A motile male gamete of a plant such as an alga or fern or gymnosperm.
1 The antherozoid is a spirally-coiled thread of protoplasm, furnished at one end with a pair of cilia.
2 The antherozoids are attracted to the oospheres, round each of which they swarm in great numbers.
3 The oosphere is in all cases fertilized while still within the oogonium, the antherozoids being admitted by means of a pore.
4 Hence the spermatozoa and antherozoids travel in the lower aquatic animals and plants to the female, and pollen is borne to the female organ.
5 The antheridia are stalked sacs, with a single wall of cells, and the spiral antherozoids arise by free-cell formation from the cells of the interior.
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