archegonium (pl. archegonia) The multicellular flask-shaped female sex organ of bryophytes, clubmosses, horsetails, ferns, and many gymnosperms. Such plants are described as archegoniate to distinguish them from algae, which do not possess archegonia. The dilated base, the venter, contains the oosphere (female gamete). The cells of the narrow neck liquefy to allow the male gametes to swim towards the oosphere. The archegonium is thus an adaptation to the terrestrial environment as it provides a means for the male gametes to reach the female gamete. Compare antheridium.
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gynandromorph , gynandromorph An animal that possesses both male and female characteristics because it is genetically a mosaic, i.e. some of its cells are geneticall… carpogonium , carpogonium (pl. carpogonia) The female gametangium of the red algae (see Rhodophyta). Carpogonia, which are found at the tips of the female gametoph… Male , male 1. Denoting the gamete (sex cell) that, during sexual reproduction, fuses with a female gamete in the process of fertilization. Male gametes are… Dioecious Plant , dioecious Possessing male and female flowers or other reproductive organs on separate, unisexual, individual plants. See also ANDROECIUM; Compare MON… gonad , gonad •ad, add, Allahabad, bad, Baghdad, bedad, begad, cad, Chad, clad, dad, egad, fad, forbade, gad, glad, grad, had, jihad, lad, mad, pad, plaid, r… Behavior , Amphibians are not by nature especially social creatures. Most live solitary lives, and even when they form temporary aggregations, they tend to igno…
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