Plants can be closely related based on shared similarities and common ancestors, as seen in examples like orchids and maize.
Species closely related are those that share many similarities due to a recent common ancestor. For example, considering plants like orchids and sundew, the level of similarity reflects the closeness or distance of their common ancestors. In the case of maize, it was developed from the wild plant teosinte through selective breeding over thousands of years, showing how plants can evolve and change.
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