Photosynthesis Question 42
42. The first step of photosynthesis is
[2000]
(a) excitation of electron of chlorophyll by a photon of light
(b) formation of ATP
(c) attachment of $CO_2$ to 5 carbon sugar
(d) ionisation of water
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Answer : a
Hints & Solution
(a) 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 later utilised in the dark reaction i.e., calvin cycle.
