angiosperm


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angiosperm

(ăn`jēəspûrm'), term denoting seed plants in which the ovules, or young seeds, are enclosed within the ovary (that part of the pistil specialized for seed production), in contrast to the gymnosperms, in which the seeds are not enclosed within an ovary. The angiosperms constitute the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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 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. The angiosperms are the most economically important group of all plants.

angiosperm

[′an·jē·ō‚spərm]
(botany)
The common name for members of the plant division Magnoliophyta.

angiosperm

A class of seed plants (having seeds enclosed in an ovary) which includes most of the world’s flowering plants.
References in periodicals archive ?
Comparison of selected soil properties from the 3 Turangi stands of different age sampled under manuka and kanuka in February 1997 and from sites under indigenous forests of mixed angiosperm and conifer species growing in soils formed in rhyolitic tephras of volcanic origin (e.
Most studies concerning frugivory and endozoochory center on avian and mammalian systems (Braun and Brooks, 1987) partly because they are viewed as the most important dispersers of seeds of modern gymnosperms and angiosperms (Fleming and Lips, 1991); however, reptiles also can play an important selective force in evolution of angiosperms (Tiffney, 1986).
This will pave the way for the recovery, restoration and conservation of this and other economically important and critically endangered, narrow endemic angiosperms of Kashmir, thereby providing long-term backup collections for sustained use by the local populace.
Parietal tapeta are the dominant type in land plants and occur in the extant 'basal' angiosperm groups and in most fossil taxa.
One promising compound, conophthorin, is associated with the bark of a variety of angiosperm trees and is also produced by several Scolytinae (Huber et al.
A number of torus-bearing angiosperm species are xerophytes, and the presence of a torusbearing pit membrane can be viewed as another mechanism for control of water resources under arid conditions.
He uses the Angiosperm Phylogeny Group classification, the most widely recognized system for flowering plants.
The site has detailed information on 35 angiosperm families, usually with between 10 and 50 images related to the family.
Among the topics discussed by this volume's 33 papers are the importance of ecological and phylogenetic conditions for the occurrence and frequency of sexual cannibalism, responses of humid tropical trees to rising carbon dioxide, the role of propagule pressure in biological invasions, nongenetic inheritance and its evolutionary implications, spontaneous mutation accumulation studies in evolutionary genetics, geologic and biologic controls on the evolution of reefs, molecular estimation of dispersal for ecology and population genetics, the origin and subsequent diversification of the angiosperm flower, the evolutionary genetics of emerging viruses, belowground herbivory and plant defenses, genetic consequences of range expansions, and the role of animal pollination in plant speciation.
Even in Aardsmas virtual history, there would be evidence of an origin of angiosperms that would include an observable first appearance of angiosperm plants and their pollen and evidence of the proliferation of flowering plant groups over some period of virtual history.