Botany - Photosynthesis in Higher Plants Question with Solution | TestHub
Assertion : Under conditions of high light intensity and limited supply, photorespiration has a useful role in protecting the plants from photo-oxidative damage. Reason : If enough is not available to utilize light energy for carboxylation to proceed, the excess energy may not cause damage to plants.
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Photorespiration protects the plants from photoxidative damage by dissipating excess of excitation energy. When the supply is limited and under high light intensity photorespiration takes place thus protecting the plants. If enough is not available to utilize light energy for carboxylation to proced, the excess energy will cause photoxidative damage to the plants. The energy liberated should be used in photophosphorylation in presence of . If is less then in plants combines with to form phosphoglycollate thus utilizing the excess energy.
