male gametophyte

Listing 11 - 20 from 32 for male gametophyte

The Cycad Pages
... (pollen-sacs) on the undersurface. Microsporangia opening by slits. Pollen cymbiform, monosulcate. Male cones stalked, ovoid. Megasporophylls: spirally orthostichous, aggregated into female cones. Sporophylls simple, ... with a white aging to purple sarcotesta. Endosperm haploid, derived from the female gametophyte. Embryo straight; with 2 cotyledons that are usually united at the tips ...
plantnet.rbgsyd.nsw.gov.au

Glossary
... meters of growth per hectare (cubic feet of growth per acre). Megagametophyte- The female gametophyte which develops from the megaspore and produces the female gamete(s). Megasporangium- The sporangium ... . Microspore- A haploid spore produced by meiosis of the microsporocyte and developing into the male gametophyte. The pollen grain of seed plants. Mine spoil- Earth and rock excavated from a ...
www.na.fs.fed.us

www.seaweed.ie
... gametophyte is undifferentiated and is filamentous and creeping. Sexual reproduction is oogamous; antherozoids (male gametes) are produced by a male gametophyte and eggs are produced in oogonia by the female gametophyte ...
www.seaweed.ie

UCMP Glossary: Botany
... smaller kind of spore is called a microspore; it usually germinates into a male (sperm-producing) gametophyte. Contrast with megaspore. mycorrhizae -- Symbiotic association between a fungus and the roots ... tube -- In seed plants, the extension of the male gametophyte as it emerges from the pollen grain in search of the female gametophyte. pollination -- Process of transferring the pollen from its ...
www.ucmp.berkeley.edu

The Earliest Land Plants
... The exquisit preservation of the Rhynie chert material enabled the recognition of the gametophyte stages of some of the earliest land plants. Gametophytes have also been ... , Aberdeen Text with several pictures Aglaophyton major and the male gametophyte Lyonophyton Aglaophyton major Paläobotanik Münster Germinating spore / gametophyte have a look ! Aglaophyton major Virtual Paleobotany Laboratory ...
www.uni-muenster.de

Rhynie II
... mackiei Lyonophyton rhyniensis Kidstonophyton discoides Still undescribed female gametophyte of Aglaophyton major Still undescribed female and male gametophytes of Rhynia gwynne-vaughanii Still undescribed male gametophyte of Horneophyton lignieri List of plants described from ...
www.uni-muenster.de More from this site

Interactive Dendrology Glossary
... Megastrobilus: Female cone of some gymnosperms like cycads and conifers. Plural: megastrobili. Microstrobilus: Male cone of some gymnosperms like cycads, ginkgo, and conifers. Plural: microstobili. Monoecious: ... female and male reproductive structures on the same plant. Needle: Long, slender leaf; as in Pinus. Pollen: The male gametophyte. Minute, powdery grains produced by anthers and male cones ...
ncsu.edu

Department of Botany
... Department of Botany Image Preview Description Image Preview Description Gametophyte Sporophyte MC Hairy-cap moss Male MC Polytrichum Polytrichum calyptera MC Polytrichum moss large MC Polytrichum operculum sporophytes of Polytricum Up ...
botit.botany.wisc.edu

Mosses and Liverworts in Wales: Antheridia
... Mosses and Liverworts in Wales: Antheridia Antheridia Antheridia are the male sexual organs of the gametophyte generation of mosses and liverworts. They consist of simple sacs with a wall usually only ... antheridia, and in suitable damp conditions, these are released and give rise to antherozoids - motile male gametes. These always require a film of water in which to "swim" to the female ...
home.clara.net

Mosses and Liverworts in Wales: Basic Facts
... sexual parts are contained in rather small and inconspicuous structures, usually quite unlike flowers. The male organs (antheridia) produce mobile antherozoids which require a film of water in which to ... is then capable of germinating to eventually develop into a new gametophyte plant. A further common means of reproduction in the gametophyte is through shedding fragments of leaves or other parts of ...
home.clara.net More from this site

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