Definition of Heterospory

1. Noun. The development of both microspores and megaspores.

Generic synonyms: Monogenesis, Sporulation
Derivative terms: Heterosporous



Definition of Heterospory

1. [n -RIES]

Medical Definition of Heterospory

1. Condition in vascular plants where the spores are of two different sizes, the smaller producing male prothalli, the larger female prothalli. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Heterospory Pictures

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Lexicographical Neighbors of Heterospory

heterosite
heteroskedasticity
heterosmia
heterosomati
heterosomes
heterosomic
heterospecific
heterospecific antibody
heterospecific graft
heterospecifics
heterosphere
heterospheres
heterospories
heterosporous
heterospory (current term)
heterosquare
heterosquares
heterostasis
heterostatic
heterostracan
heterostructural
heterostructure
heterostructured
heterostructures
heterostyled
heterostylism
heterostylous
heterostyly
heterosubstituted

Literary usage of Heterospory

Below you will find example usage of this term as found in modern and/or classical literature:

1. Principles of Botany by Joseph Young Bergen, Bradley Moore Davis (1906)
"heterospory arose in the pteridophytes with the establishment of two sizes of spores, ... heterospory and the independence of the sporophyte are the chief ..."

2. Principles of Botany by Joseph Young Bergen, Bradley Moore Davis (1906)
"heterospory arose in the pteridophytes with the establishment of two sizes of spores, ... heterospory and the independence of the sporophyte are the chief ..."

3. The Origin of a Land Flora: A Theory Based Upon the Facts of Alternation by Frederick Orpen Bower (1908)
"heterospory AND THE SEED-HABIT. THE theme of this book has been the origin ... The earlier step was the introduction of heterospory, which results only in ..."

4. Elementary Botany by George Francis Atkinson (1898)
"This production of two kinds of spores by isoetes, selaginella, and some of the other fern plants is heterospory, or such plants are said to be ..."

5. The Evolution of Sex in Plants by John Merle Coulter (1914)
"In fact, heterospory made seed plants possible. That large spores should produce ... The effect of heterospory upon the gametophytes is seen not only in the ..."

6. Science by American Association for the Advancement of Science (1898)
"195. instance, from the standpoint of evolution, the appearance of heterospory among the pteridophytes is one of the most important contributions to plant ..."

7. The New International Encyclopædia edited by Daniel Coit Gilman, Harry Thurston Peck, Frank Moore Colby (1903)
"heterospory is one of the most important phenomena in connection with the evolution of the plant kingdom, since through it the seed has appeared, ..."

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