- oogamete by Lillian Reed
N. A female gamete, especially the larger of two gametes produced by an oogamous species.
- oogonium by Jesus Riley
... botany) The unisexual female sex organ in oogamous algae and fungi.(histology) A descendant of a primary germ cell which develops into an oocyte.
- Cyclosporophyceae by Great Soviet Encyclopedia
... phase. Reproduction is oogamous. Longitudinal growth is effected by one or more apical cells, and latitudinal growth by the division of the outer layer of cells. Chloroplasts in the vegetative cells have no pyrenoids. The reproductive organs are formed in conceptacles.The class includes 37 genera, embracing approximately 450 species. The algae are widely ...
- Egg Cell by Great Soviet Encyclopedia
... certain algae and fungi (in oogamous species it is formed in the oogonia). In bryophytes, Lycopodiales, and gymnosperms the egg cell originates in the archegonia; in angiosperms it is a component of the egg apparatus of the embryo sac.The shape and size of the egg cell vary in different plants. The egg cell is considerably larger than the sperm. There is a vacuole ...
- Brown Algae by Great Soviet Encyclopedia
... isogamous, heterogamous, or oogamous. The pear-shaped spores and gametes, usually with one eyelet, have two flagella on the side, one directed forward and one backward.Brown algae are divided into three classes: Aplanosporophyceae (only Dictyotaceae), Phaeosporophyceae (heterogeneratae and isogeneratae, except for Dictyotaceae), and Cyclosporophyceae (Cyclosporeae ...