DIVISION RHODOPHYTA 

1.    MOSTLY MARINE

2.    MICROSCOPIC FILAMENTOUS AND LEAFY MACROSCOPIC

3.    CONTAIN PHYCOBILINS

      PHYCOBILINS ABSORB BLUE LIGHT

4.    LACK FLAGELLATED CELLS

5.    CORALLIN ALGA PART OF CORAL REEFS

      CONTAIN CALCIUM AND MAGMESIUM CARB ONATE

UNICELLULAR RED ALGAE

 PORHRIDIUM

 1.    LACKS A CELL WALL
 2.  HAS A STAR SHAPED CHLOROPLAST
 3.    GROWS ON MOIST SOIL IN GREENHOUSES
 4.    REPRODUCTION IS ASEXUAL

MULTICELLULAR RED ALGAE

      POLYSIPHONIA

 1.  HAS A THREE STAGE LIFE CYCLE

 DIVISION CHRYSOPHYTA

 DIATOMS, GOLDEN-BROWN AND YELLOW-GREEN ALGAE

 1.    LARGEST DIVISION OF ALGAE

       DIATOMS 10,000 SPECIES

       a.  UNICELLULAR
           b.  LACK FLAGELLAE
       c.  HAVE A GLASS CASE ENCLOSING THE CELL

2.    SEXUAL REPRODUCTION BY ISOGAMY, ANISOGAMY
         OR OOGAMY

 DIVISIONS OF UNICELLULAR ALGAE

 EUGLENOPHYTA EUGLENOIDS

 1.  CHL A, B, AND CAROTENOIDS

 2.  PELLICLE INSTEAD OF A CELL WALL.

     A PELLICLE IS A MEMBRANE WITH AN INNER
      LAYER OF PROTEIN

 PYRRHOPHYTA DINOFLAGELLATES

1.  CHL C
2.  LACK A CELL WALL BUT HAVE CELLULOSE
PLATES EXTERIOR
    TO THE CELL MEMBRANE

CRYPTOPHYTA CRYPTOMONADS

1. CHL C
2. PELLICLE INSTEAD OF A CELL WALL

ALL OF THESE DIVISIONS HAVE:

1. PLANT-LIKE AND ANIMAL-LIKE REPRESENTATIVES
2. MAINLY ASEXUAL REPRODUCTION

ORIGINS OF ALGAE

 UNKNOWN ANCESTOR CONTAINING CHL A
 

CHL B          PHYCOBILINS          CHL C

 

LAND PLANTS     RED ALGAE          BROWN ALGAE

GREEN ALGAE      CRYPTOMONADS      CRYSOPHYTES

EUGLENOIDS                         DINOFLAGELL.

 ECOLOGY OF ALGAE

 CAN EXPLOIT MANY HABITATS

  MARINE
   FRESHWATER
   TERRESTRIAL

          WOOD

    ROCK

    SOIL

 

       UNUSUAL

 

CLOUDS

    SNOWBANKS

    SYMBIOTICALLY WITH FUNGI TO FORM LICHEN