microspore definition by Webster's New World
a haploid spore, usually smaller than a megaspore of the same plant, which gives rise to a male gametophyte: found in all seed plants, where it is an immature pollen grain, and in many lower vascular plants
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- microsporic adjective
microspore definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The smaller of two types of spores that give rise to a male gametophyte.
- miˌcro·spoˈric, miˌcro·spoˈrous adjective
microspore - Science Definition
One of the two types of haploid spores produced by a heterosporous plant. Microspores develop into male gametophytes and are usually smaller than megaspores. In angiosperms, the microspore develops into the pollen grain.