SAR clade

Question 1

SAR

Answer 1

stramenopiles, alveotes, and rhizarians

Question 2

stramenopiles- diatoms (organism type, cell wall, major component of what…, found in…. what happens when they die

Answer 2

1. unicellular algae
2. unique 2-part glass-like wall of silicon dioxide (for protection)
3. phytoplankton
4. highly diverse (found in ocean, lakes)
5. as they die and fall into ocean, co2 is pumped to floor- carbon sink

Question 3

stramenopiles- golden algae

Answer 3

brown and yellow carotenoids
simple structure
mostly colonies of unicellular organisms

Question 4

stramenopiles- brown algae

Answer 4

complex large multicellular structures
ex: kelps and giant seaweed

includes holdfest anchors, stipe support, leaflike blades

Question 5

alveotes

Answer 5

membrane bound sacs (alveoli)
function is unkown

Question 6

alveolates- dinoflagellates

Answer 6

body made of cellulose armour
ex- phytoplankton
half are strict heterotrophs
blooms (explosive growth)- results in red tide

toxins produced by dinoflagellates causes massive kills of invertebrates and fishes

Question 7

alveolates- cilates

Answer 7

use cilia to move and feed
mostly predators (heterotrophs)
large and small nuclei (within 1 cell)
binary fission

Question 8

alveolates- apicomplexans

Answer 8

nearly all parasitic
retained plastids (analogous trait) but dont use them

ex: plasmodium- malaria: complex life cycles with multiple host- asexual/or sexual phases

Question 9

rhizaria
amoebas- pseudopodia

Answer 9

cytoplasm streaming

a temporary arm-like projection of a eukaryotic cell membrane that is emerged in the direction of movement.