The sperm of ferns detect unfertilized archegonia via a malate signal.
"In higher plants, we find positive chemotaxis in fern sperms, which respond to a malate signal from unfertilized archegonia." (Bar-Cohen 2006:474)
Learn more about this functional adaptation.
- Yoseph Bar-Cohen. 2006. Biomimetics: biologically inspired technologies. Boca Raton, FL: CRC/Taylor & Francis. 527 p.
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