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Top competitors on query "where are sperm and egg cells formed in seed plants"
Plant evolution: Information from Answers.com
http://www.answers.com/topic/plant-evolution Competition: low
Since all three groups have flowerlike structures, suggesting that the flower and insect pollination arose before the closed carpel, they have been called anthophytes. These methods attempt to reconstruct the branching of evolutionary lines (phylogeny) by using shared evolutionary innovations (for example, presence of a structure not found in other groups) as evidence that particular organisms are descendants of the same ancestral lineage (a monophyletic group, or clade)
Jurassic Park Plants
http://waynesword.palomar.edu/ww0803.htm Competition: low
Because of multiciliate sperm, cycads show a nice connecting link with the more primitive spore-producing ferns, which must depend on free environmental water for the transport of their sperm, and the advanced seed plants in which the sperm are non-flagellated and non-motile. In a sense, the primitive ferns are like amphibians with external fertilization because their motile sperm require environmental water in order to swim to the egg
egg - definition of egg by the Free Online Dictionary, Thesaurus and Encyclopedia.
http://www.thefreedictionary.com/egg Competition: low
In mammals, eggs produced in the ovaries are fertilized inside the body and (except in the cases of monotremes) develop in the reproductive tract until birth. The round or oval female reproductive body of various animals, including birds, reptiles, amphibians, fishes, and insects, consisting usually of an embryo surrounded by nutrient material and a protective covering.c
http://biology.clc.uc.edu/courses/bio104/cells.htm Competition: low
They are both surrounded by two bilayer membranes suggesting one membrane originated from the plasma membrane of the cell and one from the plasma membrane of the hypothetical invader. This is the endoplasmic reticulum (ER for short) and its central space or lumen is a continuation of the lumen between the membranes of the nuclear envelope
PBS - harvest of fear: engineer a crop (hot science)
http://www.pbs.org/wgbh/harvest/engineer/ Competition: low
About 8,000 years ago, for example, farmers in Central America crossed two mutant strains of a weedy-looking plant called Balsas teosinte and produced the first corn on the cob. Today scientists can produce a change quickly by selecting a single gene that may result in a desired trait and inserting that gene directly into the chromosome of an organism
What kind of cells are formed in meiosis
http://wiki.answers.com/Q/What_kind_of_cells_are_formed_in_meiosis Competition: low
When one cell undergoes meiosis, it turns into et What kind of cells do meiosis produce? The process of meiosis produces 4 haploid cells (only half the DNA of a regular cell), while mitosis Meiosis is for what kind of cell division? mainly for the division of sex cells (sperm and egg)
http://dictionary.reference.com/browse/spores Competition: low
(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. Upgrade now! Related Words imperfect stage abjection aecidium aecium aerobiology aethalium amphithecium anemochorous anemochory anemophilous archespore arthrospore MORE Matching Quote "Why not a space flower? Why do we always expect metal ships?" -W.D
Sexual Reproduction
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/Sexual_Reproduction.html Competition: low
The tranquilizer, thalidomide, taken by many pregnant European women between 1954 and 1962, turned out to be a potent teratogen and was responsible for the birth of several thousand deformed babies. Virus infection of the mother, e.g., by rubella ("German measles") virus or exposure to certain chemicals may cause malformations in the developing embryo
http://dictionary.reference.com/browse/seed?s=t Competition: low
The seeds of gymnosperms (such as the conifers) develop on scales of cones or similar structures, while the seeds of angiosperms are enclosed in an ovary that develops into a fruit, such as a pome or nut. 26.being or providing capital for the initial stages of a new business or other enterprise: The research project began with seed donations from the investors
http://www.mansfield.ohio-state.edu/~sabedon/biol3060.htm Competition: low
comm.) Endosperm "The endosperm both nourishes the developing embryo and supplies energy to the developing seedling upon" its germination (in the species that retain an endosperm at seed maturity). Though clearly an advancement over the nonvascular plants, the seedless vascular plants are neither the descendants of the nonvascular plants nor nearly as successful (today, when measured in terms of numbers of species) as are the nonvascular plants
http://scienceray.com/biology/human-biology/how-sperm-meets-an-egg-to-fertilize-a-fetus-in-the-mothers-womb/ Competition: low
Do you have a list of references or sources from which the information and photographs were acquired? I have seen these photographs and read similar text in other publications. Pls i want baby .if there is anyother way i can try accept having sex during ovlation which i have been doing with my husband pls educate me.thanks vishu Says..
http://www.enchantedlearning.com/subjects/plants/glossary/indexs.shtml Competition: low
Reproduction occurs asexually (as the filament breaks apart forming new strands) and sexually (two filaments meet and merge as the cell walls decay and a protoplast moves from one organism to the other, resulting in a zygote - this occurs under adverse conditions). SECONDARY FORESTA secondary forest (also known as a jungle) is a forest whose canopy trees have been logged (cut), causing lush growth on the forest floor
http://www.ehow.com/way_5518259_better-ways-sperm-egg.html Competition: low
Process To increase the odds that sperm will reach the egg, have intercourse anywhere from two days before ovulation to 24 hours after and preferably more than once. Instead of assuming ovulation always takes place 14 days after the start of the last period, women should learn when they ovulate by tracking their monthly cycles and recording their waking temperature at the same time every morning
Reproduction in Plants - Biology Encyclopedia - cells, body, examples, function, process, animal, different, organisms, chromosomes, organs
http://www.biologyreference.com/Re-Se/Reproduction-in-Plants.html Competition: low
Some insect groups, such as bees, originated after flowering plants, their members developing mouthpart structures and behavior specialized for pollination. Bats select also for nocturnally opening flowers, but with a strong musky scent and copious nectar, positioned well outside the foliage for easy access, and drab or white color
http://library.thinkquest.org/5420/cellsplt.html Competition: low
Did you know that the largest suppliers of oxygen in the whole world are tiny plants known as photoplankton? They are found in the oceans and are really important to giving us the oxygen needed to keep life going on our planet. If you would like to see an actual photograph of a chloroplast viewed through the lens of an electron microscope, visit the Nanoworld Image Gallery (you'll need to register in order to view the gallery)
http://library.thinkquest.org/3715/glossary_text.html Competition: low
EXHALE To breathe out F FATS An oily liquid or greasy substance making up the main bulk of the tissue of animals, and widely distributed in the seeds of a plant. STIGMA The tip of the female part of the flower, which receives the male pollen grains STOMATA Tiny pores on the underside of the leaves (stomota-plural for stoma)
Seed Plants Tutorial - Biology Online
http://www.biology-online.org/11/14_seed_plants.htm Competition: low
A monoecious species of flower has both male and female flowers on the same plant, while a dioecious flower would have separate plants for male and female flowers. Angiosperms, like gymnosperms, are heterosporus, which means they produce two types of spores and their sporophytes are more dominant than those of gymnosperms
http://www.biology.iupui.edu/biocourses/N100H/ch9meiosis.html Competition: low
During sexual reproduction, fertilization of the ovum (n, 23 chromosomes) by the sperm (n, 23 chromosomes) restores the diploid number and creates a zygote (2n, 46) (awww..) that divides and grows by mitosis to form a multicellular human. During mitosis, all the chromosomes in a cell are copied, line up at the metaphase plate, split apart at the centromere, and segregate into two new (but genetically identical) cells..
http://www.ehow.com/about_6638860_function-egg-cell_.html Competition: low
This is because when a sperm cell introduces its genetic information to that of the egg, the egg must respond quickly so that cell division may begin and a new organism may form. Scientists simply have to introduce the genes or gene products that they are interested in studying to the egg cell and the cell will produce the proteins
http://quizlet.com/7360658/chapter-30-the-evolution-of-seed-plants-flash-cards/ Competition: low
cells of a gametophyte a.) 3, 4, 1, 2 b.) 3, 4, 2, 1 c.) 3, 1, 4, 2 d.) 3, 2, 1, 4 e.) 3, 1, 2, 4 c.) 3, 1, 4, 2 10.) In flowering plants the integuments of the ovule develop into a(n) a.) Fruit b.) Cotyledon c.) Sporophyte d.) Seed Coat e.) Endosperm b.) Cotyledon 11.) A stamen consists of a(n) a.) Stigma and filament b.) Stigma and anther c.) Stigma and style d.) Anther and filament e.) Ovary and sepal d.) Anther and Filament 12.) Where in an angiosperm would you find a megasporangium? a.) in the style of a flower b.) inside the tip of a pollen tube c.) enclosed in the stigma of a flower d.) within an ovule contained within an ovary of a flower e.) packed into pollen sacs within the anthers found on a stamen d.) Within an ovule contained within an ovary of a flower 13.) A fruit is most commonly a.) A mature ovary. 32 How many chromosomes should be in a generative cell nucleus? b.) 8 54.) In onions (Allium), cells of the sporophyte have 16 chromosomes within each nucleus
http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookglossS.html Competition: low
Silurian Period The geological time period of the Paleozoic Era following the Ordovician, between 435 and 395 million years ago, when plants colonized the land. Hormones that are produced in the gonads and promoted development and maintainence of the secondary sex characteristics and structures, prepare the female for pregnancy, and aid in development of gametes
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/Plants.html Competition: low
Horsetails (Classified as Equisetopsida although many botanists prefer the older term Sphenopsida.) The common name comes from the characteristic pattern of branching: whorls or rings of branchlets arising from an above-ground shoot. Monocots and Dicots Of over 400 families of angiosperms, some 80 of them fall into a single clade, called monocots because their seeds have only a single cotyledon
http://quizlet.com/13149494/biology-chapter-30-plant-diversity-ii-the-evolution-of-seed-plants-flash-cards/ Competition: low
A) it is pollinated by insects B) pollen grains are transferred from a different flower on the same plant C) its source of pollen is a different species of plant D) it is pollinated by wind E) pollen grains are transferred to a flower on a different plant pollen grains are transferred to a flower on a different plant The pollen tube releases two sperm cells into the embryo sac. ovary Which of the following best describes the function of fruits? A) protection and dispersal of seeds B) food storage for the plant to use over the winter C) reward for pollinators D) to distract herbivores from eating the leaves E) Depending on the plant species, any of the listed responses are possible
Do plants produce eggs and sperm through mitosis or through miosis? - Yahoo!7 Answers
http://au.answers.yahoo.com/question/index?qid=20110501020551AAm58Gh Competition: low
Plants reproduce either by asexual reproduction (meaning no gametes are involved and all plants produced by this method will be clones) or they use proteins and other nutrients to produce seeds which will be carried from the plant by various processes e.g. 2 years ago Report Abuse Asker's Rating: Asker's Comment: simple and nice 0 stars - mark this as Interesting! Email Comment (0) Save Add to My Yahoo!7 Add to Del.icio.us RSS There are currently no comments for this question
Seed Plants
http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20lectures/Seed%20Plants/seed%20plants.htm Competition: low
In seed plants, the gametophyte is usually microscopic and is retained within the tissues of the sporophyte.The megasporangium is surrounded by layers of sporophyte tissue called the integument. The wings aid it in being dispersed by the wind.The pollen grains are eventually released from the sporophyte and carried by the wind to the vicinity of the egg
Egg cell - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Ovum Competition: low
In situ GUS staining of two female sex organs (archegonia) of a transgenic plant expressing a translational fusion of FIE-uidA under control of the native FIE promoter In the moss Physcomitrella patens, the Polycomb protein FIE is expressed in the unfertilised egg cell (Figure, right) as the blue colour after GUS staining reveals. The Polycomb gene FIE is expressed (blue) in unfertilised egg cells of the moss Physcomitrella patens (right) and expression ceases after fertilisation in the developing diploid sporophyte (left)
Sperm - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Sperm Competition: low
In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. The midpiece has a central filamentous core with many mitochondria spiralled around it, used for ATP production for the journey through the female cervix, uterus and uterine tubes
Plant evolution: Information from Answers.com
Since all three groups have flowerlike structures, suggesting that the flower and insect pollination arose before the closed carpel, they have been called anthophytes. These methods attempt to reconstruct the branching of evolutionary lines (phylogeny) by using shared evolutionary innovations (for example, presence of a structure not found in other groups) as evidence that particular organisms are descendants of the same ancestral lineage (a monophyletic group, or clade)
Jurassic Park Plants
Because of multiciliate sperm, cycads show a nice connecting link with the more primitive spore-producing ferns, which must depend on free environmental water for the transport of their sperm, and the advanced seed plants in which the sperm are non-flagellated and non-motile. In a sense, the primitive ferns are like amphibians with external fertilization because their motile sperm require environmental water in order to swim to the egg
egg - definition of egg by the Free Online Dictionary, Thesaurus and Encyclopedia.
In mammals, eggs produced in the ovaries are fertilized inside the body and (except in the cases of monotremes) develop in the reproductive tract until birth. The round or oval female reproductive body of various animals, including birds, reptiles, amphibians, fishes, and insects, consisting usually of an embryo surrounded by nutrient material and a protective covering.c
They are both surrounded by two bilayer membranes suggesting one membrane originated from the plasma membrane of the cell and one from the plasma membrane of the hypothetical invader. This is the endoplasmic reticulum (ER for short) and its central space or lumen is a continuation of the lumen between the membranes of the nuclear envelope
PBS - harvest of fear: engineer a crop (hot science)
About 8,000 years ago, for example, farmers in Central America crossed two mutant strains of a weedy-looking plant called Balsas teosinte and produced the first corn on the cob. Today scientists can produce a change quickly by selecting a single gene that may result in a desired trait and inserting that gene directly into the chromosome of an organism
What kind of cells are formed in meiosis
When one cell undergoes meiosis, it turns into et What kind of cells do meiosis produce? The process of meiosis produces 4 haploid cells (only half the DNA of a regular cell), while mitosis Meiosis is for what kind of cell division? mainly for the division of sex cells (sperm and egg)
(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. Upgrade now! Related Words imperfect stage abjection aecidium aecium aerobiology aethalium amphithecium anemochorous anemochory anemophilous archespore arthrospore MORE Matching Quote "Why not a space flower? Why do we always expect metal ships?" -W.D
Sexual Reproduction
The tranquilizer, thalidomide, taken by many pregnant European women between 1954 and 1962, turned out to be a potent teratogen and was responsible for the birth of several thousand deformed babies. Virus infection of the mother, e.g., by rubella ("German measles") virus or exposure to certain chemicals may cause malformations in the developing embryo
The seeds of gymnosperms (such as the conifers) develop on scales of cones or similar structures, while the seeds of angiosperms are enclosed in an ovary that develops into a fruit, such as a pome or nut. 26.being or providing capital for the initial stages of a new business or other enterprise: The research project began with seed donations from the investors
comm.) Endosperm "The endosperm both nourishes the developing embryo and supplies energy to the developing seedling upon" its germination (in the species that retain an endosperm at seed maturity). Though clearly an advancement over the nonvascular plants, the seedless vascular plants are neither the descendants of the nonvascular plants nor nearly as successful (today, when measured in terms of numbers of species) as are the nonvascular plants
Do you have a list of references or sources from which the information and photographs were acquired? I have seen these photographs and read similar text in other publications. Pls i want baby .if there is anyother way i can try accept having sex during ovlation which i have been doing with my husband pls educate me.thanks vishu Says..
Reproduction occurs asexually (as the filament breaks apart forming new strands) and sexually (two filaments meet and merge as the cell walls decay and a protoplast moves from one organism to the other, resulting in a zygote - this occurs under adverse conditions). SECONDARY FORESTA secondary forest (also known as a jungle) is a forest whose canopy trees have been logged (cut), causing lush growth on the forest floor
Process To increase the odds that sperm will reach the egg, have intercourse anywhere from two days before ovulation to 24 hours after and preferably more than once. Instead of assuming ovulation always takes place 14 days after the start of the last period, women should learn when they ovulate by tracking their monthly cycles and recording their waking temperature at the same time every morning
Reproduction in Plants - Biology Encyclopedia - cells, body, examples, function, process, animal, different, organisms, chromosomes, organs
Some insect groups, such as bees, originated after flowering plants, their members developing mouthpart structures and behavior specialized for pollination. Bats select also for nocturnally opening flowers, but with a strong musky scent and copious nectar, positioned well outside the foliage for easy access, and drab or white color
Did you know that the largest suppliers of oxygen in the whole world are tiny plants known as photoplankton? They are found in the oceans and are really important to giving us the oxygen needed to keep life going on our planet. If you would like to see an actual photograph of a chloroplast viewed through the lens of an electron microscope, visit the Nanoworld Image Gallery (you'll need to register in order to view the gallery)
EXHALE To breathe out F FATS An oily liquid or greasy substance making up the main bulk of the tissue of animals, and widely distributed in the seeds of a plant. STIGMA The tip of the female part of the flower, which receives the male pollen grains STOMATA Tiny pores on the underside of the leaves (stomota-plural for stoma)
Seed Plants Tutorial - Biology Online
A monoecious species of flower has both male and female flowers on the same plant, while a dioecious flower would have separate plants for male and female flowers. Angiosperms, like gymnosperms, are heterosporus, which means they produce two types of spores and their sporophytes are more dominant than those of gymnosperms
During sexual reproduction, fertilization of the ovum (n, 23 chromosomes) by the sperm (n, 23 chromosomes) restores the diploid number and creates a zygote (2n, 46) (awww..) that divides and grows by mitosis to form a multicellular human. During mitosis, all the chromosomes in a cell are copied, line up at the metaphase plate, split apart at the centromere, and segregate into two new (but genetically identical) cells..
This is because when a sperm cell introduces its genetic information to that of the egg, the egg must respond quickly so that cell division may begin and a new organism may form. Scientists simply have to introduce the genes or gene products that they are interested in studying to the egg cell and the cell will produce the proteins
cells of a gametophyte a.) 3, 4, 1, 2 b.) 3, 4, 2, 1 c.) 3, 1, 4, 2 d.) 3, 2, 1, 4 e.) 3, 1, 2, 4 c.) 3, 1, 4, 2 10.) In flowering plants the integuments of the ovule develop into a(n) a.) Fruit b.) Cotyledon c.) Sporophyte d.) Seed Coat e.) Endosperm b.) Cotyledon 11.) A stamen consists of a(n) a.) Stigma and filament b.) Stigma and anther c.) Stigma and style d.) Anther and filament e.) Ovary and sepal d.) Anther and Filament 12.) Where in an angiosperm would you find a megasporangium? a.) in the style of a flower b.) inside the tip of a pollen tube c.) enclosed in the stigma of a flower d.) within an ovule contained within an ovary of a flower e.) packed into pollen sacs within the anthers found on a stamen d.) Within an ovule contained within an ovary of a flower 13.) A fruit is most commonly a.) A mature ovary. 32 How many chromosomes should be in a generative cell nucleus? b.) 8 54.) In onions (Allium), cells of the sporophyte have 16 chromosomes within each nucleus
Silurian Period The geological time period of the Paleozoic Era following the Ordovician, between 435 and 395 million years ago, when plants colonized the land. Hormones that are produced in the gonads and promoted development and maintainence of the secondary sex characteristics and structures, prepare the female for pregnancy, and aid in development of gametes
Horsetails (Classified as Equisetopsida although many botanists prefer the older term Sphenopsida.) The common name comes from the characteristic pattern of branching: whorls or rings of branchlets arising from an above-ground shoot. Monocots and Dicots Of over 400 families of angiosperms, some 80 of them fall into a single clade, called monocots because their seeds have only a single cotyledon
A) it is pollinated by insects B) pollen grains are transferred from a different flower on the same plant C) its source of pollen is a different species of plant D) it is pollinated by wind E) pollen grains are transferred to a flower on a different plant pollen grains are transferred to a flower on a different plant The pollen tube releases two sperm cells into the embryo sac. ovary Which of the following best describes the function of fruits? A) protection and dispersal of seeds B) food storage for the plant to use over the winter C) reward for pollinators D) to distract herbivores from eating the leaves E) Depending on the plant species, any of the listed responses are possible
Do plants produce eggs and sperm through mitosis or through miosis? - Yahoo!7 Answers
Plants reproduce either by asexual reproduction (meaning no gametes are involved and all plants produced by this method will be clones) or they use proteins and other nutrients to produce seeds which will be carried from the plant by various processes e.g. 2 years ago Report Abuse Asker's Rating: Asker's Comment: simple and nice 0 stars - mark this as Interesting! Email Comment (0) Save Add to My Yahoo!7 Add to Del.icio.us RSS There are currently no comments for this question
Seed Plants
In seed plants, the gametophyte is usually microscopic and is retained within the tissues of the sporophyte.The megasporangium is surrounded by layers of sporophyte tissue called the integument. The wings aid it in being dispersed by the wind.The pollen grains are eventually released from the sporophyte and carried by the wind to the vicinity of the egg
Egg cell - Wikipedia, the free encyclopedia
In situ GUS staining of two female sex organs (archegonia) of a transgenic plant expressing a translational fusion of FIE-uidA under control of the native FIE promoter In the moss Physcomitrella patens, the Polycomb protein FIE is expressed in the unfertilised egg cell (Figure, right) as the blue colour after GUS staining reveals. The Polycomb gene FIE is expressed (blue) in unfertilised egg cells of the moss Physcomitrella patens (right) and expression ceases after fertilisation in the developing diploid sporophyte (left)
Sperm - Wikipedia, the free encyclopedia
In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. The midpiece has a central filamentous core with many mitochondria spiralled around it, used for ATP production for the journey through the female cervix, uterus and uterine tubes
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