Question : The process through which excess of light energy is dissipated in photosynthesis is known as
Option 1: Quenching
Option 2: Scavenging
Option 3: Photolysis
Option 4: Photophosphorylation
Correct Answer: Quenching
Solution : The correct option is Quenching.
In photosynthesis, "quenching" refers to the act of releasing surplus energy, often as heat, in order to preserve the photosynthetic system from harm. This is referred to as "non-photochemical quenching (NPQ)" when excess light energy is dissipated by mechanisms that do not include the conversion of light energy into chemical energy (such as ATP and NADPH) as in the regular photosynthetic process. NPQ protects plants from the damaging effects of excessive light exposure and preserves photosynthetic efficiency.
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