Similar to how autotrophs store energy as starch, humans store excess energy derived from food in the form of glycogen. Both starch and glycogen serve as internal energy reserves that can be accessed when the organism requires additional energy.

The ability to regulate stomatal opening and closing allows plants to optimize gas exchange while minimizing water loss, thereby helping them adapt to varying environmental conditions such as temperature, humidity, and water availability.

Starch serves as an internal energy reserve in autotrophic organisms. Carbohydrates that are not immediately used are stored in the form of starch, which can be mobilized and utilized as needed by the organism.

Autotrophs utilize carbohydrates as a source of energy for various metabolic processes within the organism, supporting growth, maintenance, and reproduction.

Photosynthesis is the process by which autotrophs convert carbon dioxide and water into carbohydrates using sunlight and chlorophyll. This process provides the organism with stored forms of energy, primarily in the form of carbohydrates.