The autotrophs are the organisms which synthesize food material on their own which could be photo-autotrophs or chemo-autotrophs.
Photosynthesis is a process which synthesizes the food molecule using carbon dioxide in the presence of sunlight. The photosynthesis process occurs in photobacteria, green plants and the green algae.
Since photosynthesis is involved in the synthesis of glucose molecule which is an organic compound therefore, option-D is the correct answer.
During photosyntheis, plants make sugar(an organic molecule and a type of carbohydrate). Photosynthesis occurs in autotrophs only, the organisms which are able to make their food like plants. Plants take air and water and produces glucose in presence of sunlight( a photochemical reaction). The product of the reaction is glucose which is one of the four types of organic molecule which is use by plants to make cells and their parts and growth.
Heterotrophs are the organisms which cannot make their own food and rely on other organisms for nutrients. Hence option 1 and 2 cannot be the part of answer. While the plants consume inorganic nutrients(decayed matter) from soil.
Hello! Autotrophs make their own food (plants) and heterotrophs consume other organisms for energy (consumers.) Autotrophs use the process of photosynthesis to produce the oxygen as one of its products. Heterotrophs use the oxygen produced by the autotrophs to perform cellular respiration, which releases carbon dioxide that plants use; it's a balanced cycle. Hope this helps!
