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noun Botany.
1.
the larger of the two kinds of spores characteristically produced by seed plants and a few fern allies, developing into a female gametophyte. Compare microspore.
2.
the embryo sac of a flowering plant.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Megaspore
is always a great word to know.
So is alternation of generations. Does it mean:
| variation in an organism's life cycle of dissimilar reproductive forms |
| plants with true roots, stems and leaves dispersed by spores because they don't produce seeds |
Collins
World English Dictionary
| megaspore (ˈmɛɡəˌspɔː) | |
| —n | |
| 1. | Compare microspore Also called: macrospore the larger of the two types of spore produced by some spore-bearing plants, which develops into the female gametophyte |
| 2. | the cell in flowering plants that gives rise to the embryo sac |
| mega'sporic | |
| —adj | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
megaspore  (měg'ə-spôr) Pronunciation Key
One of the two types of haploid spores produced by a heterosporous plant. Megaspores develop into female gametophytes and are usually larger than microspores. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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