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Advances in Experimental Medicine and Biology. Some red algae , such as Polysiphonia , produce non-motile spermatia that are spread by water currents after their release. Retrieved from " https: Further information:

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This page was last edited on 14 December , at Each pollen grain contains a spermatogenous generative cell. From Wikipedia, the free encyclopedia. Fungal Genetics and Biology.

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The sperm nuclei reach the eggs through fertilization tubes, similar to the pollen tube mechanism in plants. Conidia are spores that germinate independently of fertilization, whereas spermatia are gametes that are required for fertilization. The mature sperm cell spermatozoa is 0. This success mainly comes from the reputation of Danish sperm donors for being of high quality [19] and, in contrast with the law in the other Nordic countries, gives donors the choice of being either anonymous or non-anonymous to the receiving couple.