Question

Photo-oxidation of chlorophyll is called as

• A. Intensification
• B. Chlorosis
• C. Solarization
• D. Defoliation

Answer 1

Answer: (C)

Solarization

Chlorophyll pigments trap sunlight during photosynthesis but are destroyed at high light intensity. Holman (1930) stated that the term solarization, as used in reference to plants, refers to a decrease or complete disappearance of starch following long exposure of leaves to the light of an intensity, that initially was favorable for abundant starch formation. At higher intensities, however, pigments get bleached and the process suffers. The inhibition of photosynthesis by photo-oxidation at higher intensities is called solarization.

So, the correct answer is option C.