Consider the given two statements:
I: | The oxygenation reaction of RuBisCO is a wasteful process. |
II: | 3-phosphoglycerate is not created. |
1. | Both I and II are correct and II explains I |
2. | I is correct but II is incorrect |
3. | Both I and II are correct but II does not explain I |
4. | I is incorrect but II is correct |
Identify the incorrect match:
C3 plants | C4 plants | ||
1. | Primary carbon dioxide acceptor | RuBP | PEP |
2. | Primary carbon dioxide fixation product | PGA | OAA |
3. | Presence of PEPcase | Yes | Yes |
4. | Cell type in which initial carboxylation reaction occurs | Mesophyll | Bundle sheath |
Consider the following two statements:
I. Plants with C3 pathway have a single type of photosynthetic cell: the mesophyll cell.
II. Their bundle sheath cells do not contain chloroplasts.
1. Both I and II are correct
2. Only I is correct
3. Only II is correct
4. Both I and II are incorrect
In a photosystem:
1. | The reaction centre is where light is captured, while the antenna complex is where this light energy is transformed into chemical energy. |
2. | The antenna complex is where light is captured, while the reaction centre is where this light energy is transformed into chemical energy. |
3. | The antenna complex is where light energy is captured and transformed into chemical energy. |
4. | The reaction centre is where light energy is captured and transformed into chemical energy. |
COLUMN I |
COLUMN II | ||
A | Primary acceptor of carbon dioxide | P | RuBP |
B | Cells in which Calvin cycle takes place | Q | PEP |
C | Primary carbon dioxide fixation product | R | Bundle sheath |
D | Example | S | Mesophyll |
T | PGA | ||
U | OAA | ||
V | Sorghum | ||
W | Wheat |
A | B | C | D | |
1. | Q | S | U | V |
2. | P | S | T | W |
3. | Q | R | U | V |
4. | P | R | T | W |
Assertion (A): | Cyclic photophosphorylation results in the synthesis of ATP but not of NADPH + H+. |
Reason (R): | The excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the electron transport chain. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | The reaction centres in both photosystems in plants is the same. |
Reason (R): | The reaction centres of both photosystems are formed by chlorophyll b molecules. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
I: | The water-splitting complex is located on the inner side of the thylakoid membrane |
II: | The NADP reductase enzyme is located on the stromal side of the thylakoid membrane |
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. | Chlorophyll a is the chief pigment associated with photosynthesis. |
2. | In the chromatogram, carotenoids appear yellow to yellow-orange. |
3. | Accessory pigments protect chlorophyll a from photo-oxidation. |
4. | The maximum absorption of chlorophyll a is in blue and green wavelength region of light. |
I: | Current availability of carbon dioxide levels is limiting to the C4 plants. |
II: | C3 plants have a much lower temperature optimum than C4 plants. |
1. | Only I is correct | 2. | Only II is correct |
3. | Both I and II are correct | 4. | Both I and II are incorrect |