noun
- large spores produced by certain plants that develop into female gametophytes
Usage: botanical term
Examples
- The fern produces both megaspores and microspores during reproduction.
- Megaspores are typically larger than microspores in heterosporous plants.
- Scientists studied the megaspores under a microscope to understand plant development.
- Seed plants evolved from ancestors that produced megaspores.
- The megaspores contain nutrients needed for early embryo development.
- Botanists can identify plant species by examining their megaspores.