The plantae kingdom has organisms that are multicellular, eukaryotic, and autotrophic. The Five Major Parts of the Brain At its most basic, the brain controls the body. 2  Electrical impulses are sent along the nervous system to and from the brain that regulate all movement. 3  The brain and the nerv…. 4  The Life of Brown Algae in Your Aquarium Your aquarium can host a multitude of enjoyable organisms.