eukaryotic algae

Question 2

green algae

Answer 2

• unicellular, filaments, sheets, colonies, spheres, stars
• freshwater algae, marine, wet films, symbionts
• chlorophyll a,b,carotenoids
• store food as starch
• cell walls made from cellulose
• can be sexual and asexual

Question 3

unicellular green algae

Answer 3

• chlamydomonas, chlorella:
  eye spot
• desmids
  freshwater, star-shaped
• acetabularia
  mermaid’s wine glass
  one cell two inches long
  nucleus in the base

Question 4

filamentous green algae

Answer 4

• spirogyra
  spiral shaped chloroplast
  floats in freshwater
• oedogonium
  lumps with reproducing cells
• hydrodictyon
  makes a network in water

Question 5

colonial (multicellular) algae

Answer 5

• ulva
• volvox
  ball of many cells, some are photosynthesizing others are reproducing

Question 6

coenocytic algae

Answer 6

multinucleate but all one cell

• codium (dead mans fingers)

Question 7

phylum chromophyta/kingdom stramenopila

Answer 7

• chorophyll a and carotneoids
• xanthophylls
• store food as oil or carbohydrate laminarin
• hairlike projections on flagellum

Question 8

xanthophyceae (yellow green algae) characteristics

Answer 8

freshwater unicells

flagellae point opposite direction

Question 9

chrysiohyceae (golden brown algae) characteristics

Question 10

bacillariophyceae diatoms characteristics

Answer 10

unicellular, diploid
centric, pennate
frustule (cell wall) composed of pectins with silica
cell division: cell gets smaller each division
chlorophylls a, c , fucoxanthin

Question 11

ecology of bacillariophyceae (diatoms)

Answer 11

primary producer
oil stores
diatomaceous earth

Question 12

phaeophyceae (brown algae) characteristics

Answer 12

multicelluar, diploid
holdfast, stipe, blade
fucoxanthin

Question 13

example of phaeophyceae (brown algae)

Answer 13

laminaria

nereocystis (bull kelp)

fucus (rockweed): tip of thallus fills with gelatinous material, full of pores, opens into chambers (concepticles). Gametangia located here, oogonium 8 eggs which all survive. Antheridia… 64 sperm which all survive…. no alt of generation

sargassum: can easily break loose and float indefinitely

Question 14

products made from phaeophyceae (brown alga)

Answer 14

algin… makes ice cream and food products smooth

Question 15

phylum rhodophyta (red alga) characteristics

Answer 15

multicellular seaweed
filamentous or packed into thalli
complexl ife cycles
chlorophylls a,d,phycobilins
storage product = floridean starch
agar, caragheenan

Question 16

phylum euglenophyta

Answer 16

euglenas

Question 17

phylum euglenophyta characteristics

Answer 17

elogated unicell with flexible pellicle
food groove
chloroplasts or not
one flagellum has hair fringe, other has eyespot
no sexual reproduction has been found

Question 18

phylum euglenophyta ecology

Answer 18

common in very polluted water
sewage, runoff from barns

Question 19

phylum dinophyta

Answer 19

dinoflagellates

Question 20

phlym dinophyta characteristics

Answer 20

planktonic unicell
covered with cellulose plates
two flagellae , one drive forward, other to spin
many have chlorophylls: a, c; xanthophylls
lots of condensed DNA, much more DNA than avg
bioluminescent

Question 21

phlum dinophyta ecology

Answer 21

warm marine
red tides… produce neurotoxins

Question 22

phylum prymnesiophyta

Answer 22

haptophytes

Question 23

phlym prymnesiophyta characteristics

Answer 23

small unicells with 3 flagellates
3rd flagellum = for food capture (one is haptonema = sticky, can trap food)
chromophyte pigments: chlorophyll a, carotenoids, xanthophylls
most covered with calcified plates

Question 24

phylum prymnesiophyta ecology

Answer 24

planktonic marine
tropical primary waters

Question 25

phylum charophyta

Answer 25

stonewarts

Question 26

phylum charophyta characteristics

Answer 26

slender stalk with whorls of branches
green algal pigments: chlorophylls a,b,carotenoids
often calcified surfaces

Question 27

phylumm charophyta ecology

Answer 27

mostly lakes and ponds