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gymnosperm
gymnosperm
The Oxford Pocket Dictionary of Current English
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2009
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© The Oxford Pocket Dictionary of Current English 2009, originally published by Oxford University Press 2009. (Hide copyright information)
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gym·no·sperm
/ ˈjimnəˌspərm/
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n. Bot.
a plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.
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Gymnosperm Orthologues of Class B Floral Homeotic Genes and Their Impact on Understanding Flower Origin
Magazine article from: Critical Reviews in Plant Sciences; 1/1/2004; ; 700+ words
; ...extant seed plants. Gymnosperms do not develop petals...is the function of gymnosperm B genes? Recent experiments...from diverse extant gymnosperms are exclusively expressed...strongly suggest that gymnosperm and angiosperm B genes...likely that in extant gymnosperms B genes have a ...
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Gymnosperms of southeast Alabama.
Magazine article from: Journal of the Alabama Academy of Science; 7/1/2005; ; 700+ words
; ...comprehensive and detailed work on gymnosperms of the state. Although illustrations...diversity and distribution of gymnosperms found in southeast Alabama...the need for a more current gymnosperm flora and published Gymnosperms of Northeast Alabama and...
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Gymnosperms of northeast Alabama and adjacent highlands.(conifer plants)
Magazine article from: Journal of the Alabama Academy of Science; 1/1/2002; ; 700+ words
; ...herbarium; filled square ("") = documented at another herbarium; open circle ("") reported in literature. KEY TO GYMNOSPERM FAMILIES 1. Leaves fan-shaped and deciduous; venation dichotomous (forking) Ginkgoaceae 1. Leaves needle-like or...
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A new scheme of classification of living Gymnosperms at family level
Magazine article from: Kew Bulletin; 1/1/2004; ; 700+ words
; ...A new scheme of classification of gymnosperms is proposed in this paper, based mainly...nerved leaved evolutionary line in gymnosperms. Twelve families are involved in the...brief review of phylogenetic systems in Gymnosperms The Gymnosperms were defined by Brown...
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Methods of biogeographic analysis and their application to the distribution of Mexican gymnosperms/Los metodos de analisis biogeografico y su aplicacion a la distribucion de las gimnospermas en Mexico/Os metodos de analise biogeografico e sua aplicacao na distribuicao das gimnospermas no Mexico.
Magazine article from: Interciencia; 3/1/2006; ; 700+ words
; ...to the geographic distribution of the gymnosperms of Mexico are presented, and the convenience...Particularly, in the case of Mexican gymnosperms, parsimony analysis of endemicity and...knowledge on the biogeography of Mexican gymnosperms. RESUMO A biogeografia e a disciplina...
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Functional Characterization of Nine Norway Spruce TPS Genes and Evolution of Gymnosperm Terpene Synthases of the TPS-d Subfamily1[w]
Magazine article from: Plant Physiology; 8/1/2004; ; 700+ words
; ...synthase and longifolene synthase have not been previously described, and this linalool synthase is the first described from a gymnosperm. These functionally diverse TPS account for much of the structural diversity of constitutive and methyl jasmonate-induced...
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Plant genome; biodiversity and evolution; v.1, part D: Phanerogams (Gymnosperm) and (Angiosperm-Monocotyledons).(Brief Article)(Book Review)
Magazine article from: SciTech Book News; 12/1/2007; 537 words
; 9781578084203 Plant genome; biodiversity and evolution; v.1, part D: Phanerogams (Gymnosperm) and (Angiosperm-Monocotyledons) Ed. by A.K. Sharma and Archana Sharma. Science Publishers, Inc. 2006 350 pages $95...
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Microarray Analyses of Gene Expression during Adventitious Root Development in Pinus contorta1[w]
Magazine article from: Plant Physiology; 7/1/2004; ; 700+ words
; ...known about development in gymnosperms. Few gymnosperm species have been subjected...molecular genetic analysis. Gymnosperms have several disadvantages...that extant seed plants (gymnosperms and angiosperms) share a...
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An aquaglyceroporin is abundantly expressed early in the development of the suspensor and the embryo proper of loblolly pine
Magazine article from: Plant Physiology; 12/1/2001; ; 700+ words
; ...angiosperm and gymnosperm embryo ontogeny...many features, gymnosperms have notable...angiosperms, gymnosperm embryogenesis...Also common in gymnosperm embryogeny is...not unique to gymnosperms, their embryos...
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Conifer R2R3-MYB transcription factors: sequence analyses and din wood-forming tissues of white spruce ( Picea glauca ).(Research article)
Magazine article from: BMC Plant Biology; 3/30/2007; ; 700+ words
; ...lignifying process in gymnosperm trees. Lignins play...regulating lignification in gymnosperms, and their potential...structure of the family in gymnosperms. Therefore, a broader...and other tissues of gymnosperms seems essential for...understanding of their roles in gymnosperm lignin ...
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Gymnosperms
Book article from: Plant Sciences
Gymnosperms Gymnosperms are seed plants...flowers. The term gymnosperm means "naked seed...when the seeds of gymnosperms are immature they...group of living gymnosperms and the first of the living gymnosperm groups to appear...
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gymnosperm
Book article from: World Encyclopedia
gymnosperm Seed plant with naked...Most evergreens are gymnosperms. However, larch and...into two main groups: gymnosperms and angiosperms . In the...classification system, gymnosperms comprise three distinct...
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Gymnosperm
Encyclopedia entry from: The Gale Encyclopedia of Science
Gymnosperm Gymnosperms are one of the two major groups of...the other is the angio-sperms. Gymnosperm literally means “ naked...an ovary as in the angiosperms. Gymnosperms became common about 290 million years...
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Pinophyta
Book article from: The Columbia Encyclopedia, Sixth Edition
...organisms commonly called gymnosperms. The gymnosperms, a group that includes the...pollination, hence the term gymnosperm, meaning naked seed. Pollination...bearing structures of many gymnosperms are organized into a cone...
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Angiosperm
Encyclopedia entry from: The Gale Encyclopedia of Science
...the angiosperms over the gymnosperms was the evolution of the...new genetic makeup. The gymnosperms dealt with their immobility...produce as much pollen as gymnosperms, and the resources they...rapidly dominant over their gymnosperm ancestors. Les C. Cwynar
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