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WHAT DOES GAMETOPHYTE MEAN IN ENGLISH?
A gametophyte is the haploid multicellular stage in the alternation of generations during the life cycle of land plants and algae. It is produced from mitotic cell division of spores, which are produced by meiosis in sporophytes. Gametophytes produce haploid male or female gametes, by mitosis. The female and male gametes are also called, respectively, egg cells and sperm cells. The fusion of male and female gametes produces a diploid zygote, which develops by repeated mitotic cell divisions into a multicellular sporophyte. Because sporophytes are the product of the fusion of two haploid gametes, these sporophyte cells are normally diploid, containing two sets of chromosomes. The mature sporophyte produces spores by a process called meiosis, in which the chromosome pairs are separated once again to form single sets. The spores are therefore once again haploid and develop into haploid gametophytes. In bryophytes, the gametophyte is the dominant form and thus the most familiar phase of the life cycle. The sporophytes are attached to and dependent on the long-lived gametophytes. Moss gametophytes originate from the germination of a spore.
The translations of gametophyte from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «gametophyte» in English.
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «gametophyte».
FREQUENCY OF USE OF THE TERM «GAMETOPHYTE» OVER TIME
The graph expresses the annual evolution of the frequency of use of the word «gametophyte» during the past 500 years. Its implementation is based on analysing how often the term «gametophyte» appears in digitalised printed sources in English between the year 1500 and the present day.
Examples of use in the English literature, quotes and news about gametophyte
10 ENGLISH BOOKS RELATING TO «GAMETOPHYTE»
Discover the use of gametophyte in the following bibliographical selection. Books relating to gametophyte and brief extracts from same to provide context of its use in English literature.
Biology Coloring Workbook
These spores germinate to form the next generation, called the gameto- phyte
generation, and cells in the gametophyte generation are also haploid. Male and
female gametes (sex cells) are formed at the end of this generation, and when
I. Edward Alcamo, 1998
Introduction to the Biology of Marine Life
Haploid spores Germination Haploid gametophyte plants Diploid sporophyte
plant d e v e lo p m e n t M e io s is G e r m i n a t io n a n d Haploidgametes
Fusion Diploid zygote Figure 4.17 The life cycle of the green alga,Ulva,
John Morrissey, James Sumich, 2011
Investigations Into Gametophyte Morphology and Population ...
Their substrate is a dark substrate that does not allow light to enter the
gametophyte from the bottom (substrate) side of the gametophyte. Humidity can
vary widely between the substrate side of the gametophyte (higher humidity) and
the air ...
Chanda Lee Skelton, 2007
Gametogenesis occurs in them at such an early stage of an extremely
abbreviated ontogeny of the gametophyte that gametangia cannot even be
formed, and the gametes are formed without them. Moreover, the development of
the gametes ...
Armen Takhtajan, 2009
Zygote (2n) Sporangia (2n) Alternation of gametophyte and sporophyte gener
tions in the plant life cycle (see also Fig. 13-4). In some plants, the gametophyte
is unisexual, either male or female. In others, the gametophyte is bisexual or ...
Monroe W. Strickberger, 2005
Competition Science Vision
Development of both the types of sporangia is of eusporangiate type.
Gametophyte Microspore and male gametophytes : (1) Microspore — The
microspore is the first cell of the gametophytic generation. It is a small, spherical
or oval structure, ...
Plant Reproductive Ecology : Patterns and Strategies: ...
Typical alternation of gametophyte and sporophyte, and the atypical processes of
apo- gamy and apospory, are well understood from a morphologic and
morphogenetic perspective.70 A traditional understanding of alternation places ...
Jon and Lesley Lovett-Doust Professor of Biology the University of Windsor, 1988
Handbook of Plant Science
The male gametophyte in angiosperms is the pollen grain. Male gametophyte
development starts with the anther, when sporogenous initial cells divide to give
rise to a tapetal initial cell and a microspore mother cell. Each tapetal initial cell
Systematic studies on the conducting tissue of the gametophyte in Musci. (3) On
the affinity regarding the inner structure of the stem in some species of
Thuidiaceae. Science Reports of Kanazawa University, 16, 21-60. (1971c).
Arthur Jonathan Shaw, Bernard Goffinet, 2000
Paleobotany and the Evolution of Plants
This hypothesis assumes that the free-living branching sporophyte of the
Horneophyton type became semiparasitic on its gametophyte. We do not know
what that gametophyte looked like, but it has been suggested that Sporagonites
Wilson Nichols Stewart, 1993
10 NEWS ITEMS WHICH INCLUDE THE TERM «GAMETOPHYTE»
Find out what the national and international press are talking about and how the term gametophyte is used in the context of the following news items.
Hybrid vigour: Infertility rescue
BECLIN1 is under the control of a promoter specific for the tapetum — a layer of cells which supports the developing male gametophyte. «Nature.com, Jul 15»
This structure, the gametophyte, produces gametes by mitosis and the zygote resulting from their union undergoes reduction division without ... «The Statesman, Jun 15»
No Great Need to Worry about Earth's Kelp in a Warming World
Collectively, therefore, they say their findings suggest "the scope for thermal adaptation and gametophyte performance of E. radiata across ... «CO2 Science Magazine, Jun 15»
Something Wild: Ferntastic
Landing on moist soil, a spore takes root and develops into a gametophyte, or gamete. It is this small (2-10 millimeters) membranous structure ... «New Hampshire Public Radio, May 15»
Ancient ferns offer elegant texture, color
... spores must land in a moist environment where they can grow into a vaguely heart-shaped plantlet known as a prothallus or gametophyte. «Columbia Daily Tribune, May 15»
There is more to ferns than interesting fronds
Rarely seen is the gametophyte stage because it is so small--less than 1/2 inch long. If the spore lands in a suitable location, it starts to grow by ... «Bonners Ferry Herald, May 15»
Botanists look to fern for clues to Southeast's past
“They have sex organs on the bottom of the gametophyte — the little heart-shaped thing — and if you splash water on them the little sperm are ... «KCAW, Apr 15»
Junk DNA: How much of our genetic material pulls its weight?
Then another commenter replied that this so-called “simple” fern, in fact, has a “special type of nutrition of the gametophyte that appears to be ... «Macleans.ca, Apr 15»
Staghorn and other ferns for the Hawaii garden
When the fern spore germinates, it first develops a flat, shieldlike structure called a gametophyte, or thalli. The fern we recognize develops from ... «West Hawaii Today, Mar 15»
SEPPIC launches an antioxidant derived from macroalgal cell culture
... extracted from seaweeds and marine plants, to cultivate macro-algal cells in the laboratory, Ephemer is a gametophyte extract from Undaria ... «Premium beauty, Mar 15»
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