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 |
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 |
The factors that can be limiting for the light independent reactions of photosynthesis are:
1. , temperature, and light
2. , light, and water
3. water, temperature, and
4. oxygen, water, and temperature
The absorption spectrum in the given diagram will be of:
1. | Chlorophyll a | 2. | Chlorophyll b |
3. | Carotenoids | 4. | Retinol |
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 |
Oxygen, during oxygenic photosynthesis, is produced during:
1. cyclic photophosphorylation
2. the light-dependent reactions involving photosystems I and II
3. Calvin cycle
4. the Krebs cycle
In oxygenic photosynthesis, the release of oxygen is a byproduct of:
1. chemiosmosis
2. reducing by FNR
3. splitting the water molecules
4. cyclic photophosphorylation
The greatest problem with photorespiration is faced by:
1. | C4 plants | 2. | C3 plants |
3. | CAM plants | 4. | purple sulfur bacteria |
The diagram shows the famous Engelmann experiment that helped us understand important aspects of the process of photosynthesis. What conclusion can be drawn by the pattern of accumulation of aerobic bacteria shown in the diagram?
1. | Excess carbon dioxide is released by the alga in the area of accumulation. |
2. | Only red and violet lights are effective for photosynthesis. |
3. | In the areas of accumulation, most oxygen was liberated by the alga. |
4. | Bacteria are attracted to red and blue light. |
The Engelmann experiment shown in the given diagram helped to understand the relationship between:
1. | bacteria and the alga used in the experiment. |
2. | the rate of respiration in aerobic bacteria and wavelengths of light. |
3. | wavelengths of light and the oxygen released during photosynthesis. |
4. | rates of oxygen liberation by alga and carbon dioxide liberated by the bacteria. |