prokaryotic algae

Question 1

are algae pro or euk?

Answer 1

prokaryotic

Question 2

pigments of algae

Answer 2

chlorophyll a,d,f (high plants use chloro b)
phycobilins (phycocyanin and phycoerythrin)
use these to photosynthesize and produce O2
can fix nitrogen in heterocysts

Question 3

two groups of phycobilins

Answer 3

phycocyanin (blue)
phycoerythrin (red)

Question 4

reproduction of cyanobacteria

Answer 4

no mitosis or meiosis
no flagellae but some move
recombination

Question 5

cyanobacteria mechanism of floating

Answer 5

can metabolically secrete gas to float on top of the other bacteria
can also release gas to lower themselves

Question 6

ecoloy of cyanobacteria

Answer 6

can grow in ponds, ocean, hot water

Ocean: synechococcus, common cyanobacteria in the ocean.

hot water: can live in hot springs, precipitate calcium carbonate

can form stromatolites

Question 7

noxious algal blooms cyanobacteria

Answer 7

nostoc, anabaena, microcystis
can be toxic

Question 8

rice fields cyanobac

Answer 8

cyanobacteria can fertilize rice fields

Question 9

symbionts of cyanobacteria

Answer 9

cyanobacteria common as symbionts: such as living on lichen, anemones, sponges, snails, cycads, and azola fern

Question 10

prochlorophytes characteristics

Answer 10

chorophyll a, b
NO phycobilins.
NO phycocyanins
makes up major amount of photosynthesis in ocean