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Agriculture · Q294

Plant Pathology

Graduate and Post Graduate · Agriculture · question 294

Q294

Chemical which absorbs light energy and changes it to chemical energy is

A.
Xanthophyll
B.
Chlorophyll a
Answer
C.
Chlorophyll b
D.
Chlorophyll c

Answer: Option B

Solution

Answer: Option B
Solution:
A chemical which absorbs light energy and changes it to chemical energy is Chlorophyll a.
Chlorophyll a is a specific form of chlorophyll used in oxygenic photosynthesis. It absorbs most energy from wavelengths of violet-blue and orange-red light, and it is a poor absorber of green and near-green portions of the spectrum.
Chlorophyll a also transfers resonance energy in the antenna complex, ending in the reaction center where specific chlorophylls P680 and P700 are located.