EVERYDAY SCIENCE

Detailed explanation-1: -An autotroph is an organism able to make its own food. Photoautotrophs are organisms that carry out photosynthesis. Using energy from sunlight, carbon dioxide and water are converted into organic materials to be used in cellular functions such as biosynthesis and respiration.

Detailed explanation-2: -Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.

Detailed explanation-3: -Hint: Photoautotrophs are organisms, such as plants that can synthesize their own food from inorganic material in the presence of light whereas photoheterotrophs are those organisms that use light as a source of energy.

Detailed explanation-4: -Photosynthetic organisms, including plants, algae, and some bacteria, play a key ecological role. They introduce chemical energy and fixed carbon into ecosystems by using light to synthesize sugars.