Plants take in nutrients and water through their roots and then transport these materials to the rest of the plant. Photosynthesis, which produces glucose, occurs in the leaves of a plant.
The glucose is then transported from the leaves to the rest of the plant. Which system transports nutrients in a similar way throughout the human body?
I think the "plants take in nutrients and water through their roots and then transport these materials to the rest of the plant" one is the most similar to the human body. This process would be the veins getting blood.