Plants are smarter than we think. They can make 'intelligent' decisions. The simple pea plant can decide how best to survive, but it does not have a brain. Researchers grew several pea plants that had roots in two different pots, each containing different amounts of nutrients. One pot always had the same amount, while the other had different amounts. The plants were very consistent. Their roots almost always went to the pot with the most nutrients.
The research paper will be published soon. A researcher said it, "raises a question, not about plants, but about animals and humans". He thought the pea plant might be more efficient when making decisions than humans. He said: "We have a very fancy brain, but maybe most of the time we're not using it." It would be interesting to see how our lives would be different if we made decisions like the pea plant.