In this article we will discuss about the asexual and sexual reproduction of rhizopus. Asexual Reproduction of Rhizopus: 1. It takes place by spores formed in the sporangium. 2. A single sporangium develops at the tip of long, erect sporangiophore. 3. A dome-shaped columella (Fig. 77) is present in each sporangium. The protoplast of columella is in continuation with that [...]
In this article we will discuss about the asexual and sexual reproductive structure of pythium. Asexual Reproduction of Pythium: 1. It takes place by means of zoospores formed in small, globular or oval, multinucleate zoosporangia. 2. A zoosporangium is present singly and terminally (Fig. 61A) or intercalary (Fig. 61B) on the sporangiophore and remains separated from rest of the thallus [...]
In this article we will discuss about the features and significance of oomycetes. Salient Features of Oomycetes: Oomycetes contain 74 genera with 580 species. The members of the class Oomycetes are characterized by the oogamous type of sexual reproduction and the presence of biflagellate zoospores which lack cell wall. The gametes are non-flagellate. The members of the class are typically [...]