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An antheridium is a haploid structure or organ producing and containing male gametes (called antherozoids or sperm). The plural form is antheridia , and a structure containing one or more antheridia is called an androecium . [ 1 ]
An archegonium (pl.: archegonia), from the Ancient Greek ἀρχή ("beginning") and γόνος ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium. The archegonium has a long neck canal or ...
The plant itself is about 85 x 5mm. [4] It is dioicous. Dioicous is defined as a plant having the male and female reproductive organs in separate individuals. An archegonium is a multicellular reproductive organ that produces female gametes. The antheridium is the male structure that holds, creates and releases sperm.
Most plants are monoecious, with both sex organs on the same plant, but some plants (even within the same species) are dioecious, with separate male and female gametophytes. The female organs are known as archegonia (singular archegonium) and the male organs are known as antheridia (singular antheridium). Both kinds of organs develop just below ...
Each antheridium develops on a long, slender stalk made up of two rows of cells. [8] Individual colonies are often multiclonal, with male and female plants growing intermixed, indicating establishment from multiple spores. While female plants are relatively common (about 49% of shoots), male plants are less frequently found (around 10% of ...
The main axis of the plant, which is upright, bears a set of spirally arranged, sessile leaves having a clearly distinguishable midrib. Sporophyte of Funaria. At the apex of the main plant axis, the antheridium is borne. This is the male part of the shoot. A lateral branch from the main plant axis bears the female shoot archegonium at its meristem.
This is a list of Anthurium species, a superdiverse genus of flowering plants from the arum family . [1] There are known to be at least 1,000 described species. [ 2 ]
Nephrolepis is a genus of about 30 species of ferns.It is the only genus in the family Nephrolepidaceae, placed in the suborder Aspleniineae (eupolypods I) of the order Polypodiales in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). [1]