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Carposporangium of a red algea

Legend:

1  thallus
3  carposporophyte
4  carpospores
2  pericarp

English name:
Scientific name: Polysiphonia sp.
Familia: Rhodomelaceae
Classis: Rhodophyceae
Phylum: Rhodophyta
Regnum: Protista

Carposporangium of a red algea: A carpospore and B carposporangium. The female gametophyte forms carpogonia in which an egg cell is present. After fertilization by a spermatium the zygotes develops to a carposporophyte that forms carposporangia containing carpospores.