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Q. No.The bundle sheath cells are characterized by:
I:
a large number of chloroplasts present in them
II:
thick cell walls impervious to gas exchange
III:
large intercellular spaces
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: Question on C4 Pathway |
75%
Level 2: 60%+
Hints
The primary acceptor in plants is:
| 1. | RuBP in mesophyll cells |
| 2. | RuBP in bundle sheath cells |
| 3. | PEP in mesophyll cells |
| 4. | PEP in bundle sheath cells |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
84%
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 |
87%
Level 1: 80%+
Hints
In pathway, the 4-carbon compound transported to bundle sheath cells most commonly is:
| 1. | Glutamic acid | 2. | Malic acid |
| 3. | Oxaloacetic acid | 4. | Fumaric acid |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
74%
Level 2: 60%+
Hints
The 2-carbon compound formed in photorespiration is:
| 1. | Acetyl CoA | 2. | Phosphoglycolate |
| 3. | Acetic acid | 4. | Ethanol |
Subtopic: Photorespiration |
87%
Level 1: 80%+
Hints
Except for plants in shade or in dense forests, light is rarely a limiting factor in nature. This is because:
| 1. | Dark reactions do not depend on light |
| 2. | The rate of photosynthesis can be increased by higher carbon dioxide and lower temperatures even in low light conditions |
| 3. | Light saturation occurs at 10 % of full sunlight |
| 4. | Carbon fixation is independent of enzymes |
Subtopic: Factors Affecting Photosynthesis |
84%
Level 1: 80%+
Hints
The correct sequence of flow of electrons in the light reaction is
| 1. | PSII, plastoquinone, cytochromes, PS I, ferredoxin |
| 2. | PSI, plastoquinone, cytochromes, PS II, ferredoxin |
| 3. | PSI, ferredoxin, PS II, |
| 4. | PSI, plastoquinone, cytochromes, PS II, ferredoxin |
Subtopic: Light Reaction: Electron Transport |
93%
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 factors that can be limiting for the light independent reactions of photosynthesis are:
| 1. | CO2, temperature, and light |
| 2. | CO2, light, and water |
| 3. | water, temperature, and CO2 |
| 4. | oxygen, water, and temperature |
Subtopic: Factors Affecting Photosynthesis |
Level 3: 35%-60%
Hints
The wavelengths of light most useful in photosynthesis are:
| 1. | green and orange | 2. | red and blue |
| 3. | infrared and yellow | 4. | red and green |
Subtopic: Pigments |
94%
Level 1: 80%+
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