CBSE Class 10 Answered

Only green plants (and a few other autotrophic organisms) have the capacity to produce their own food from simple inorganic materials like carbon dioxide and water, with the help of sunlight and chlorophyll , through photosynthesis. All the consumers depend on this food produced by green plants. So if there were no green plants, no food will be available for the other living organisms. Plants also carry out another important role of releasing oxygen into the atmosphere through photosynthesis. During respiration, organisms use this oxygen for releasing energy. Without these 2 important aspects of food and oxygen, it would be difficult for life to survive on earth.