Which cell organelle's function resembles the function of the brain in higher animals

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

What kinds of molecules can pass through the cell membrane without any problem?