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A gametangium (pl.: gametangia) is a sex organ or cell in which gametes are produced that is found in many multicellular protists, algae, fungi, and the gametophytes of plants. In contrast to gametogenesis in animals , a gametangium is a haploid structure and formation of gametes does not involve meiosis .
Under a lens, pores can be seen on the upper surface. The gametangia (sex organs) grow vertically from the thallus, the plant is dioicous so individual plants produce male or female gametangia. [1] The male gametangia are called an antheridiophores, they are short with a flat disc-like structure which is approximately 1 cm (0.39 in) wide.
The Marchantiophyta (/ m ɑːr ˌ k æ n t i ˈ ɒ f ə t ə,-oʊ ˈ f aɪ t ə / ⓘ) are a division of non-vascular land plants commonly referred to as hepatics or liverworts.Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information.
Hoosier National Forest, other agencies and volunteers are mapping where invasive plants are growing in Indiana's Charles C. Deam Wilderness.
Growth of the gametangia commences after gametangia come in contact, and plasmogamy, or the fusion of the cytoplasm, occurs. Karyogamy, which is the fusion of the nuclei, follows closely after. The zygosporangia are then diploid. Zygosporangia are typically thick-walled, highly resilient to environmental hardships, and metabolically inert.
Indiana State University is preparing to welcome alumni, students, faculty, staff and the community for its annual homecoming celebration Oct. 26. This year’s theme, 100 Years of the Blue and ...
Phytophthora cinnamomi, also known as cinnamon fungus, is a soil-borne water mould [1] that produces an infection which causes a condition in plants variously called "dieback", "root rot", or (in certain Castanea species), "ink disease".
Independent regional campuses, such as Indiana University Kokomo, are included. Indiana has several universities that meet the definition of a flagship institution, with the most commonly cited being Indiana University Bloomington and Purdue University. The Indiana state code designates the Indiana University System as the university of the ...