@futurebird@craftycat Sixty years on I still remember a young biology teacher explaining the sexual and asexual stages in the reproduction of ferns, with the spores producing a thallus (He made the point of emphasising that it was a "th" to a classroom of stupid giggling adolescent boys) and the then sexual stage from the thallus with motile gametes to the development of a fern. I find it fascinating to this day.
futurebird