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Definition of Megaspore
1. Noun. Larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte.
Definition of Megaspore
1. Noun. The larger spore of a heterosporous plant, typically producing a female gametophyte ¹
¹ Source: wiktionary.com
Definition of Megaspore
1. [n -S]
Medical Definition of Megaspore
1. Haploid spore produced by a plant sporophyte, that develops into a female gametophyte. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Megaspore
Literary usage of Megaspore
Below you will find example usage of this term as found in modern and/or classical literature:
1. Plant Anatomy from the Standpoint of the Development and Functions of the by William Chase Stevens (1910)
"The megaspore now germinates, its nucleus dividing as shown in Fig. 131, I; the
daughter nuclei move to opposite poles and divide, and the youngest nuclei ..."
2. Organography of Plants, Especially of the Archegoniata and Spermaphyta by Karl Goebel, Isaac Bayley Balfour (1905)
"The arrangements which make possible the nutrition of the megaspore and the endosperm
... The most simple case is that where the megaspore increases, and, ..."
3. An Introduction to Vegetable Physiology by Joseph Reynolds Green (1907)
"The megaspore, like the microspore, is liberated from the sporangium and on
germination it produces a ..."
4. Bulletin: Mining and Metallurgical Investigations by Carnegie Institute of Technology, Mining Advisory Board (1922)
"Redstone megaspore.—(Plates II C and D) Diameter, somewhat greater than ...
The Redstone megaspore type is also, but rarely, found in the Sewickley bed. ..."
5. The Elementary Principles of General Biology by James Francis Abbott (1914)
"The Germination of the megaspore. — The first step in the development of the
megaspore consists in the division of its single nucleus into two, ..."
6. Science by American Association for the Advancement of Science (1898)
"Still further, the advantage to a single megaspore in being retained, thus securing
... With the retention of the megaspore pollination became necessary, ..."
7. Encyclopaedia Britannica, a Dictionary of Arts, Sciences, Literature and edited by Hugh Chisholm (1910)
"17, A, PC), The pollen-tube, containing two generative and one vegetative nucleus,
pierces the wall of the megaspore and then becomes swollen (fig. ..."
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