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| | MSN Encarta - Angiosperm |
 | | The characteristic feature of angiosperms is the flower, the function of which is the reproduction of the plant through the development of seeds. | | | The seeds of angiosperms develop in an ovary, a part of the carpel that surrounds and protects the egg-containing ovules. | | | The development of seeds from ovules enclosed in an ovary, which enlarges into a fruit as the fertilized seeds grow, is a feature unique to the angiosperms. |
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http://uk.encarta.msn.com/encyclopedia_761570423/Angiosperm.html
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| | angiosperm -- Encyclopædia Britannica |
| | The angiosperms are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow... | | | The angiosperms are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow ovary… | | | Although the angiosperms are known as flowering plants, they are difficult to distinguish from gymnosperms solely on the basis of bearing flowers, for, like the strobilus, a flower is a compressed stem, with crowded, spore-bearing appendages. |
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http://www.britannica.com/eb/article-9111083?tocId=9111083
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| | angiosperm |
| | Angiosperms are divided into monocotyledons (single seed leaf in the embryo) and dicotyledons (two seed leaves in the embryo). | | | Like gymnosperms, they are seed plants, but differ in that ovules and seeds are protected within the carpel. | | | Flowering plant in which the seeds are enclosed within an ovary, which ripens into a fruit. |
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http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0023600.html
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| | Evolution and Phylogenetic Relationships |
| | The main difference between gymnosperms and angiosperms is that the ovules and the seeds of gymnosperms are unprotected unlike the seeds of angiosperms which are enclosed in fruit. | | | Angiosperm lack motile sperm so they depend on alternative methods for fertilization like wind, insect and animal transfer of pollen, etc. Therefore, the rise of angiosperm had to have taken place after the existence of animals and insects. | | | Angiosperm contain flowers, seeds enclosed in fruit, and pollen whereas gymnosperm just have seeds with seed coats. |
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http://www.personal.psu.edu/users/k/n/knj106/evol.html
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| | ANGIOSPERM LIFE CYCLE |
| | The gametophyte within the flower is reduced to a pollen grain (that produces sperm nuclei) or an ovule (that produces an egg). | | | In angiosperms, the sporophyte is the large, mature organism with flowers that you easily recognize. | | | In angiosperms, double fertilization takes place, where one sperm fertilizes the egg and a second sperm fertilizes the polar nuclei. |
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http://www.lcsc.edu/jschultz/botlab.6.htm
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| | When Did Angiosperms First Evolve? |
| | The pattern of angiosperm radiation is consistent with the pattern of anthophilous insect radiation and the pattern of appearance of derived floral characters and taxa specifically associated with the most advanced anthophilous insects. | | | The four main groups of insects involved in angiosperm pollination (in decreasing order of importance) are the Hymenoptera (bees), Lepidoptera (butterflies and moths), Diptera (flies), and Coleoptera (beetles). | | | I have no problem with the theory that angiosperms underwent their first major radiation and diversification in the Cretaceous to which all extant flowering plants owe their existence. |
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http://www.unifiedworlds.com/cornet/Why02/why.htm
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| | SIUC, Plant Biology, Sipes, early bee/angiosperm relationships |
| | In spite of the obvious relationship between bees and flowering plants, and the potential significance of bee pollination on flowering plant diversity, the historical interactions between bees and angiosperms in the earliest stages of bee evolution have not been investigated in detail. | | | Bees are currently the most important pollinators of many angiosperms, and bees rely exclusively on angiosperms for adult and larval nutrition. | | | This is primarily because the bee fossil record is fragmentary (making accurate dating of bee origins difficult), and the higher level phylogenetic relationships within bees have not been well established. |
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http://www.science.siu.edu/plant-biology/Faculty/sipes/earlyangiosperms.html
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| | Reproductive Organs Of An Angiosperm |
| | Angiosperms - Flowers, which are the reproductive structures of an angiosperm and consist of... | | | SparkNotes: Introduction to Plants: Introduction to Plants - Angiosperm fruits, developed from ovaries, protect the seeds and help in their dispersal. | | | Plant Reproduction - Angiosperm reproductive organs differ from those of animals in that angiosperm male and female structures usually occur in the same individual flower,... |
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http://www.pianothings.com/reproductive-organs-of-an-angiosperm.html
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| | Biology Lab 8 71:125 |
| | of angiosperms are much reduced in size and cell number. | | | In many angiosperms the fruits are variously modified during development to facilitate a more effective means of seed dispersal. | | | The chief agents in seed and fruit dispersal are wind, water and animals. |
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http://www.umanitoba.ca/faculties/science/biological_sciences/lab8/biolab8_5.html
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| | McPherson: Basal Angiosperm Relationships |
| | Amborella is a weedy, woody, vessel-less, angiosperm with unisexual flowers borne on separate plants (dioecious). | | | That is, just because a vessel-less woody shrub with unisexual flowers from New Caledonia is the basal angiosperm doesn't mean that the first angiosperms were vessel-less woody shrubs with unisexual flowers from New Caledonia. | | | Phylogenetic trees derived from molecular data show a long branch leading to the angiosperms from the other seed plants, suggesting that the angiosperms are highly divergent from other seed plants (Mathews and Donoghue, 1995). |
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http://www.biology.ualberta.ca/courses.hp/biol606/OldLecs/Lecture2K.07.McPherson.html
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| | angiosperm |
| | Unlike gymnosperms, the angiosperm does not depend as much on luck and wind to pollinate itself, instead, the angiosperm attracts another organism such as a bee to spread pollen from one plant to another. | | | The angiosperm is the flowering plants which we see everywhere around us. | | | The angiosperm has an enclosed ovary to protect the embryo which is developing. |
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http://www2.gvsu.edu/~laphame/angiosperm.html
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| | Angiosperm Life Cycle |
| | Angiosperms, literally "vessel seeds", are herbaceous or woody vascular plants producing flowers and fruits. | | | Understand how ovule develops and becomes the seed, and the ovary becomes the fruit. | | | How many nuclei are present in the pollen grain? |
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http://arnica.csustan.edu/boty1050/Lab/angiosperm_lc.htm
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| | Angiosperm Families - References |
| | Brewbaker, J.L. The distribution and phylogenetic significance of binucleate and trinucleate pollen grains in the Angiosperms. | | | Structure of starch grains and the classification of vascular plant families. | | | Leroy, Jean-F. The origin of Angiosperms: an unrecognized ancestral Dicotyledon, Hedyosmum (Chloranthales), with a strobiloid flower is living today. |
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http://delta-intkey.com/angio/www/refs.htm
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| | Paleobiology: Dark and disturbed: a new image of early angiosperm ecology |
| | Previous Interpretations of Early Angiosperm Ecology.-The traditional representation of early angiosperms is that of woody magnoliids, with large bisexual flowers consisting of numerous free perianth parts, stamens, and carpels, as in extant Magnoliales and Winteraceae (e.g., Arber and Parkin 1907; Takhtajan 1969; Thorne 1976; Cronquist 1988; Gottsberger 1988). | | | The paleoherb hypothesis was argued to be consistent with small angiosperm seed sizes and the paucity of angiosperm wood in Early Cretaceous floras (Taylor and Hickey 1990, 1992, 1996; Doyle et al. | | | Significantly, several morphological characteristics of Amborella, Nymphaeales, Austrobaileyales, and Chloranthaceae are known in Early Cretaceous fossil flowers, pollen, seeds, and leaves (Upchurch 1984b, 1995; Mohr and Friis 2000; Friis et al. |
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http://www.findarticles.com/p/articles/mi_qa4067/is_200401/ai_n9407754
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| | Lab X - Anthophytes, Glossopterids and Others (5) |
| | The pollen of angiosperms is different from that of all other seed plants in having a tectate-columellate structure. | | | If we are to look for the earliest true angiosperms, we must first know what separates the flowering plants from the other seed plants. | | | The rarity of fossil flowers has been a frustration for angiosperm paleobotanists because flowers (reproductive structures in general) are among the most important features for classifying and recognizing relationships among flowering-plant groups. |
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http://www.ucmp.berkeley.edu/IB181/VPL/Cup/Cup5.html
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| | PBIO 250 Lecture Notes Origin & Classification -- Spring 1999 |
| | Angiosperm flowers and tricolpate pollen of buxaceous affinity from the Potomac Group (mid-Cretaceous) of eastern North America. | | | the probable key to the differentiation of angiosperms from gymnosperms was the evolution of a bisexual flower (androecium and gynoecium on same flower); the trend of small flower continued in the Piperopsida but changed to larger flowers to advertise in a more crowded environment (e.g. | | | Crane, P.R. Phylogenetic analysis of seed plants and the origin of angiosperms. |
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http://www.biologie.uni-hamburg.de/b-online/systems/orig.html
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| | Division Anthophyta |
| | There are two classes of angiosperms: the monocots, whose seeds have only one tiny cotyledon, and the far more numerous dicots, whose seeds have two tiny cotyledons. | | | The evolution of the fruit allowed angiosperms to cultivate more relationships with animals: many animals like to eat the fruits, but the hard seed coats pass through animal digestive tracts and exit the animal, with some ready-made fertilizer, a good distance from the original plant. | | | Division Anthophyta, the angiosperms, or flowering plants, contains 99.5% of all extant plant species, as well as 80% of all living plants. |
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http://www.sidwell.edu/us/science/vlb5/Labs/Classification_Lab/Eukarya/Plantae/Anthophyta
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| | angiosperm on Encyclopedia.com |
| | The angiosperms constitute the division Magnoliophyta and include all agricultural crops (including the cereal grains and other grasses), all garden flowers and most horticultural plants, all the common broad-leaved shrubs and trees, and all the usual field, garden, and roadside weeds. | | | Fossils of over 120 million-year-old angiosperm plant discovered in NE China. | | | The angiosperms are the most economically important group of all plants. |
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http://www.encyclopedia.com/html/a1/angiospe.asp
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| | Angiosperm Objectives: |
| | Know the methods by which pollen and seeds are dispersed in angiosperms. | | | Be able to identify the microgametophyte, megagametophyte, mature pollen grain, and ovule. | | | Know what is meant by double fertilization and be able to identify the sporophyte and gamteophyte generations in angiosperms. |
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http://www.utpb.edu/courses/biol1407/images/Angiosperm.html
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| | Angiosperms |
| | Angiosperms the primary food source for animals and provides oxygen for us to breathe. | | | They have stems that hold the plants up and move the nutrients and water about the plant. | | | They have roots that hold the plant in place and take in needed minerals and water. |
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http://www.mcwdn.org/Plants/Angiosperm.html
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| | Biol 1A - Lecture 22 |
| | angiosperm gymnosperm pollen tube anther integument seed coat antipodal cells megagametophyte self-incompatibility cotyledon microsporangium stamen dicot monocot stigma endosperm ovary style flower ovule synergids fruit pistil tapetum funiculus polar nuclei triploid generative cell pollen tube cell | | | How are angiosperms different from other seed plants? | | | If they are so different, then why are they still considered seed plants? |
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http://www.ucmp.berkeley.edu/people/brs/biol1a/Lect22.html
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| | Angiosperm Anatomy |
| | There are between 200 000 and 300 000 different species of angiosperms (flowering plants) known. | | | In comparison with other organisms, only insects number more species than angiosperms. | | | Although a wide variety of flowering plants occur on earth, all have more or less the same structure and consist of three basic organs: roots, stems and leaves. |
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http://www.botany.uwc.ac.za/sci_ed/grade10/anatomy
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| | Encyclopedia article on Plant [EncycloZine] |
| | The angiosperms, comprising the flowering plants, were the last major group of plants to appear, emerging from within the gymnosperms during the Jurassic and diversifying rapidly during the Cretaceous. | | | These differ in that the seed embryo is enclosed, so the pollen has to grow a tube to penetrate the protective seed coat; they are the predominant group of flora in most biomes today. | | | Sequoia and its allies, magnolia, oak, and palms are often found. |
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http://encyclozine.com/Plants
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| | Flowering Plant Reproduction II |
| | Angiosperm male gametophytes have two haploid nuclei (the germ nucleus and tube nucleus) contained within the exine of the pollen grain (or | | | Female gametophytes of flowering plants develop within the ovule ( | | | The style serves to move the stigma some distance from the ovary. |
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http://www.estrellamountain.edu/faculty/farabee/biobk/BioBookflowersII.html
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| | INDIAN ASSOCIATION FOR ANGIOSPERM TAXONOMY |
| | A new species and a new report of a species of petrified Angiosperm woods from the Cuddalore Sandstones, Tamil Nadu, India. | | | Comparison of Indian and southern African fossil Angiosperm woods. | | | Additions and preliminary study of an Oligo-Miocene Palynoflora from Chiapas, Mexico. |
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http://members.rediff.com/iaat/content6.html
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| | Paleontology and Science |
| | Implication of competition for insects (beetles) and convergence of flower form. | | | Delayed seed development until after pollination is no longer unique to Angiosperms. | | | not an angiosperm, but an advanced Cheirolepidaceous conifer that produced carpel-like ovuliferous scales with paired stigmas? |
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http://www.monmouth.com/~bcornet/index1d.htm
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| | Angiosperm Fossil Record |
| | In Search of the First Flower: A Jurassic Angiosperm, Archaefructus, from Northeast China. | | | These ancestors do not resemble the flowering plants of today. | | | It is generally believed that angiosperms developed 130 million to 140 million years ago. |
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http://www.portup.com/~emart/chris/fossil.html
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| | Allwords.com Definition of angiosperm |
| | Any member of a division of plants that characteristically produce flowers and bear ovules that develop into seeds which are enclosed within an ovary the wall of which develops into a fruit. | | | Your Query of 'angiosperm' Resulted in 1 Matches |
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http://www.allwords.com/word-angiosperm.html
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| | Ecological Roles of Angiosperm |
| | Provide sources of food, vegetables and fruits, to many animals, including humans. | | | Angiosperm play a large role in the ecosystem and are an essential taxonomic group. |
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http://www.personal.psu.edu/users/k/n/knj106/eco.html
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| | Angiosperm Reproduction |
| | Summary of evolutionary trends among angiosperms (flowering plants): | | | Take a short field hike to pick two wildflowers on a sunny day: |
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http://biology.clc.uc.edu/Fankhauser/Labs/Bio_Lab113/Angiosperm_Reproduction.htm
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| | Angiosperm Questions |
| | a) Describe the difference between 'woody' and 'herbaceous' angiosperms and list two examples of each type that are native to Saskatchewan. | | | There are a number of groupings within the angiosperms based on certain characteristics. |
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http://www.saskschools.ca/curr_content/biology20/angiosperm_ques.htm
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| | EVALUATING SHIFTS IN ANGIOSPERM DIVERSIFICATION RATES |
| | The distribution of pair asymmetries (i.e., ratio of the smaller taxon to its larger sister taxon) is a hollow curve, skewed toward 1.0. | | | Simulations indicate that a constant rates model accurately predicts species distributions among angiosperm genera but not among families, paralleling work on some animal clades (e.g., rodents). | | | Here we use species richness estimates of extant angiosperm genera and families and sister taxon relationships from published molecular phylogenies to test (1) how sister pair tests are affected by inaccuracies in phylogenetic relationships and composition and (2) how well distributions of species among higher taxa match model predictions. |
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http://gsa.confex.com/gsa/2001AM/finalprogram/abstract_27950.htm
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| | Angiosperm or Gymnosperm? |
| | Angiosperms are trees have broad leaves that usually change color and die every autumn. | | | Some angiosperms that hold their leaves include rhododendron, live oak, and sweetbay magnolia. | | | Can you guess these tree types from the pictures below? |
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http://www.fw.vt.edu/dendro/forsite/idtype.htm
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| | Conservation patterns in angiosperm rDNA ITS2 sequences -- Hershkovitz and Zimmer 24 (15): 2857 -- Nucleic Acids ... |
| | The previously cited advantages of ITS included its high information content at lower phylogenetic levels and ease of amplification in diverse eukaryotes (2). | | | Sequences from Arceuthobium (Viscaceae) were not included because, like other DNA sequences from parasitic plants, they were exceptionally divergent from those of angiosperms in general (19). | | | The yeast model, however, does include a long stem with a distal conserved pairing region, analogous to the stem formed between c3 and c6 in the angiosperm model and the c4-c5 pairing. |
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http://nar.oxfordjournals.org/cgi/content/full/24/15/2857
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| | Angiosperm C-Value Database |
| | Papers from the discussion meeting were published in a special issue ‘Genome size in plants’ in Annals of Botany volume 82 (Supplement A; see Bennett and Leitch, 1998). | | | Nuclear DNA amounts in angiosperms and their modern Uses — 807 new estimates. | | | Bennett et al., 2000) and gymnosperms (Murray, 1998) both as an aid to users and to facilitate combining such lists into a single plant DNA C-values database. |
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http://www.rbgkew.org.uk/cval/pteridophytes/intro.html
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| | Angiosperm Genome Size Discussion Meeting and Workshop at Kew, 9th - 12th September 1997 |
| | Prior to the discussion meeting, 19 scientists (from Argentina, Austria, Czech Republic, India, Italy, Mexico, New Zealand, UK and USA) attended the Kew Angiosperm Genome Size Workshop in the Jodrell Laboratory. | | | DNA amount per diploid genome variation in cytotaxonomy of angiosperm plants. | | | New targeted work was essential to improve representation of both the angiosperm flora and of the other lesser-known plant groups. |
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http://www.rbgkew.org.uk/cval/conference.html
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| | Angiosperm Life Cycle |
| | The triploid fusion nucleus divides mitotically to form endosperm which is used as a nutritive tissue for the growing embryo {0615}. | | | This DOUBLE FERTILIZATION is a feature found only in angiosperms. | | | One fuses with the egg forming a zygote {0261}, the other fuses with the already fused polar nuclei making a triploid fusion nucleus. |
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http://www.science.siu.edu/plant-biology/PLB117/Nickrent.Lecs/AngioLC.html
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| | Molecular evidence for pre-Cretaceous angiosperm origins |
| | However, because of the paucity of fossilized angiosperm reproductive structures from lower Cretaceous sediments | | | FLOWERING plants or angiosperms have dominated the Earth's flora since at least the late Cretaceous | | | and the absence of generally recognized angiosperm fossils from pre-Cretaceous strata |
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http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v339/n6219/abs/339046a0.html
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| | flower encyclopedia |
| | We area unit your Arizona AZ market keeper | | | how to send angiosperm to soul out of state |
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http://www.tordellasurfaces.com/flower-encyclopedia.htm
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| | INDIAN ASSOCIATION FOR ANGIOSPERM TAXONOMY |
| | Publish a journal, proceedings, transactions and such other works that will help disseminate research findings and current ideas and concepts that are relevant to Angiosperms. | | | Indian Association for Angiosperm Taxonomy (IAAT) was established in the year 1990 under the Societies Registration Act XXI of 1860. | | | Provide a link between Angiosperm taxonomists of India with their counterparts abroad and |
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http://www.iaat.org.in
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| | Pharyngula::Angiosperm phylogeny |
| | While I don't know as much about flowering plants as I should, I can at least appreciate their importance and recognize an interesting evolutionary story when I see it. | | | I've confessed before to my zoological bias, which means plants and bacteria don't get the attention they deserve here. | | | As a zoologist myself, I confess to shameful ignorance of plants, but I assume that "angiosperm phylogeny" is a botanical equivalent to "penis evolution". |
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http://pharyngula.org/index/weblog/comments/angiosperm_phylogeny
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