Statement I: | \(CO_2\) acceptor in \(C_4\) plants is phosphoenolpyruvate and is found in the mesophyll cells. | The primary
Statement II: | \(C_4\) plants lack RuBisCO enzyme. | Mesophyll cells in
The first stable product of CO2 fixation in sorghum is:
1. Succinic acid
2. Phosphoglyceric acid
3. Pyruvic acid
4. Oxaloacetic acid
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 |
In Hatch and Slack pathway, the primary CO2 acceptor is -
1. Oxaloacetic acid
2. Phosphoglyceric acid
3. Phosphoenol pyruvate
4. Rubisco
Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in:
1. C4 plants
2. C2 plants
3. C3 and C4 plants
4. C3 plants
1. | C4 | 2. | CAM |
3. | Nitrogen –fixer | 4. | C3 |
In Kranz anatomy, the bundle sheath cells have:
1. | thick walls, many intercellular spaces and few chloroplasts |
2. | thin walls, many intercellular spaces and no chloroplasts |
3. | thick walls, no intercellular spaces and a large number of chloroplasts |
4. | thin walls, no intercellular spaces and several chloroplasts |
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