Plants play a very important role in human life, we cannot imagine our life without plants. 90% of the products we consume are obtained from plants, besides, they enrich the atmospheric air with oxygen. It is also a nutritious food for livestock. The ears of grain-bearing plants are food for caterpillars. Understanding the role of plants in our lives, each of us sho Plants, air, animal husbandry, farm, vegetables, poly crops.uld contribute to the growth of plants.