Importance of plants

Plants are important for human life in many ways. Without plants animal life on the planet earth would be almost impossible.
Importance of plants as a food source
Plants make up the largest proportion in our diet. Plants are much more important than the larger trees for this purpose since in many countries the staple diet comes from rice or wheat.
Importance of plants to maintain the balance in the echo-system
Plants are really necessary to maintain the balance in the echo-system. For an instance plants are necessary to cycle C on the planet. CO2 in the air taken in to the plants and stored in the carbohydrates. In the present time human activities have reduced the amount of plants on the planet. So all the cycles are now changing. Because of this now the humans feel the importance of plants more and more.