During photorespiration, the decarboxylation reaction occurs in
Important Questions on Photosynthesis in Higher Plants
Which among the following statements are correct?
(i) The quantum yield of photosynthesis decreases with an increase in temperature in plants, as compared to plants.
(ii) The first stable product in pathway is phosphoglycerate, whereas in the pathway it is oxaloacetate.
(iii) pathway is present only in plants and pathway is present in all plants.
(iv) The rate of photorespiration is very high in plants and very low in plants.
(A) Photorespiration is the synthesis of neither sugar nor ATP rather the release of .
(B) CAM metabolism is an alternative to and pathways of fixation in plants in dry and hot climates.
(C) Bundle sheath cells are having many chloroplasts, thick walls with no intercellular space.
(D) After World War II photosynthetic studies were exemplary.
A. Causes the 25% loss of CO2 fixed by Calvin- Benson cycle.
B. Operates in chloroplasts, leaf peroxisomes and mitochondria.
C. Absent in photosynthetic bacteria.
D. Does not produce ATP.
Which light-dependent phenomenon has been described by the above statements?
Reason: The rate of respiration in dark and light is almost the same in all plants.
| Column-I | Column- II |
|---|---|
| (A) Carboxylation | (1) Oxygen evolution |
| (B) Phosphorylation | (2) Photorespiration |
| (C) Photolysis of water | (3) RuBisCO |
| (D) Phosphoglycolate | (4) Chemosynthesis |
| (E) Nitrosomonas | (5) ATP |
Read the following statements on photorespiration and state them as true (T) or false (F).
A. Oxidation of RuBP in the stroma of chloroplast in bright light and high oxygen.
B. Does not utilise ATP and reducing power.
C. Results in the release of CO2 with the utilisation of energy.
D. The biological function of photorespiration is not yet known.
