noun
- the larger of two types of spores produced by certain plants, which develops into a female gametophyte
Usage: botany
Examples
- The megaspore develops into the female gametophyte in seed plants.
- Ferns produce both megaspores and microspores during reproduction.
- Each megaspore contains the genetic material needed to form egg cells.
- The botanist examined the megaspores under a microscope.
- Megaspores are typically larger than microspores in heterosporous plants.
- The development of megaspores is crucial for plant sexual reproduction.