Q. No.The current concentration of CO2 in the atmosphere is between
1. 0.03% to 0.04%
2. 21% to 22%
3. 78% to 79%
4. 3% to 4%
2. 21% to 22%
3. 78% to 79%
4. 3% to 4%
The light saturation occurs at _______ of the total sunlight available to the plants. Select the correct option to fill in the blank.
1. 75%
2. 50%
3. 10%
4. 2%
The chloroplast stroma lamella membrane:
| 1. | Lacks PS II as well as NADP reductase enzyme. |
| 2. | Lacks PS II but has NADP reductase enzyme. |
| 3. | Lacks NADP reductase enzyme but has PS II. |
| 4. | Has PS II as well as NADP reductase enzyme. |
CO2 is utilized for the carboxylation of RuBP inside the bundle sheath cells of
1. Maize, Sorghum.
2. Tomato, Bell pepper.
3. Cacti, Sedum.
4. Rice, Wheat.
The _____________ in the leaves, have a large number of_________, which align themselves along the walls of the ____________, such that they get the __________quantity of the incident light.
| 1. | chloroplasts, chlorophyll, chloroplasts, optimum |
| 2. | mesophyll cells, chlorophyll , mesophyll cells, optimum. |
| 3. | mesophyll cells, chloroplasts, mesophyll cells, optimum. |
| 4. | mesophyll cells, chloroplasts, mesophyll cells, minimum |
Melvin Calvin used ------- radioactive in-----studies for the discovery of the first CO2 fixation product.
1. 14C , Fungal photosynthesis
2. 14C , Algal photosynthesis
3. 15N , Fungal photosynthesis
4. 15N , Algal photosynthesis
Light can be limiting factor for photosynthesis for the
| 1. | Tall trees growing in a field |
| 2. | Plants growing in shade or in dense forest |
| 3. | Shrubs growing in grassland |
| 4. | Crop plants growing in crop field |
The C4 plants differ from C3 plants with reference to the
| 1. | substrate that accepts CO2 in carbon assimilation |
| 2. | type of end product |
| 3. | type of pigment involved in photosynthesis |
| 4. | end product that will be formed |
Synthesis of ATP from ADP and inorganic phosphate in the presence of light is known as-
1. phosphorylation
2. photo-phosphorylation
3. photorespiration
4.photooxidation
The difference in development of proton gradient in photosynthesis and respiration is-
| 1. | Photosynthesis has thylakoid membrane across which proton gradient is generated |
| 2. | Proton accumulation is inside the membrane of thylakoid. |
| 3. | both a and b |
| 4. | Mitochondrial membrane is involved |
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