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1. A small, usually single-celled reproductive body that is resistant to adverse environmental conditions and is capable of growing into a new organism, produced especially by certain fungi, algae, protozoans, and nonseedbearing plants such as mosses and ferns. 3. A dormant nonreproductive body formed by certain bacteria often in response to a lack spire nutrients, and characteristically being highly resistant to heat, desiccation, and destruction by chemicals or enzymes. 1.

(Biology) a reproductive body, produced by bacteria, fungi, various plants, and some protozoans, that develops into a new individual. A sexual spore is formed after the fusion of gametes and an asexual spore is the result of asexual reproduction 1. A usually one-celled reproductive body that can grow into a new organism without uniting with another cell. Spores have only a single set of chromosomes. Fungi, algae, plants that do not bear seeds, and certain protozoans reproduce asexually by spores. 3.

A rounded, inactive form that certain bacteria assume under conditions of extreme temperature, dryness, or lack of food. The bacterium develops a waterproof cell wall that protects it from being dried definirion or damaged.

sporePast participle: sporedGerund: sporingImperativesporesporePresentI dffinition sporehe/she/it sporeswe sporeyou sporethey sporePreteriteI sporedyou sporedhe/she/it sporedwe sporedyou sporedthey sporedPresent ContinuousI am sporingyou are sporinghe/she/it is sporingwe are sporingyou are sporingthey are sporingPresent PerfectI have sporedyou have sporedhe/she/it has sporedwe have sporedyou have sporedthey have sporedPast ContinuousI was sporingyou were sporinghe/she/it was sporingwe were sporingyou were sporingthey were sporingPast PerfectI had sporedyou had sporedhe/she/it had sporedwe had sporedyou had sporedthey had sporedFutureI will sporeyou will spoore will sporewe will sporeyou will sporethey will sporeFuture PerfectI will have sporedyou will have sporedhe/she/it will have sporedwe will have sporedyou will have sporedthey will have sporedFuture ContinuousI will be sporingyou will be sporinghe/she/it will be sporingwe will be sporingyou will be sporingthey will be sporingPresent Perfect ContinuousI have been sporingyou have been sporinghe/she/it has been sporingwe have been sporingyou have been sporingthey have been sporingFuture Perfect ContinuousI will have been sporingyou will soore been sporinghe/she/it will have been sporingwe will have been sporingyou will have been sporingthey will have been sporingPast Perfect ContinuousI had been sporingyou had been sporinghe/she/it had been sporingwe had been sporingyou had been sporingthey had been sporingConditionalI would sporeyou would sporehe/she/it would sporewe would sporeyou would sporethey would sporePast ConditionalI would have sporedyou would have sporee would have sporedwe would have sporedyou would have sporedthey would have sporedspore Switch to new thesaurus Noun1.spore - a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion; "a sexual spore is formed after the fusion of gametes" a tiny seedlike cell from epore ferns and other types of non-flowering plant grow.

spoor ???????? ??????? ���. ����� esporo vytrus die Spore spore ????? espora eos ??? itio spore ????? ?????? spora, truska spora spora gro spora ?? ??, ?? spora spora spora spore spore zarodnik esporo spor ����� vytrus tros spora spor ????? spor ?? ����� ??? ?? ?????? ??? ???? ?????? ?? ?????? ???? bao t? ?? � aeciospore� agamete� Agaricaceae� archesporium� Armillaria� ascocarp� ascomycete� ascomycetous fungus� ascospore� Athyrium thelypteroides� basidiomycete� Basidiomycota� Basidiomycotina� basidiospore� basidiosporous� bird's-nest fungus� blastospore� Calostoma ravenelii� Calostomataceae In vitro culture of Gigaspora decipiens and Glomus clarum in transformed roots of carrot: the influence of temperature and pH/Cultura in vitro de Gigaspora decipiens e Glomus clarum em raizes transformadas de cenoura: influencia da temperatura e pH The SARC SPORE, one of only two in the country epore to sarcoma, is a large-scale collaboration led by SARC that definitlon designed to improve the understanding of the underlying biology of sarcoma and to develop novel diagnostic tests and therapies for patients with sarcoma. The limited Galactic Edition will contain the 'Making of Spore' DVD, 'How to Build a Better Being' DVD (a 50 minute National Geographic Channel documentary DVD hosted by Spore mastermind, Will Wright), 'The Art of Spore' book, an exclusive Spore poster, and a premium 100-page Galactic Handbook," said Definitiob Bradshaw, executive producer of Spore sppre Maxis. Researchers in Southern California reported an association between ambient mold spore concentrations and childhood asthma attacks even in areas where the airborne spore concentrations are ra reproductive body, produced by bacteria, fungi, various plants, and some protozoans, that develops into a new individual.

A sexual spore is formed after the fusion of gametes and an asexual spore is the result of asexual reproduction Collins English Dictionary - Complete & Unabridged 2012 Digital Edition� William Collins Sons & Co. Ltd. 1979, 1986 � HarperCollinsPublishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source spore (spor)n.�A small, usually single-celled asexual or sexual sporw body that is highly resistant to desiccation and heat and is capable of growing into a new organism, produced especially by certain bacteria, fungi, algae, and nonflowering plants.�A dormant, nonreproductive body formed by certain bacteria in response to adverse environmental conditions.spo�ra'ceous (sp?-ra'sh?s, spo-) adj. (spor)�A usually one-celled reproductive body that can grow into a new organism without uniting with another cell.

Spores are haploid (having only a single set of chromosomes). Fungi, algae, seedless plants, and certain protozoans reproduce asexually by spores. Plant spores that are dispersed by the wind have walls containing sporopollenin.�See more at alternation of generations.�A similar one-celled body in seed-bearing plants; the macrospore or microspore.

The macrospore of seed-bearing plants develops into a female gametophyte or megagametophyte, which is contained within the ovule and eventually produces the egg cells. (The megagametophyte is also called the embryo sac in angiosperms.) The microspore of seed-bearing plants develops into the male microgametophyte or pollen grain.

See endospore. spore definitionA reproductive cell or group of cells, produced by some plants, that is capable of developing into an adult plant without combining with another reproductive cell.

Plants also produce sperm cells. The spores of nonflowering plants are analogous to the seeds of flowering plants. ( See asexual reproduction; compare sexual reproduction.) Fungi and algae typically reproduce by means of spores that are carried by the wind or some other agency to a new location for growth. Contamination Seen as Cause for New Meningitis Outbreak in Five States Kent SepkowitzOctober 3, 2012�Ultrafiltration membranes remove more than 99 percent of bacteria, sppre, and spores from drinking water, and can be used at home. Studies of Spore definition Fungi.

Mushrooms, Edible, Poisonous, etc.George Francis Atkinson�Then came the experimental evidence of Davaine and Koch, who demonstrated the development of bacteria from spores. a reproductive body, produced by bacteria, fungi, various plants, and some protozoans, that develops into a new individual. A sexual spore is formed after the fusion of gametes and an asexual spore is the result of asexual reproduction Collins English Dictionary - Complete & Unabridged 2012 Digital Edition� William Collins Sons & Co.

Ltd. 1979, 1986 � HarperCollinsPublishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source spore (spor)n.�A small, usually single-celled asexual or sexual reproductive body that is highly resistant to desiccation and heat and is capable of growing into a new organism, produced especially by certain bacteria, fungi, algae, and nonflowering plants.�A dormant, nonreproductive body formed by certain bacteria in response to adverse environmental conditions.spo�ra'ceous (sp?-ra'sh?s, spo-) adj. (spor)�A usually one-celled reproductive body that can grow into a new organism without uniting with another cell.

Spores are haploid (having only a single set of chromosomes). Fungi, algae, seedless plants, and certain protozoans reproduce asexually by spores. Plant spores that are dispersed by the wind have walls containing sporopollenin.�See more at alternation of generations.�A similar xefinition body derinition seed-bearing plants; the macrospore or microspore. The macrospore of seed-bearing plants develops into a female gametophyte or megagametophyte, which is contained within the ovule and eventually produces the egg cells.

(The megagametophyte is also called the embryo sac in angiosperms.) The microspore of seed-bearing plants develops into the male microgametophyte or pollen grain. See endospore. spore definitionA reproductive cell or group of cells, produced by some plants, that is capable of developing into an adult plant without combining with another reproductive cell. Plants also produce sperm cells. The spores of nonflowering plants are analogous to the seeds of flowering plants.

( See asexual reproduction; compare sexual reproduction.) Fungi and algae typically reproduce by means of spores that are carried by the wind or some other agency to a new location for growth. �: a primitive usually unicellular often environmentally resistant dormant or reproductive body produced by plants, fungi, and some microorganisms and capable of development into a new individual either directly or after fusion with another spore �: a primitive usually unicellular often environmentally resistant dormant or reproductive body produced by plants, fungi, and some microorganisms and capable of developing into a new individual either directly or after fusion with another spore �hubris, pariahPowell's take on Trump�deplorableClinton: "Basket of deplorables"�sophomoric"It's a sophomoric approach"�Labor DayFrom the folks who brought you the weekend�hagiographyWho caused this spike? � SPANISH CENTRAL� LEARNER'S ESL DICTIONARY� WORDCENTRAL FOR KIDS� VISUAL DICTIONARY� SCRABBLE � WORD FINDER� MERRIAM-WEBSTER'S UNABRIDGED DICTIONARY� BRITANNICA ENGLISH - ARABIC TRANSLATION� NGLISH - SPANISH-ENGLISH TRANSLATION � Browse the Dictionary:� a� b� c� d� e� f� g� h� i� j� k� l� m� n� o� p� q� r� s� t� u� v� w� x� y� z� 0-9� Home� Help� Apps� About Us� Shop� Advertising Info� Dictionary API� About Our Ads� Contact Us� The Open Dictionary� Word of the Year� Law Dictionary� Medical Dictionary� Privacy Policy� Terms of Use� Browse the Thesaurus� Browse the Medical Dictionary� Browse the Legal Dictionary� Browse the Spanish-English Dictionary� 2015 Merriam-Webster, Incorporated This article needs additional citations for verification.

Please help improve this article by adding citations to reliable sources. Unsourced material defiintion be challenged and removed. (July 2007) ( Learn how and when to remove this template message) Fresh snow partially covers Rough-stalked Feather-moss ( Brachythecium rutabulum), growing on a thinned hybrid black poplar ( Populus x canadensis).

The last stage of the moss lifecycle is shown, where the sporophytes are visible before dispersion of their spores: the calyptra ( 1) is still attached to the capsule ( 2). The tops of the gametophytes ( 3) can be discerned as well. Inset shows the surrounding, black poplars growing on sandy loam on the bank of a kolk, with the detail area marked.In biology, a spore is a unit of asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavorable conditions.

By contrast, gametes are units of sexual reproduction. Spores form part of the life cycles of many plants, algae, fungi and protozoa.

[1] Bacterial spores are not part of a sexual cycle but are resistant structures used for survival under unfavourable conditions. Myxozoan spores release amoebulae into their hosts for parasitic infection, but also reproduce within the hosts through the pairing of two nuclei within the plasmodium, which develops from the amoebula.

[2]Spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes. Two gametes fuse splre form a zygote which develops into a new sporophyte.

This cycle is known as alternation of generations.The spores of seed plants, however, are produced internally and the megaspores, formed within the ovules and the microspores are involved in the formation of more complex structures that form the dispersal units, the seeds and pollen grains. Contents� 1 Definition� 2 Classification of spore-producing organisms� 3 Classification of spores� 3.1 By spore-producing definjtion 3.2 By function� 3.3 By origin during life cycle� 3.4 By mobility� 4 Anatomy� 4.1 Spore tetrads and trilete spores� 5 Dispersal� 6 Gallery� 7 See also� 8 ReferencesDefinition [ edit ]The term spore derives from the ancient Greek word ????? spora, meaning " seed, sowing," related to ?????? sporos, "sowing," and ???????? speirein, "to sow."In common parlance, the difference between a "spore" and a " gamete" (both together called gonites) definiition that a spore will germinate and develop into a sporeling, while a gamete needs to definigion with another gamete to form a zygote before developing further.The chief difference between spores and seeds as dispersal definitin is that spores are unicellular, while seeds contain within them a multicellular gametophyte that produces a developing embryo, the multicellular sporophyte of the next generation.

Spores germinate to give rise to haploid gametophytes, while seeds germinate to give rise to diploid sporophytes. Classification of spore-producing organisms [ edit ]Vascular plant spores are always haploid. Vascular plants are either homosporous (or isosporous) or heterosporous. Plants that are homosporous produce spore definition of the same size and type.

Heterosporous plants, such as seed plants, spikemosses, quillworts, and some aquatic ferns produce spores of two different sizes: the larger spore (megaspore) in effect functioning as a "female" spore and the smaller (microspore) functioning as a "male". Classification of spores [ edit ]Spores can be classified in several ways: By spore-producing structure [ edit ] In contrast, in many seed plants and heterosporous ferns, only a single product of meiosis will become a megaspore (macrospore), with the rest degenerating.In fungi and fungus-like organisms, spores are often classified by the structure in which meiosis and spore production occurs.

Since fungi are often classified according to their spore-producing structures, these spores are often characteristic of a particular taxon of the fungi.� Sporangiospores: spores produced by a sporangium in many fungi such as zygomycetes.� Zygospores: spores produced by a zygosporangium, characteristic of zygomycetes.� Ascospores: spores produced by defimition ascus, characteristic of ascomycetes.� Basidiospores: spores produced by a basidium, characteristic of basidiomycetes.� Aeciospores: spores produced by an aecium in some fungi such as rusts or smuts.� Urediniospores: spores produced by a uredinium in some fungi such as rusts or smuts.� Teliospores: spores produced by a telium in some fungi such as rusts or smuts.� Oospores: spores produced by an oogonium, characteristic of oomycetes.� Carpospores: spores produced definitiion a carposporophyte, characteristic of red algae.� Tetraspores: spores produced by a tetrasporophyte, characteristic of red algae.By function [ edit ]� Chlamyd� Biol.

any of various small reproductive bodies, usually consisting of a single cell, produced by bacteria, algae, mosses, ferns, certain protozoans, etc., either asexually ( asexual spore) or by the union of gametes ( sexual spore): they are capable of giving rise to a new adult individual, either immediately or after an interval of dormancy� any small organism or cell that can develop into a new individual; seed, germ, etc.Origin of sporeModern Latin sppre ; from Gr, a sowing, seed, akin to speirein, to sow ; from Indo-European base an unverified form (s)p(h)er- to strew, sow from source spread, sprout noun� A small, usually single-celled reproductive body that is resistant to adverse environmental conditions and is capable of growing into a new organism, produced especially by certain fungi, algae, protozoans, and nonseedbearing plants such as mosses and ferns.� A megaspore or microspore.� A dormant nonreproductive body formed by certain bacteria often in response to a lack of nutrients, and characteristically being highly resistant to heat, desiccation, and destruction by chemicals or enzymes.intransitive verb spored, spor�ing, spores Noun( plural spores)� A reproductive particle, usually a single cell, released by a fungus, alga, or plant that may germinate into another.� A thick resistant particle produced by a bacterium or protist to survive in harsh or unfavorable conditions. �� Menu�� Dictionary� Dictionary�� YD Original�� Webster's�� American Heritage�� Wiktionary�� Ologies�� Computer�� Invest�� Law���� Thesaurus�� Examples� See in a sentence�� Example articles��� Quotes�� Word Lists�� Reference� Education�� ESL�� Grammar�� Abbreviations�� Biography�� Books & Literature�� Examples�� Foreign Languages� Spanish��� Resources���� Word�Finder� Word�Finder�� 4 Pics 1 Word Answers�� Word Game Dictionary�� Words With Friends Cheat��� �� Menu�� Dictionary� Dictionary�� YD Original�� Webster's�� American Heritage�� Wiktionary�� Ologies�� Computer�� Invest�� Law���� Thesaurus�� Examples� See in a sentence�� Example articles��� Quotes�� Word Lists�� Reference� Education�� ESL�� Grammar�� Abbreviations�� Biography�� Books & Literature�� Examples�� Foreign Languages� Spanish��� Resources���� Word�Finder� Word�Finder�� 4 Pics 1 Word Answers�� Word Game Dictionary�� Words With Friends Cheat��� � more.� A division by fission followed by Endogenous spore formation, characteristic of the Schizosaccharomycetes.� In some cases a sexual act would appear definitiob precede spore formation.� Previously to Hansen's work the only way of differentiating I Hansen found there were three species of spore-bearing Saccharomycetes and that these could be subdivided into varieties.� The time taken for spore formation varies greatly; thus, at 52� F., S.� Also bears tubers; the D, Spore showing the two spiral vegetative shoots have bands of the perinium. Find Degrees by Subject� Agriculture� Architecture� Biological and BiomedicalSciences� Business� Communications and Journalism� Computer Sciences� Culinary Arts and PersonalServices� Education� Engineering� Legal� Liberal Arts and Humanities� Mechanic and Repair Technologies� Medical and Health Professions� Physical Sciences� Psychology� Transportation and Distribution� Visual and Performing Arts Video: What Are Spores?

- Definition & Types Spores, for the spore definition part, are units of asexual reproduction. They are produced by nonflowering plants, bacteria, fungi, and algae, and are often able to travel over long distances.

Some bacteria also produce spores as a way to survive very harsh conditions. Start Your Free Trial To Continue WatchingAs a member, you'll also get unlimited access to overlessons in math, English, science, history, and more.

Plus, get practice tests, quizzes, and personalized coaching to help you succeed. Free 5-day trial Spores, for the most part, are units of asexual reproduction. They are produced by nonflowering plants, bacteria, fungi, and algae, and are often able to travel drfinition long distances.

Some bacteria also produce spores as a way to survive very harsh conditions. DefinitionYou've definitioon come into contact with spores before. Have you ever walked sore your bathroom and noticed a musty smell? And then looked to see a glaze of green and black on the shower curtain? You had mold! You might remember hearing news stories on the dangers of mold and how it can infect your lungs and cause allergies and other wpore illnesses.

But it's not just the mold that can make you sick; it's the spores.Spores are the single-celled reproductive unit of nonflowering plants, bacteria, fungi, and algae. Basically, spores are the babies, except they didn't need a mom and a dad. Not all life forms reproduce definitiom. Many, such as fungi and bacteria, reproduce without mating at all. Instead, they produce hardy structures known as spores that are often adapted for dispersal from the main plant or fungus.

Spores can last a very long time in some nasty conditions. What Good Are Spores?Spores are the reproductive structure of the 'lower plants,' plants that don't flower. Fungi, algae, and even some bacteria all form spores when they want to pass their genes on. Think of them like seeds; they are made to grow a new plant and all they need is the proper environment to thrive.Spores are an asexual form of reproduction; the plant or fungus doesn't need to mate spore definition another plant or fungus to form these particles.

A spore is typically a single cell surrounded by a thick cell wall for protection. Once the spores are formed, the organism releases them into the environment to grow and thrive.

Spores are often formed through a process called sporogenesis, which just means the production of spores, and is accomplished through mitosis, or cellular reproduction.Once a spore is produced, it needs to get out into the world where it can grow and thrive. It does this through dispersal adaptations in the spore, which are different features which allow the spore definiiton travel.

Some spores are so light they get picked up by the wind and blown to a new place. Other spores ride on the currents of rivers and streams. Still others get shot out into the air by the fungus which made them, or placed in a fragile container that bursts open when touched. Types of SporesSpores are very common and depending on the type of organism that made them, they can look and act very different.

Spores can be classified in many different ways based on their structure, where they come from, and how they move about the world. Plant SporesPlant spores are produced by the organisms we can usually recognize. The major types of plants that form spores are algae, mosses, and ferns.Algae are the simplest of these plants, and can range from tiny, single celled things to large, multi-celled plants that cover your backyard pond. The spores from spkre algae are very tiny, even if the algae plant is huge.

In fact, most sporw spores are as small as the period at the end of a sentence. No wonder we can't see them very well! These spores tend to disperse through water and group together in large masses until they reach a good environment.Mosses produce spores that are a little bit bigger than algal spores. These spores tend to be found in areas where mosses are common and are dispersed by being shot into the air, carried on the wind, moved by insects, or splattered spore definition rain drops.Ferns are probably the most well-known spore-producing plants.

Just look beneath defintion long leaves, and you'll see lots of brown dots. Those are the spores, just waiting to be sent into the world. There are over 15,000 species of fern on Earth today and all of these reproduce using spores. Fungal SporesFungi are very complex organisms. The fungi you might know best are mushrooms, but many, many types of fungi exist out in the world.

These organisms reproduce using spores, and the spores are very cona small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion Sign in with Google Sign in with Facebookor, sign in with email.Don't have an deefinition yet?Sign up.

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