For the synthesis of one glucose molecule, the Calvin cycle operates for:
1. 2 times | 2. 4 times |
3. 6 times | 4. 8 times |
Cyclic photophosphorylation results in the formation of
1. | NADPH | 2. | ATP and NADPH |
3. | ATP, NADPH and O2 | 4. | ATP |
Study the pathway given below-
In which of the following options, correct words for all the three blanks A, B and C are indicated?
A | B | C | |
1. | Fixation | Transamination | Regeneration |
2. | Fixation | Decarboxylation | Regeneration |
3. | Carboxylation | Decarboxylation | Reduction |
4. | Decarboxylation | Reduction | Regeneration |
In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of :
1. | mesophyll | 2. | bundle sheath |
3. | phloem | 4. | epidermis |
A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. In which of the following physiological groups would you assign this plant?
1. C4 | 2. CAM |
3. Nitrogen–fixer | 4. C3 |
Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in:
1. C4 plants | 2. C2 plants |
3. C3 and C4 plants | 4. C3 plants |
The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of:
1. 1 molecule of the 3-C compound
2. 1 molecule of the 6-C compound
3. 1 molecule of a 4-C compound and 1 molecule of the 2-C compound
4. 2 molecules of the 3-C compound
In photosynthesis, energy from light reaction to dark reaction is transferred in the form of
1. | ADP | 2. | ATP |
3. | RUDP | 4. | Chlorophyll |
The first stable product of CO2 fixation in sorghum is:
1. | Succinic acid | 2. | Phosphoglyceric acid |
3. | Pyruvic acid | 4. | Oxaloacetic acid |
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Which of the following statements is incorrect?
1. RuBisCO is a bifunctional enzyme
2. In C4 plants, the site of RuBisCO activity is mesophyll cell
3. The substrate molecule for RuBisCO activity is a 5-carbon compound
4. RuBisCO action requires ATP and NADPH