| On their release from the antheridia, the antherozoids must then swim through surface water to fertilize neighbouring egg cells. |
| Each antheridial chamber incorporates several antheridia, all of which are developed from one antheridial initial. |
| Since the asexual gametophyte does not form antheridia or archegonia, crosses to confirm its genotype could not be performed. |
| In the rotting tissues branches of the older mycelium similarly swell up and form antheridia and oogonia. |
| Numerous antherozoids are produced in the antheridia and they swim through the covering film of water to reach the archegonia, each of which contains a single egg cell. |
| Notwithstanding their general similarity, the archegonia of mosses differ externally from antheridia in having a longer neck and longer stalk. |
