Photosynthesis involves
A) the release of carbon dioxide in a process using sunlight.
B) the union of carbon dioxide and water under the influence of sunlight, and the release of oxygen.
C) a process known as respiration.
D) important reactions within the stems and roots of plants.

Question

Quizplus · Accepted Answer

Photosynthesis is the process by which plants, algae, and some bacteria convert carbon dioxide and water into organic compounds, such as sugars and oxygen. This process occurs in the chloroplasts of the plant cells and requires the energy from sunlight to drive the chemical reactions. The process involves two major stages - light-dependent reactions and light-independent reactions. In the light-dependent reactions, light energy is absorbed by pigments in the chloroplasts, and water molecules are split into oxygen and hydrogen ions. In the light-independent reactions (also called the Calvin cycle), carbon dioxide is fixed into organic compounds, such as glucose, using the energy from ATP and NADPH generated in the light-dependent reactions. The net result of photosynthesis is the production of organic compounds and the release of oxygen into the environment.

Photosynthesis Involves