Transport System

Transport of substances is necessary to ensure timely availability of substances in various parts of the body of a complex organism. The heart, arteries, veins and blood compose the blood circulation system in human beings. Heart is a pumping organ which pumps the blood to lungs and to various body parts. In plants, xylem and phloem make the vascular system. Humans and birds have four-chambered heart which ensures complete separation of oxygenated and deoxygenated blood in the body. Xylem is responsible for transportation of water and minerals, while phloem is responsible for transport of food in plants. Root pressure, transpiration pull and adhesion and cohesion work together towards ascent of sap in plants. Active transport is involved during transportation through phloem.

Life Process Quiz 3