Download - ALGAE
ALGAE
Plants thriving in water
GREEN ALGAE
SPYROGYRA
- POPULATING THE PONDS
RED ALGAE
- SOURCE OF AGAR
BROWN ALGAE
- SOURCE OF ALGIN
BLUE GREEN ALGAE
PLANTS THAT SWIM
- CHLAMYDOMONAS
OSCILLATARIA
AN EXCEPTONAL
BEAUTY
- PEDIASTRUM
THALLUS
FRAGMENTATION
FORMATION OF
DAUGHTER COLONIES
……IN VOLVOX
ZOOSPORE FORMATION
…..IN ULOTRIX
CHLAMIDOMONAS
ISOGAMY IN SPIROGYRA
DIFFERENT STAGES
• A. Resting filaments of alga cells.• B. Formation of conjugation tubes between two
adjacent filaments.• C. Cytoplasmic contents of each cell form a
compact mass, representing an isogamete. The isogametes from one filament migrate through the conjugation tubes into the adjacent filament.
• D. The two isogametes unite to form a zygote. Each zygote eventually undergoes meiosis to form four haploid cells. One haploid cell will form a new filament by mitosis, the other three degenerate.
CONJUGAL TUBES
HETEROGAMY
HETEROGAMY IN OEDOGONIUM
CHLORELLA
- YIELDS CHLORELLIN
AGAR
- MEDICINE FROM RED ALGAE
FROM BROWN ALGAE
KELP
- A RICH SOURCE OF IODINE
NOSTOC AND…
… ANABAENA
- NITROGEN FIXATION
SEA WEEDS….
….AS MANURE
CHONDRUS
- USED IN PUDDINGS AND
JELLIES
CHLORELLA
- RICH IN PROTEINS AND VITAMINS
- A CHINESE DELICACY
LAMINARIA
- FODDER