Where does the zygote of a moss plant form? What grows from the zygote?
367063
The sperm and egg (1n) come from the gametophyte through mitosis. After fertilization, the zygote grows into a sporophyte (2n). The sporophyte creates spores (1n) by meiosis which grows into a gametophyte (1n). It's a cycle! Hope this helps!
395275
In nature, living things evolve through changes in their DNA. In an animal like a chicken, DNA from a male sperm cell and a female ovum meet and combine to form a zygote -- the first cell of a new baby chicken. This first cell divides innumerable times to form all of the cells of the complete animal. In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote.\n\nChickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA that produced the zygote. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the mutation(s) that produced the first true chicken. That one zygote cell divided to produce the first true chicken.\n\nPrior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the chicken's egg. So, the egg must have come first.
165182
try\nhttp://www.enchantedlearning.com/subjects/plants/cell/\nor\nhttp://www.lclark.edu/~seavey/plant%20cell72-1.jpg\nor\nhttp://micro.magnet.fsu.edu/cells/plantcell.html
430128
Non-vascular plants do not have vascular systems to carry water, nutrients, ant the products of photosynthesis throughout the plant. Non-vascular plants include mosses, ferns, hornworts, and liverworts. The mosses, hornworts, and liverworts all transport water by osmosis so they cannot grow very large. This is why they must live so close to water. Ferns have a primitive forrunner of a vascular system, but it is not really a real vascular system because they do not have true roots, and also lack xylem, which is a type of cell that carries water and nutrients up the plant, and phloem, which are cells that can carry water, nutrients, and the products of photosythesis throughout the plant. If you have any more questions, I'll check back here for updates if this was helpfull at all.
799897
Asexual mitospores (spores formed by mitosis) form within the sporangia (thousands of spores) or sporangioles (single spore or a few). They are released when mature by the disintegration of sporangium wall. The sporangioles containing one spore can have their wall fused with spore wall. In that case, the whole sporangioles separate from the fungus, and are carried by wind like conidia. \n\nGermination of these spores forms the haploid hyphae of a new mycelium. Asexual reproduction occurs continuously. \n\nSexual reproduction occurs only when opposite mating types (designated + and -) come in contact. Then special cells become gametes that fuse forming a zygote. The zygote develops a resistant cell wall, forming a zygospore, the characteristic that gives its name to this group of fungi. Subsequently, the zygospore germinates and forms a sporangiophore whose sporangium produces both + and - haploid spores.
685516
Stem leaves, petals, stamen or piston.\n\nEnough for a child to know at this stage in life.
760447
How ironic; spent half the night figuring this out too... here's some of my notes\n\n•2n or not 2n: The story of the sporophyte\n\n1.gametophyte definition – “In plants, the haploid (n), gamete producing generation, which alternates with the diploid (2n) sporophyte.”\n2.sporophyte definition – “the spore producing, diploid(2n)phase in the life cycle of a plant having alternating generations.”\n3.Gametophytes and sporophytes don’t always look the same.\n4.the dominance of each differs in the phyla.\n5.With increasing complexity: the gametophyte becomes LESS dominant while the sporophyte becomes MORE dominant.\n6.In mosses, the Sporophyte is parasitic upon gametophyte. In other words, what we largely see is a photosynthetic and free living gametophyte supporting a sporophyte. \n7.However, evolution has favoured the opposite, on the whole sporophytes are large and the gametophyte small.  For example, in conifers, the gametophyte is hidden within an acorn and the sporophyte is depending on other organisms to use the acorn as food and release the gametophyte. Moreover, angiosperms have reduced gametophytes to ovules and pollen. \n\nHope this helps?
145878
In nature, living things evolve through changes in their DNA. In an animal like a chicken, DNA from a male sperm cell and a female ovum meet and combine to form a zygote -- the first cell of a new baby chicken. This first cell divides innumerable times to form all of the cells of the complete animal. In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote. \n\nChickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA that produced the zygote. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the mutation(s) that produced the first true chicken. That one zygote cell divided to produce the first true chicken. \n\nPrior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the chicken's egg. So, the egg must have come first.
381497
The answer is C because seed- bearing plants, or spermopsidae, adapted to not need H2O for reproduction. The gametophyte generation in seed plants is the pollen and seeds. Other plants, such as ferns DO have a primative form of a vascular system, therefore C is the only answer...
862639
When the egg and the spermatozoid unit, a zygote if formed.  That zygote begin to develop, neither as male or female.  Or should I say it develops as DEFAULT which is, female.  At 6 weeks of gestation, the zygote becomes an embryo and THEN, and only then, it differenciate to male or female.  \n\nAs you may know, female have XX chromosome and male have XY chromosome.  On that tiny Y chromosome there's a gene, called SRY, that tells the embryo's body to produce testicules.  If the embryo's female, then the second X commands the formation of ovaries.  Then hormones are produced, and penis or uterus appear.\n\nYour nipples are simply made before that 6th week, when the zygote is a "default female" and once they're there, they stay there, even after the testosterone hormone start being produced.
28317
Basically diplobiont. \nIn other organisms (plants, fungi), there are longer haploid or haploid + diploid phases. \nMetazoans are diploid; the only haploid stage in their life cycle are the gametes, which fuse to form the diploid zygote.
158301
Gametes are produced via meiosis\n\nThe chromosomes are seperated into two and go to their respective cells.\n\nMeiosis divides the genetic material in a normal cell if half. A normal cell has 46 chromosomes, a gamete has 23.\n\nTwo gametes combine during infertilization creating a zygot so to grow into a fetus.
941074
After the spore germinates, single cells will aggregate into a motile phase.  This is called either a plasmodium or pseudoplasmodium depending upon the species.  The motile phase moves like an amoeba or slug.\n\nWhen a suitable location is found (in terms of light and moisture) the motile phase becomes stationary and develops fruiting bodies either sexually or asexually (again species dependent).  The fruiting bodies release spores to continue a new cycle.\n\nSee additional material below:
554419
Spores are usually the more simple non-sexual reproductive cells and are found in the lower plants and fungi, especially in those which may or may not need much water or light to develop to another stage of an organism's life cycle; (the sexual stages with sperm require the most water so the sperm can move with their flagella-tail or cilia! Spores can lay around in a dry environment for a while without water and then will be able to sprout long after the spore was originally released. Sperm and egg are generally much more delicate and short-lived and dry out easily. \n\nSometimes spore producing organisms reproduce by "alternation of generations" (like Bryophytes: mosses and liverworts and Pterophytes (ferns) and some fungi (mushrooms), where part of their life cycle is sexual reproduction with gametes or some other type of"sex cell" and part of their life is non-sexual with spores.  Spores (usually n haploid in chromosome number) of mosses and liverworts and ferns are able to produce the n haploid gametophyte stage (which makes the gametes) and the fertilized gametes (zygospores)  develops the spores, often inside a little capsule, can produce the 2n sporophyte stage. Sexual non-spore reproduction gives greater genetic variation than spores.  Non sexual reproduction by spores produces similar simple less diverse offspring.\n\nSpores are also produced by some fungi, like under the gills of mushrooms and on bread mold. Spores are able to move with either the air or with water or even in the fur of animals since they are often round and move easily.
738490
into a zygote, \nthan, what is zigote?\nzygote is the single cell formed by the union of two gametes, especially a fertilized ovum before cleavage.\n\nthan what does cell make from?\nCell makes from membrane which serves as a semi or selective permeable barrier allowing small nonpolar and polar molecules such as oxygen, carbon dioxide, and glycerol to diffuse across (down their concentration gradients), but does not allow the diffusion of larger polar molecules (sugars, amino acids, and so on) or inorganic ions such as Na+, K+, Cl?, Ca2+ (sodium, potassium, chlorine, calcium).\n\nit mean zygote is a coloid substance
71929
i dont know what BioGeek is talking about but as far as i know phylum bryophyta refers to mosses\n\nBryophytes used to be classified as three classes of a single phylum, Bryophyta. Modern texts, however, now assign each class to its own phylum: Mosses (Bryophyta), Liverworts (Hepatophyta), and Hornworts (Anthoceraphyta). This reflects the current taxonomic wisdom that the Liverworts and Hornworts are more primitive and only distantly related to Mosses and other plants.
280647
"In nature, living things evolve through changes in their DNA. In an animal like a chicken, DNA from a male sperm cell and a female ovum meet and combine to form a zygote -- the first cell of a new baby chicken. This first cell divides innumerable times to form all of the cells of the complete animal. In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote. \n\nChickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA that produced the zygote. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the mutation(s) that produced the first true chicken. That one zygote cell divided to produce the first true chicken. \n\nPrior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the chicken's egg. So, the egg must have come first."