I am inspired by this video. It gives an example of the Venus flytrap catch its food by tracking and counting the number of times an insect touches the plant’s trigger hairs in the mouth. When an insect leads on the trap, consider, as one stimulation, the plant doesn’t lead to any reactions. But in the next 20 seconds, if the insect moves again, the Venus flytrap will immediately shut off and catch the insect. Once the third movement is made, the plant will start to secrete acidic liquid to digest this insect. Meanwhile, the more the insect moves, the more acid it will release. It is important to record the number of times because the plant does not want to waste time and acids for falling leaves or rain drops.
There are more examples like sunflower senses toward the sun; the shame-plant folds leaflets inward when it is disrupted. Plants have sensory, memory, and they communicate as human does.
Not just the leaf, the root has its own intelligence as well. Plants’ roots sense gravity, the presence of water, feel the obstructions in the way of roots. A Ted Talks for “The Roots of Plant Intelligence” reports, plants are good at movements and communication, such as pollen transportation. The root apex grows against a slope and networks with others. More details in this video link: https://www.ted.com/talks/stefano_mancuso_the_roots_of_plant_intelligence?language=en
I think it is really cool like when we think plants are just plants, but they have a lot of “knowledge” for their living and survival skills. It’s important to learn and study them because we, human, are learning from them even now.