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Q. No.if CO2 : O2 concentration is equal, then the RuBisCO binds:
1. Randomly to either CO2 or O2
2. To CO2
3. To O2
4. Neither to CO2 nor O2
Subtopic: Photorespiration |
85%
From NCERT
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How many 3 PGA molecules will be formed from the 20 RuBP molecules, if CO2 : O2 is 1:10?
1. 40
2. 20
3. 10
4. 15
1. 40
2. 20
3. 10
4. 15
Subtopic: Dark Reaction : Calvin Cycle |
58%
From NCERT
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Which of the following will become a limiting factor for photosynthesis under cold conditions?
1. Water
2. CO2 concentration
3. Chlorophyll
4. Temperature
1. Water
2. CO2 concentration
3. Chlorophyll
4. Temperature
Subtopic: Factors Affecting Photosynthesis |
84%
From NCERT
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In which of the following cases, light will become a limiting factor?
1. In case of high light intensity
2. In case of low temperature
3. In case of plants in dense forests
4. In case of water scarcity
1. In case of high light intensity
2. In case of low temperature
3. In case of plants in dense forests
4. In case of water scarcity
Subtopic: Factors Affecting Photosynthesis |
82%
From NCERT
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What effect will be observed on rate of photosynthesis, if the light intensity given to the plant is 10 percent of the full sunlight?
1. It will increase
2. It will decrease
3. It will saturate
4. The process will be stopped
1. It will increase
2. It will decrease
3. It will saturate
4. The process will be stopped
Subtopic: Factors Affecting Photosynthesis |
72%
From NCERT
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Which among the following is the major limiting factor for photosynthesis?
1. Light
2. CO2 concentration
3. Temperature
4. Water
1. Light
2. CO2 concentration
3. Temperature
4. Water
Subtopic: Factors Affecting Photosynthesis |
86%
From NCERT
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In order to achieve higher yield of bell pepper, how CO2 concentration should be modified?
1. Higher CO2 concentration should be given
2. Lower CO2 concentration should be given
3. No CO2 concentration should be given
4. CO2 concentration needs no modification
1. Higher CO2 concentration should be given
2. Lower CO2 concentration should be given
3. No CO2 concentration should be given
4. CO2 concentration needs no modification
Subtopic: Factors Affecting Photosynthesis |
90%
From NCERT
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All of the following plants have higher value of optimum temperature, except
1. C4 plants
2. Tropical plants
3. Xerophytic plants
4. Temperate plants
1. C4 plants
2. Tropical plants
3. Xerophytic plants
4. Temperate plants
Subtopic: Factors Affecting Photosynthesis |
67%
From NCERT
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Select the odd one out w.r.t. water stress
1. Reduces CO2 availability
2. Reduces metabolic activity
3. Reduces temperature
4. Reduces transpiration
1. Reduces CO2 availability
2. Reduces metabolic activity
3. Reduces temperature
4. Reduces transpiration
Subtopic: Factors Affecting Photosynthesis |
71%
From NCERT
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In a hypothetical condition, if the thylakoid membrane tears off causing the lumen of thylakoid continuous with the stroma, which of the following processes is likely to be most affected?
1. Reduction of NADP+ to NADPH
2. Absorption of sunlight by chloroplast
3. Movement of electrons from PS II to PS I
4. ATP synthesis
1. Reduction of NADP+ to NADPH
2. Absorption of sunlight by chloroplast
3. Movement of electrons from PS II to PS I
4. ATP synthesis
Subtopic: Chemiosmotic hypothesis |
67%
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