Five fascinating insights into the inner lives of plants

Approximately 4.5 billion years ago, Earth’s land surface was barren and devoid of life. It would take another 2 billion years for the first single-celled organisms to appear in the ocean, including the first algae Grypania spiralis, which was about the size of a 50 pence piece.

Plants composed of many cells have only been around for a mere 800 million years. To survive on land, plants had to protect themselves from UV radiation and develop spores and later seeds which allowed them to disperse more…

© La Conversation - mercredi 12 janvier 2022