The process which makes a major difference between C3 and C4 plants is:
| 1. | glycolysis | 2. | Calvin cycle |
| 3. | photorespiration | 4. | respiration |
| 1. | ATP | 2. | NADH |
| 3. | NADPH | 4. | Oxygen |
| 1. | Green sulphur bacteria | 2. | Nostoc |
| 3. | Cycas | 4. | Chara |
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
| 1. | Increasing atmospheric CO2 concentration up to 0.05% can enhance the CO2 fixation rate |
| 2. | C3 plants respond to higher temperatures with enhanced photosynthesis while C4 plants have much lower temperature optimum |
| 3. | Tomato is a greenhouse crop that can be grown in CO2 enriched atmosphere for higher yield |
| 4. | Light saturation for CO2 fixation occurs at 10% of full sunlight |
Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in:
1. C4 plants
2. C2 plants
3. C3 and C4 plants
4. C3 plants
Water-soluble pigments found in plant cell vacuoles are:
| 1. | chlorophylls | 2. | carotenoids |
| 3. | anthocyanins | 4. | xanthophylls |
| 1. | C4 | 2. | CAM |
| 3. | Nitrogen –fixer | 4. | C3 |
Emerson’s enhancement effect and red drop have been instrumental in the discovery of?
| 1. | two photosystems operating simultaneously |
| 2. | photophosphorylation and cyclic electron transport |
| 3. | oxidative photophosphorylation |
| 4. | photophosphorylation and non-cyclic electron transport |
| 1. | lumen of thylakoids | 2. | intermembrane space |
| 3. | antennae complex | 4. | stroma |
In photosynthesis, the light-independent reactions take place at?
1. Thylakoid lumen
2. photosystem I
3. photosystem II
4. Stromal matrix