It is not easy to be a plant. Try to imagine how difficult it is to survive in an adverse environment without being able to move. Imagine you are a plant surrounded by insects, herbivores, predators of all sorts. Moreover, you cannot escape. The only way to survive is to be indestructible, to be entirely different from an animal. In other words, to be a plant.
To escape the problems of predation, plants have evolved by following a unique and unusual path. They have developed solutions so different from those produced by animals as to become, in our eyes, an example of diversity. They are organisms so different from us animals that they could even be aliens. Many of the solutions developed by plants are the exact opposite of those produced by the animal world.
What is white in animals, is black in plants and vice versa: animals move, plants are still; animals are fast, plants slow; animals consume, plants produce; animals produce CO2, plants fix it, continuing up to the final difference. The most important in my opinion and the least known is the one between dissemination and concentration. For example, any function that is entrusted to specialized organs in animals is diffused all over the body in plants. It is a fundamental difference whose consequences are difficult to fully understand. Such a different structure is one of the reasons why plants seem so different. The fact that we have a certain number of fundamental organs in common with almost all animals, makes them closer and more understandable. Why have vegetables not developed the individual specialized organs that have proved to be so useful in the animal world? The answer is banal. Even if organs are efficient in performing their functions, they are a weak point.