Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A sperm-producing organ occurring in seedless plants, fungi, and algae.
from The Century Dictionary.
- noun In botany, the organ in cryptogamic plants which answers to the anther in the phanerogamic series. It assumes various forms and positions in the different groups. Also called
antherid .
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) The male reproductive apparatus in the lower plants, consisting of a cell or other cavity in which spermatozoids are produced; -- called also
spermary .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany An
organ producing malegametes calledantherozoids , found in lower plants.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the male sex organ of spore-producing plants; produces antherozoids; equivalent to the anther in flowers
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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In Bryophytes, the antheridium is the male sex organ, which produces sperm.
unknown title 2009
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In Bryophytes, the antheridium is the male sex organ, which produces sperm.
unknown title 2009
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In Bryophytes, the antheridium is the male sex organ, which produces sperm.
unknown title 2009
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It is called an "antheridium," and within are produced, by internal division, numerous excessively small spermatozoids.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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In both cases the prothallium is small, and often scarcely protrudes beyond the spore, and may be reduced to a single archegonium or antheridium (Fig. 71, _B_, _C_) with only one or two cells representing the vegetative cells of the prothallium (_v_).
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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If a ripe antheridium is crushed in a drop of water, after lying a few minutes the spermatozoids will escape through small openings in the side of the cells.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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The male plant has no definite stem, and consists of a single concave leaf protecting the antheridium.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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The antheridium undergoes no further change, but the archicarp soon divides into two cells, -- a small basal one and a larger upper cell.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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C. Longitudinal section of antheridium; st, stalk; w, wall.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Various
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_J_, a male prothallium, × 50. _an. _ an antheridium.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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