If you enjoyed Peter Wohlebben’s The Hidden Life of Trees, as I did, then you will find much to appreciate in What A Plant Knows, by Daniel Chamovitz. Chamovitz, Director of the Manna Center for Plant Biosciences at Tel Aviv University, presents an explanation of
the scientific evidence regarding plants’ abilities to see, smell, feel, hear, remember, and understand where they are.
Plants do not experience these senses as we do. They don’t have eyes or brains; so they cannot see by creating mental pictures the way animals can. However, plants do have photoreceptors very much like the ones people have in the back of their retinas. In plants, these photoreceptors can be found in growing tips and in leaves.
Plants do not grow toward the light because of photosynthesis, they do so because the photoreceptors in the growing tip sense the light. If you cut off the tip, the plant will no longer move toward sunshine. Plants detect different kinds of light and respond to them in different ways. They can also measure the amount of light they are exposed to.