Question
From which of the following, photosynthetic autotrophs receive their energy?
Heat
Inorganic chemicals
Organic chemicals
Light
Solution
D.
Light
Photosynthesis is the synthesis of organic compounds (primarily sugars) from carbon dioxide (CO2) and water using light energy. The green cells of the plant convert the solar energy into chemical energy through this process. It's importance lies in the transformation of low energy compounds ie, CO2 and H2O into high energy compounds such as carbohydrates.
