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prothallial cell Sterile cells present in the pollen grain of gymnosperms, believed to represent the last remnant of the vegetative male gametophyte thallus, which was, ancestrally, ...
An antheridium typically consists of sterile cells and spermatogenous tissue. The sterile cells may form a central support structure or surround the spermatogenous tissue as a protective jacket.
gamein, to marry + L. tangere, to touch]
The reproductive organ of bryophytes, consisting of the male antheridium and female archegonium; a multichambered jacket of sterile cells in which gametes are formed.
gamete ...
 See also: Gamete, Plant, Fungi, Gametes, Cells
  
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