Back Megaspora BS Megàspora Catalan Macróspora Spanish بزرگ‌هاگ Persian Macrospore French Macróspora Galician मेगास्पोर Hindi Makrosporo IO Macrospora Italian მეგასპორა Georgian

Megaspore

Microscopic photo of spores (in red) of Selaginella. The large three spores at the top are megaspores whereas the numerous smaller red spores at the bottom are microspores.

Megaspores, also called macrospores, are a type of spore that is present in heterosporous plants. These plants have two spore types, megaspores and microspores. Generally speaking, the megaspore, or large spore, germinates into a female gametophyte, which produces egg cells. These are fertilized by sperm produced by the male gametophyte developing from the microspore. Heterosporous plants include seed plants (gymnosperms and flowering plants), water ferns (Salviniales), spikemosses (Selaginellaceae) and quillworts (Isoetaceae).

Developed by StudentB