spore mother cell
a cell, which by cell divisions, produces usually four spores
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Spore
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microspore
(Science: plant biology) A haploid spore produced by a plant sporophyte that develops into a male gametophyte. In seed plants, it corresponds to the developing pollen grain at the uninucleate stage.
A sexual spore from certain fungus species in which spores are found in a sac called an ascus. Haploid spores found in the asci of Ascomycete fungi.
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spore -- n. A single cell that is dispersed as a reproductive unit, or that encapsulates a cell during unfavorable environmental conditions; in organisms with an alternation of generations; the products of meiosis are spores.
Spore
A highly resistant, resting state of an organism. Under the proper condiditons s spore will germinate to form a viable, reproducing organism. Bacterial spores are often very resistant to heat and dessication.
Spore: A reproductive structure developing in certain bacteria and fungi which is strongly resistant to environmental influences but which will become active under suitable conditions.
spore
[Gk. spora, seed]
In the life cycle of a plant or alga undergoing alternation of generations, a meiotically produced haploid cell that divides mitotically, generating a multicellular individual, the gametophyte, ...
spores Impervious structures formed by some cells that encapsulate the cells and protect them from the environment; ...
spore. A reproductive body produced by certain fungi and other organisms, capable of growing into a new individual under proper conditions.
sporulation. The production of spores.
Spore. A form taken by certain microbes that enables them to exist in a dormant stage. It is an asexual reproductive cell. See Asexual reproduction, Dormant.
spores - temperature and moisture insensitive resting structures formed by many bacteria and fungi, typically formed for dispersal and subsisting during adverse conditions ...
zygospore In fungi, a structure that forms from the diploid zygote created by the fusion of haploid hyphae of different mating types. After a period of dormancy, the zygospore forms sporangia, where meiosis occurs and spores form.
a large megaspore and
3 small cells that disintegrate.
Development of the megaspore
Link to a view of the entire process.
Spore
Unicellular often environmentally resistant dormant or reproductive body produced by plants and some microorganisms and capable of development into a new individual either directly or after fusion with another spore.
spore A reproductive unit (often unicellular) that is capable of developing into a new organism without fusion with another cell.
sporoblast Cell mass that will differentiate into a sporocyst within an oocyst.
endospore
(not shown) Some bacteria, like Clostridium botulinum, form spores that are highly resistant to drought, high temperature and other environmental hazards. Once the hazard is removed, the spore germinates to create a new population.
endospore - seed-like structure; formed to preserve life when conditions turn bad ...
Airborne mold spores increase kids' risk for multiple allergiesSurprise finding for stretched DNAGlobal warming may warrant new approaches to ecosystem restoration
Other biology definition ...
Well, the organic spores, I'm not really familiar with how they use those, because they don't use them a lot in this particular area because of the lower incidence of corn borer.
The reduction division process by which haploid gametes and spores are formed, consisting of a single duplication of the genetic material followed by two mitotic divisions. Messenger RNA (mRNA).
This anaerobic, nitrogen-fixing spore former can convert water-soluble uranyl ion U(VI) to less soluble U(IV). Its circular genome is about 4Mb, and no plasmids have been detected. More than 500kb of edited unique sequence has been obtained so far.
Plants of this hybrid normally produce abortive sporangia containing inviable spores. In 1944 Butters found a W. abbeae plant near Grand Portage, Minn. that had one fertile frond (Butters and Tryon 1948).
Two successive nuclear divisions (with corresponding cell divisions) that produce haploid gametes (in animals) or haploid sexual spores (in plants and fungi) having one-half of the genetic material of the original cell.
One of them is by adopting a macrostate denominated spore; another way consists of a biochemical adaptation to that condition by producing proteins that will help her to tolerate higher temperatures.
Fecal coliform bacteria Technically, all the facultative anaerobic gram negative non-spore forming rod shaped bacteria that fermet lactose in EC medium with gas production within 24h at 44.5 degrees C.
In plants, gametes are not produced directly. Instead meiosis produces spores and then mitosis produces gametes. Although plants have an additional step, meiosis eventually results in the production of haploid gametes.
Phases of Meiosis ...
Epigenesis
Development of a plant or animal from an egg or spore through a series of processes in which unorganized cell masses differentiate into organs and organ systems.
Gene flow: The exchange of genetic traits between populations by movement of individuals, gametes, or spores. It involves the spread of new variants among different populations through dispersal.
Agent that frees from infection, usually a chemical agent but sometimes a physical one, such as x-rays or UV light, that destroys harmful microorganisms but may not kill bacterial spores.
differentiation-inducing factor (DIF) - a low molecular weight lipid that induces posterior cells of a Dictyostelium slug to differentiate as stalk cells as opposed to spore cells.
In higher plants, the diploid generation, the members of which are known as sporophytes due to their ability to produce spores, is usually dominant and more recognizable than the haploid gametophyte generation.
Better yet, the wind blows the pollen to another conifer of the same species, and a cone (called the ovulate cone) catches the pollen. Again, the pollen and megaspore (receiving haploid cell) are haploid and combine to form a diploid cell.
Ferns are dispersed to new locations by means of tiny windblown spores. Earlier in the earth's history, ferns grew in profusion and their remains contributed to the formation of coal. You can often see fossilized imprints of ferns in coal.
In plants, a propagule is whatever structure functions to reproduce the species: a seed, spore, stem or root cutting, etc.
 See also: Plant, Organ, Cell, Animal, Animals
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