Final answer:
During photosynthesis, light is necessary for electron transport, excitement of chlorophyll molecules, and photolysis. Therefore, the correct answer to the question is (d) None of the above.
Step-by-step explanation:
During photosynthesis, light is necessary for multiple processes such as electron transport, the excitement of chlorophyll molecules, and photolysis. Specifically:
- (a) Electron transport involves the transfer of excited electrons through the electron transport chain (ETC), which is initiated by light.
- (b) The excitement of chlorophyll molecules occurs when photons from light strike photosystem II, leading to the excitation of electrons.
- (c) Photolysis is the process where water molecules are split, using energy from light, to provide the electrons for the photosynthetic electron transport chain.
All these processes are dependent on light, hence in the context of the question, the correct answer is (d) None of the above.