- 1(current)
Q. No.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
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 |
| 1. | Only I | 2. | Only I and III |
| 3. | Only II and III | 4. | Only IV |
Consider the two statements:
I. A poison that inhibits an enzyme of the Calvin cycle will also inhibit light reactions.
II. The light reactions require ADP and NADP+ which would not be produced in sufficient quantities if the Calvin cycle stopped.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
Consider the two statements:
I. The C4 photosynthesis pathway uses more energy than the C3 photosynthesis pathway.
II. C4 plants are able to more efficiently fix carbon in drought, high temperatures, and in limitations of nitrogen or CO2.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. Only I is correct
4. Both I and II are incorrect
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- 1(current)
Q. No.
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