Question

Photosynthesis can take place in the absence of

• A. Light.
• B. Glucose.
• C. Chlorophyll.
• D. Water.
• E. Carbon dioxide.

Answer 1

Answer: (B)

Glucose.

Photosynthesis is the fixation of atmospheric carbon dioxide into organic compounds; it uses water as electron donor and results in the production of oxygen. The first phase of photosynthesis (light reaction) includes trapping of sunlight by chlorophyll and other pigments to drive splitting of water. Hence, photosynthesis needs water, carbon dioxide, light and chlorophyll. Glucose is the product of light independent reactions.