Longest sperm, plants
- Who
- Cycad: Zamia roezlii
- What
- 0.4 millimetre(s)
- When
- 01 January 0001
The longest plant sperm is produced by the plant, Zamia roezlii, a species of cycad native to the rainforests of Colombia. Each sperm produced by this species measures approximately 0.4 mm long and is therefore visible to the naked eye.
This sperm is uncoiled.