The basic ideas for this lecture are indicated in the table below. Many slides of examples are shown in the lecture. The rockweed is a diploid sporophyte. Conceptacles at end of thallus contain sporangia.
Sporophytes are either heterothallic or homothallic depending on species.
Sporangia contain diploid sporocytes. Sporocytes undergo meiosis to make spores. Alga is oogamous. This brown algal organism consists of a filamentous thallus. Its lifecycle is perhaps more typical of the brown algae.