🌱 FROM SPORES TO SEEDS: A REVOLUTION
PAGE 1 OF 5, THE AGE OF SPORES
100 MILLION YEARS TRAPPED
FOR 100 MILLION YEARS, EVERY PLANT WAS A PRISONER OF WATER
For over 100 million years, every plant on land reproduced the same way, releasing clouds of microscopic spores into the wind and hoping for the best. Mosses, liverworts, and ferns blanketed the earth in green, but they were prisoners of water. To fertilise, a sperm cell had to swim through liquid water to reach an egg. No water nearby? No reproduction. This one limitation kept plants tied to swamps, riverbanks, and wet forests, unable to conquer the vast dry interior of continents. Then everything changed.
SPORES!
THE COMPARISON
🌿 Spore: single cell, no food, no embryo, no protection
🌱 Seed: embryo + food store + tough protective coat
🌱 Seed: embryo + food store + tough protective coat
THE WATER TRAP
💧 Fern sperm must swim through water to fertilise
🏜️ Dry land = no reproduction for spore plants
🏜️ Dry land = no reproduction for spore plants