Dictionary » M » Macrospore



noun, plural: megaspores’’

(botany) The larger meiospore produced in heterosporous plants, and develops into a female gametophyte.


Synonym: megaspore

Compare: microspore

See also: spore

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Homosporous and Heterosporous plants.....help! + generations

Yes, Marsileidae and Salvinidae are water ferns that has spores differentiated into micro- and macrospore. They have also very interesting sporangia-bearing creations (sporocarpia). Try to find some more sophisticated info about them, because they are really worth it.

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by SU_reptile
Thu Nov 02, 2006 1:44 pm
Forum: Botany Discussion
Topic: Homosporous and Heterosporous plants.....help! + generations
Replies: 5
Views: 18099

seedling fruits

... because of some mutations occur in the ovulum chamber (at least that's what I learned from my college, :lol: ). In normal pathway, 1 macrospore will do a meiosis and resulting 4 haploid cells which followed by degeneration of 3 cells and the remaining is just only 1 cell. Then this ...

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by victor
Fri Jun 02, 2006 3:42 am
Forum: Botany Discussion
Topic: seedling fruits
Replies: 17
Views: 9972

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