Microspores vs Megaspores
(Similarities and Differences between Microspores and Megaspores)
Microspores and megaspores are sexual spores produced by vascular plants (some Pteridophytes and all Gymnosperms and Angiosperms) for sexual reproduction. Both microspores and megaspores on germination produce the respective gametophytic generations. The gametophytes on maturation produce sex organs and gametes to establish the fertilization and thus to complete the life cycle.
The production of different types of spores with different functions and sexuality is called Heterospory. The heterosporous condition was first evolved in Pteridophytes and it is considered as the prerequisite for seed habitat.
Learn more: Heterospory and Seed Habitat
The present post discusses the similarities and differences between microspores and megaspores with a comparison table.
Similarities between Microspores and Megaspores
Ø Both microspores and megaspores are sexual spores.
Ø Both are produced by the diploid sporophytic plants.
Ø Both are haploid spores produced after reduction division of spore mother cells.
Ø Both spores are produced in specialized structures called sporangium.