angiosperm
Americannoun
noun
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Any of a large group of plants that produce flowers. They develop seeds from ovules contained in ovaries, and the seeds are enclosed by fruits which develop from carpels. They are also distinguished by the process of double fertilization. The majority of angiosperms belong to two large classes: monocotyledons and eudicotyledons. The angiosperms are the largest phylum of living plants, existing in some 235,000 species. They range from small floating plants only one millimeter (0.04 inch) in length to towering trees that are over 100 meters (328 ft) tall.
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Compare gymnosperm
Other Word Forms
- angiospermous adjective
Etymology
Origin of angiosperm
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Example Sentences
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By integrating phylogenetic data and comparative analyses, the research team discovered that nectaries originated concurrently in ferns and angiosperms, but ferns experienced a significant lag in diversification compared to their flowering plant counterparts.
From Science Daily
This mechanism ensures the successful fertilization of angiosperms by facilitating the specific coupling between ovules and individual pollen tubes.
From Science Daily
The sprouting of angiosperms happened so fast that the origins of certain groups has long been mired in mystery.
From Science Magazine
This Angiosperm Terrestrial Revolution was in part driven by a unique innovation in angiosperm leaves: these present a netted hierarchical venation, which allows angiosperm to fix carbon dioxide in a much more efficient way.
From Science Daily
It may have helped them weather the dramatic shift in climate or it may have allowed them to compete better with the faster-growing angiosperm plants that flourished after the extinction, "or it could be both."
From Science Daily
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.