I: | Only green plants can prepare their own food. |
II: | In green plants, all cells, tissues and organs photosynthesise. |
1. | Only I |
2. | Only II |
3. | Both I and II |
4. | Neither I nor II |
I: | CO2 was required for photosynthesis |
II: | Light is not essential for carbon fixation in photosynthesis. |
1. | Only I is correct |
2. | Only II is correct |
3. | Both I and II are correct |
4. | Both I and II are incorrect |
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. |
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 |
1. | Preistley | 2. | C. B. van Neil |
3. | T. W. Engelmann | 4. | Arnon and his co-workers |
I: | described first absorption spectrum of photosynthesis. |
ii: | first showed that it is only the green part of the plants that could release oxygen. |
1. | Only I is correct |
2. | Only II is correct |
3. | Both I and II are correct |
4. | Both I and II are incorrect |
I: | Heterotrophs are organisms that obtain nutrients by consuming the carbon of other organisms |
II: | Autotrophs are organisms that produce their own nutrients from the carbon of inorganic substances like carbon dioxide. |
1. | Only I is correct |
2. | Only II is correct |
3. | Both I and II are correct |
4. | Both I and II are incorrect |