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 ?
"The origin of angiosperms has long been an academic 'headache' for many botanists," concludes senior author Xin Wang, Research Professor at the Nanjing Institute of Geology and Paleontology.
In fact, one can ask what, if the all-tracheid secondary xylem of conifers is so successful that hydraulic safety margins in conifers are so much greater in conifers as a whole than in angiosperms (Hacke et al., 2015), is the function of axial parenchyma in conifers that have it?
Gasser, "Ancestral expression patterns and evolutionary diversification of YABBY genes in angiosperms," The Plant Journal, vol.
Key words: Floristic, flora, Rawalakot, Himalaya, angiosperms.
Separate features are presented for gymnosperms versus angiosperms in relation to vegetative differences, reproductive differences, classification, and rare and non-native species.
Recently, a number of species in various genera of the angiosperms have been observed to have bordered pit pairs possessing an impermeable torus as well as a surrounding margo with openings the size of the pit membrane of typical angiosperms rather than the larger openings of the margos of gymnosperms.
About 40-70% of angiosperms are considered to be polyploids [14].
Interestingly, two distinct clades of L-form and H-form were identified in the phylogenetic analysis, suggesting that the L and H-oleosins in angiosperms may have evolved independently before the speciation of several taxa.
They also performed a more restrictive analysis limiting the comparison to clades feeding on angiosperms versus those with other hosts (including gymnospermous plants).
The phylogenetic tree obtained clearly separated the two major groups; angiosperms and gymnosperms/lycopods.
The book has a surprise pop up on opening the book, of a circular plan of angiosperms and gymnosperms illustrating the origin of trees on earth.
As temperatures rose into the Eocene, more plant groups appeared in the rock record--mainly angiosperms, the flowering plants that are the largest and most diverse plant group on Earth.