Gynoecium: - The gynoecium (from Ancient Greek ????, gyne, substance woman, and ?????, oikos, meaning house) is a bound with several meanings in botanical usage. In reference to mosses, liverworts and hornworts,gynoecium refers to a cluster of archegonia and any associated modified leaves or stems present on agametophyte shoot. More commonly, gynoecium refers to the ovule-producing part of a flower. The gynoecium is typically the innermost roster of structures in a flower and is surrounded (in perfect flowers) by the androecium (stamens) and (in complete flowers) by the perianth (petals and sepals). The gynoecium is often inaccurately [clarification needed] referred to as female because it concords rise to female (egg-producing) gametophytes.[1]
The structural unit that comprises the gynoecium is the carpel. A gynoecium whitethorn consist of a single carpel, multiple evident (unfused) carpels or multiple connate (fused) carpels. Flowers that bear a gynoecium just no androecium are called carpellate. Flowers lacking a gynoecium are called staminate.
Gynoecia give rise to and protect ovules (within one or more ovaries). When mature, gynoecia may function to attract pollinators (through nectaries or visual cues).
Gynoecia receive pollen on their surface (usually on a stigma), in some cases actively selecting genetically different pollen so as to promote taboo crossing. Gynoecia may facilitate pollen tube growth to the ovule and delivery of the sperm cell to the egg. The gynoecium forms the pericarp of fruit.
Androecium: - The stamen (plural stamina or stamens, from Latin stamen meaning swan of the warp) is the male reproductive organ of a flower. apiece stamen generally has a stalk called the filament (from Latin filum, meaning thread), and, on top of the filament, an anther (from Ancient Greek anthera, feminine of antheros flowery, from anthos flower), and pollen sacs, called microsporangia. The development of the microsporangia and the contained haploid...If you want to get a liberal essay, order it on our website: Ordercustompaper.com
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