1. | Joseph Priestley | 2. | Jan Ingenhousz |
3. | Julius von Sachs | 4. | C. B. Van Neil |
1. | Joseph Priestley | 2. | Jan Ingenhousz |
3. | Julius von Sachs | 4. | C. B. Van Neil |
I: | production of glucose when plants grow |
II: | location of green substance in plants in special bodies |
A: | Glucose produced during photosynthesis is usually stored as cellulose in plants. |
B: | The ‘green substance’ refers to chlorophyll. |
C: | ‘Special bodies’ refer to chloroplasts in the plant cells. |
1. | Only A and B | 2. | Only B and C |
3. | Only A | 4. | A, B and C |
C. B. van Niel proved that:
1. | Plants produce glucose when they grow. |
2. | Blue and red light are effective for photosynthesis. |
3. | It is only the green parts of the plants that could release oxygen. |
4. | Hydrogen from a suitable oxidizable compound reduces carbon dioxide to carbohydrates. |
I: | Plants restore to the air whatever breathing animals and burning candles remove. |
II: | Sunlight is essential to the plant process that somehow purifies the air fouled by burning candles or breathing animals. |
1. Only I | 2. Only II |
3. Both I and II | 4. Neither I nor II |
What conclusions can be drawn from the Moll’s half leaf experiment [the given diagram shows the schematic representation of the experiment]?
What can be said after observing the results of the experiment?
I: | Negative starch test by the leaf portion present inside the bottle indicates CO 2 is necessary for this process. |
II: | Negative test of starch, which is also shown by the portion of the leaf present in between the split of the split cork is due to the lack of CO 2 and light, thus indicating that both of them are essential requirements. |
1. | Only I | 2. | Only II |
3. | Both I and II | 4. | None |
1. | 6CO2 + 12H2O + light energy → C6H12O6 + 6O2+ 6H2O |
2. | 6CO2 + 6H2O + light energy → C6H12O6 + 6O2 |
3. | CO2 + H2O + light energy → [CH2O] + O2 |
4. | C6H12O6 + 6O2 → 6CO2 + 6H2O |
A: | Photosynthesis includes both light-dependent and light- independent reactions. |
B: | Enzymes must carry out the light-independent reactions. |
1. | Only A | 2. | Only B |
3. | Both A and B | 4. | Neither A nor B |