Plants are an essential part of life on Earth: even if an animal doesn’t eat plants directly, it certainly relies on them in some other way. For example, a wolf might not eat grass, but it hunts animals that do, takes shelter in the trees of the forest, and breathes the oxygen that plants have released. How did plants become such a staple of our existence? The same reason why every living thing is the way it is: they have evolved that way.
|Charles Darwin, famous for the theory of evolution. |
Via Simple Capacity.
You’ve probably heard of Charles Darwin, a famous scientist. Darwin’s Theory of Natural Selection is what most scientists study to answer questions about how plants and animals have changed over time--and how we can answer your question about the very first plants. In nature, certain traits make some organisms more successful than others, allowing them be “selected” to pass on those successful traits to their offspring. For instance, a tree might mutate to grow fruits that look different from those of all of its fellow trees. Birds might find this new fruit particularly tasty-looking, so they will eat lots of them and spread that mutant tree’s seeds. Since that mutant tree had lots of offspring, it’s now more likely that its mutation will be passed on and become a common trait of the species. These changes happen gradually over many generations, but they contribute to the evolution of that species.
Plants descended from germs?!?