Sexual reproduction involves the production of ascospores, commencing with the fusion of an archegonium and an antheridium, with sharing of nuclei.
12.
Phytophthora capsici produces both a male and a female type gametangia called an antheridium ( male ) and an oogonium ( female ).
13.
Oospores are made after the male gamete, antheridium, and female gamete, oogonium, undergo fertilization and then sexual recombination ( meiosis ).
14.
The sex organs are developed in pairs from the adaxial nodal cell at the upper nodes of the primary lateral branches, the oogonium being formed above the antheridium.
15.
In others the monoecious condition is complicated by the development of the antheridium before the formation of the oogonium, thus preventing fertilization by antherozoids of the same alga.
16.
The antheridium is amphigynous in the species, meaning that the antheridium may remain in this male form of the gametangia or develop into the female gametangia which is an oogonium.
17.
The antheridium is amphigynous in the species, meaning that the antheridium may remain in this male form of the gametangia or develop into the female gametangia which is an oogonium.
18.
The male organs are known as antheridia ( " sing . " antheridium ) and are enclosed by modified leaves called the perigonium ( " pl . " perigonia ).
19.
In some bryophytes, the antheridium is borne on an " "'antheridiophore " "', a stalk-like structure that carries the antheridium at its apex.
20.
In some bryophytes, the antheridium is borne on an " "'antheridiophore " "', a stalk-like structure that carries the antheridium at its apex.
