- 1(current)
Q. No.Consider the given two statements:
| I: | Carbon reactions during photosynthesis in higher plants are called as dark reactions. |
| II: | They occur in darkness and they are not light-dependent. |
| 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. | I is incorrect but II is correct |
Subtopic: Dark Reaction: Biosynthetic Phase | Dark Reaction : Calvin Cycle |
79%
Level 2: 60%+
Hints
How many carbon atoms does the primary carbon dioxide acceptor have in C3 photosynthesis?
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 5 |
Subtopic: Dark Reaction : Calvin Cycle |
77%
Level 2: 60%+
Hints
How many ATP and NADPH are respectively required to make one molecule of glucose through the Calvin pathway?
| 1. | 3 and 2 | 2. | 6 and 6 |
| 3. | 9 and 6 | 4. | 18 and 12 |
Subtopic: Dark Reaction : Calvin Cycle |
88%
Level 1: 80%+
Hints
The pathway:
| 1. | is common to all plants |
| 2. | takes place in mesophyll cells in C4 plants |
| 3. | takes place in bundle sheath cells in C3 plants |
| 4. | does not take place in CAM plants |
Subtopic: Dark Reaction : Calvin Cycle |
86%
Level 1: 80%+
Hints
The reactions of the Calvin cycle can take place as long as which of the following products of the light dependent reactions are available?
| 1. | Water and Glucose |
| 2. | Water and ATP |
| 3. | Oxygen and Carbon dioxide |
| 4. | ATP and NADPH |
Subtopic: Dark Reaction: Biosynthetic Phase | Dark Reaction : Calvin Cycle |
88%
Level 1: 80%+
Hints
The number of turns of Calvin cycle required to produce one molecule of Glyceraldehyde 3 Phosphate is:
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 6 |
Subtopic: Dark Reaction : Calvin Cycle |
Level 3: 35%-60%
Hints
The primary function of the Calvin cycle is to:
| 1. | use ATP to release carbon dioxide |
| 2. | use NADPH to release carbon dioxide |
| 3. | split water and release oxygen |
| 4. | fix inorganic carbon to simple sugars |
Subtopic: Dark Reaction : Calvin Cycle |
80%
Level 1: 80%+
Hints
The correct chronological stages of the Calvin cycle will be:
| 1. | Carboxylation → Reduction → Regeneration |
| 2. | Carboxylation → Regeneration → Reduction |
| 3. | Regeneration → Reduction → Carboxylation |
| 4. | Reduction → Regeneration → Carboxylation |
Subtopic: Dark Reaction : Calvin Cycle |
95%
Level 1: 80%+
Hints
A C3 plant was provided carbon dioxide labelled with a radioactive isotope. The amount of radioactivity was measured in chloroplasts. In which of the following molecules do you expect the radioactivity to appear first as the process of photosynthesis proceeds in this plant?
| 1. | OAA | 2. | PEP |
| 3. | PGA | 4. | RuBP |
Subtopic: Dark Reaction : Calvin Cycle |
68%
Level 2: 60%+
Hints
RuBP is:
| 1. | 2 carbon ketose sugar | 2. | 2 carbon aldose sugar |
| 3. | 5 carbon ketose sugar | 4. | 5 carbon aldose sugar |
Subtopic: Dark Reaction : Calvin Cycle |
87%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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