AP BIOLOGY

Detailed explanation-1: -Photosynthesis is the process of synthesis of food by plants using carbon dioxide and water in presence of sunlight and chlorophyll. Oxygen (O2) is released during the process as a waste product. Hence, oxygen is not essential for the process of photosynthesis.

Detailed explanation-2: -Oxygen and water are the raw materials for photosynthesis.

Detailed explanation-3: -The conversion of sunlight into usable chemical substances is attained by chlorophyll. The raw materials needed for the process of photosynthesis are CO2 and H2O. 6 molecules of water and 6 molecules of carbon dioxide with the help of sunlight produce glucose and 6 molecules of oxygen.

Detailed explanation-4: -As observed, for the survival of life, the process of photosynthesis is crucial and raw materials such as water, carbon dioxide and sunlight are important for the completion of the process of photosynthesis.

Detailed explanation-5: -Detailed Solution The correct answer is gypsum.