As nouns the difference between megaspore and embryosac
is that megaspore is the larger spore of a heterosporous plant, typically producing a female gametophyte while embryosac is alternative form of embryo sac.
megaspore
English
Noun
(
en noun)
(botany) The larger spore of a heterosporous plant, typically producing a female gametophyte
Synonyms
* macrospore
Coordinate terms
* microspore
Derived terms
* megasporic
Related terms
* megasporocyte