As nouns the difference between microspore and microgametophyte
is that microspore is smaller of the two spores produced by plants, compare megaspore while microgametophyte is any gametophyte that develops from a microspore.
microspore
English
Noun
(
en noun)
(botany) Smaller of the two spores produced by plants, compare megaspore.
References
* OED2
Anagrams
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microgametophyte
English
Noun
(
en noun)
(biology) Any gametophyte that develops from a microspore
(biology) A male gametophyte