Breaking and reforming the bonds among them releases energy. The correct option is B Glucose. Photosynthesis What Is The Main Purpose Of Photosynthesis Ppt Download Oxygen is an output of photosynthesis. . Green plants respire only at night. What are the products of photosynthesis. Biology questions and answers. All are products of photosynthesis Which by-product of photosynthesis was important in altering the atmosphere of the earth so that aerobic organisms could evolve. The photosynthesis process is the process by which photoautotrophs convert light energy into chemical energy which can later be used to fuel the activities of organisms. They take place in different compartments of the same organelle. Oxygen and water d. B The volume of carbon dioxide changes due to photosynthesis. Which of the following is NOT a product of photosynthesis. D Carbon dioxide breaks down into glucose that t...