The first step in photosynthesis is the

Options

A. excitation of electron of chlorophyll by a photon of light
B. formation of ATP
C. attachment of `CO_(2)` to carbon sugar
D. ionisation of water

Answer

A

Explanation

The entire process of photosynthesis is driven by light energy coming from the sun. this energy is first captured by chlorophyll molecules and later on utilised for the synthesis of ATP (chemical energy) molecules which are later utilised in the dark reaction, i.e., calvin cycle.