer 11

KELP and seaweed, heteromorphic

• > on blades sporothallus akes meiospors that make 2 (m/f) gametophytes, which make oogamous gametes.
• > gametophyte often on seaweed