Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A multicellular, often flask-shaped, egg-producing organ occurring in mosses, liverworts, ferns, and most gymnosperms.
from The Century Dictionary.
- noun The pistillidium or female organ of the higher cryptogams, having the same function as the pistil in flowering plants.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) The pistillidium or female organ in the higher cryptogamic plants, corresponding to the pistil in flowering plants.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany A
multicellular reproductive structure that contains a large, non-motilegamete (egg cell), and within which anembryo will develop.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a female sex organ occurring in mosses, ferns, and most gymnosperms
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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The archegonium is the female reproductive organ, which produces eggs.
unknown title 2009
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The archegonium is the female reproductive organ, which produces eggs.
unknown title 2009
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The archegonium is the female reproductive organ, which produces eggs.
unknown title 2009
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The female organ in the bryophytes is called an "archegonium," and differs considerably from anything we have yet studied, but recalls somewhat the structure of the oögonium of _Chara_.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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Shortly before the archegonium opens, the canal cells become disorganized in the same way as in the bryophytes, and the protoplasm of the central cell contracts to form the egg cell which shows a large, central nucleus, and in favorable cases, a clear space at the top called the "receptive spot," as it is here that the spermatozoid enters.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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Finally the pollen tube penetrates down to and through the open neck of the archegonium, until it comes in contact with the egg cell.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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-- _A_, young embryo of _Funaria_, still enclosed within the base of the archegonium, × 300.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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The two growing points on the side of the embryo nearest the archegonium neck grow faster than the others, one of these outstripping the other, and soon becoming recognizable as the first leaf of the embryo (Fig. 67, _A_, _L_).
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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In this way it can be easily forced out of the archegonium, and then by thoroughly washing away the potash, neutralizing if necessary with a little acetic acid, very beautiful preparations may be made.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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To study the first division of the embryo, it is usually necessary to render the archegonium transparent, which may be done by using a little caustic potash; or letting it lie for a few hours in dilute glycerine will sometimes suffice.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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