macrospore

/mak-ruh-spawr, -spohr/US // ˈmæk rəˌspɔr, -ˌspoʊr //UK // (ˈmækrəʊˌspɔː) //

大孢子,巨孢子,宏孢子

Definitions

n.名词 noun

But the formation of the macrospore or embryo-sac is simpler than the corresponding process in cryptogams.
The larger ones contain each a large spore, or macrospore; the smaller contain numerous microspores, immersed in mucilage.
The macrospore divides into two cells, a large lower one, and a smaller upper one.
The nucellus is a cellular tissue enveloping one large cell, the embryo-sac or macrospore.