Q. No.The primary acceptor in plants is:
1. RuBP in mesophyll cells
2. RuBP in bundle sheath cells
3. PEP in mesophyll cells
4. PEP in bundle sheath cells
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In pathway, the 4-carbon compound transported to bundle sheath cells most commonly is:
| 1. | Glutamic acid | 2. | Malic acid |
| 3. | Oxaloacetic acid | 4. | Fumaric acid |
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Identify the incorrectly matched pair:
| 1. | PS I | P700 is reaction center |
| 2. | RuBP | 5 carbon compound |
| 3. | PS II | P680 is reaction center |
| 4. | C3 plants | Kranz anatomy |
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The and photosynthesis pathways are so called because the initial carbon fixation product in them are respectively:
| 1. | pyruvate; malate |
| 2. | malate; pyruvate |
| 3. | 3-phosphoglycerate; oxaloacetic acid |
| 4. | glyceraldehyde 3-phosphate; phospho-enol-pyruvate (PEP) |
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A and a plant were fed with carbon dioxide radioactively labeled with an isotope of carbon. In which of the following molecules, respectively in and plants, would radioactivity first appear as photosynthesis progresses?
| 1. PGA and OAA | 2. Water and PGAL |
| 3. PGAL and Malic acid | 4. PEP and RuBP |
The following diagram shows the photosynthetic carbon cycle. A and B can respectively be:
1. Pyruvate; malate or aspartate
2. Phoshoglycerate; fumarate or aspartate
3. Phosphoenol pyruvate; malate or aspartate
4. Phosphoenol pyruvate; fumarate or aspartate
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Identify the incorrect statement regarding the comparison of plants to the plants:
1. They tolerate higher temperatures
2. They show a response to high light intensities
3. They have a lower productivity of biomass
4. They lack photorespiration
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| I: | The C4 acid OAA is formed in the mesophyll cells. |
| II: | Malic acid or aspartic acid are transported to the bundle sheath cells. |
| III: | C4 acids are broken down to release carbon dioxide and a 3 carbon molecule in mesophyll cells. |
| IV: | The 3 carbon molecule is transported back to the bundle sheath cell where it is converted to PEP again. |
2. II, III and IV are incorrect
3. Only I, II and III are correct
4. I, II, III and IV are correct
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The pathway shown in the figure will be seen in:
1. plants
2. CAM plants
3. plants
4. All photosynthetic plants
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