Antheridium

Antheridium

The term antheridium (which comes from the Greek γαμέτης “spouse” and ἀγγεῖον “recipient”) means, in botany, the male sexual apparatus (gametangium) of the Thalophytes, Bryophytes, Pteridophytes and some fungi; inside the antheridium, male gametes (anterozoa) are formed which, provided with cilia and flagella, are able to move to reach and fertilize the female gamete (oosphere) contained in the archegonium.
Antheridium is a male sexual apparatus of various plants, consisting of a single cell, in the Thalophytes, or of several cells in the Bryophytes and Pteridophytes.
Anterozoa are cells which, by chemo-tactic stimulus, set out in search of the female gamete, to fertilize it.