When light energy is absorbed by chlorophyll, an electron is promoted to a higher orbital and then transferred to a suitable acceptor, resulting in light energy conversion to chemical energy. Which of the following terms describes this type of reaction?
a. isomerase reaction. b. mutase reaction. c. ligase reaction. d. oxidation-reduction reaction. e. none of the above.

Explanation:

1. Oxidation-reduction reaction: An oxidation-reduction reaction (also known simply as redox reaction) is one of the type of chemical reaction, it involves a transfer of electrons between two species.

2. In plants light is absorbed by chlorophyll which causes transfer of electron from water, and the final acceptor of electron is oxygen.  

3.Plants takes carbohydrates from environment and water from earth, and with the help of sun-light they make carbohydrates and oxygen, so they are called autotrophs.

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