Q. No.Which pigment acts directly to convert light energy to chemical energy?
1. Chlorophyll a.
2. Chlorophyll b.
3. Xanthophyll.
4. Carotenoid.
The process which makes a major difference between C3 and C4 plants is:
| 1. | glycolysis | 2. | Calvin cycle |
| 3. | photorespiration | 4. | respiration |
Examine the figure given below and select the wrong option
| 1. | A - Present in only grana lamellae. |
| 2. | B - involves downhill movement of electrons in terms of oxidation-reduction potential. |
| 3. | C - Absorbs 700 nm light. |
| 4. | The electrons return back to the reaction center. |
In the given graph what does A, B represent?
| 1. | A - Absorption spectrum; B - Action spectrum (Chl. a). |
| 2. | A - Action spectrum; B - Absorption spectrum (carotenoids). |
| 3. | A - Absorption spectrum; B - Action spectrum (Ch. b). |
| 4. | A - Action spectrum; B - Absorption spectrum (Ch.a). |
Consider the following statements:
| I: | Accessory pigments enable a wider range of light to be utilized for photosynthesis. |
| II: | The reaction center of PSI is P680 and that of PSII is P 700. |
| III: | The stroma lamellae membranes lack both PSII and NADP reductase. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
1. epidermal cells
2. mesophyll cells
3. bundle sheath
4. guard cells
| 1. | high energy bonds are formed in mitochondrial proteins |
| 2. | ADP is pumped out of the matrix into the inter-membrane space |
| 3. | a proton gradient forms across the inner membrane |
| 4. | there is a change in the permeability of the inner mitochondrial membrane toward Adenosine Diphosphate (ADP) |
In plant cells, synthesis of ATP by the chemiosmotic
mechanism occurs during
1. Photosynthesis only.
2. Respiration only.
3. Both photosynthesis and respiration.
4. Photorespiration only.
Water stress may cause which of the following?
a. Closure of stomata
b. Wilting of leaf
c. reducing metabolic activity
d. all of these
Temperature will affect which process more sensitively?
a. Dark process
b. Non Cyclic Process
c. Cyclic Process
d. Splitting of water
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