The Eden Organism

Higher Algae

The basic ideas for this lecture are indicated in the table below. Many slides of examples are shown in the lecture. A few simple life cycles in the green algae were a primary focus. These represent the "root" of Kingdom Plantae, so we might think of them as the "Eden" organisms. There is a current hypothesis pointing to Coleochaete as an example of what might have been the common ancestor shared between the algae and true plants.

The life cycle of Chlamydomonas

This organism consists of single cells.

The life cycle of Oedogonium

This organism consists of filaments.

The life cycle of Ulva

This organism consists of sheets of parenchyma.

The life cycle of Codium

This organism consists of a multinucleate siphonaceousous thallus.

 Green Algae
KindomPlantae?
DivisionChlorophyta
NucleusEukaryotic
WallPectin
Cellulose
Pigments Chlorophyll A
Chlorophyll B
ß-carotene
Xanthophyll
Storage MaterialStarch
FormsUnicellular
Colonial
Filamentous
Parenchymatous
Asexual Reproductionmitosis
Zoospores
Sexual ReproductionYes
Special Notes:FW Production
Most like land plants