- 1(current)
Q. No.Which pigment acts directly to convert light energy to chemical energy?
1. Chlorophyll a.
2. Chlorophyll b.
3. Xanthophyll.
4. Carotenoid.
Which regions of the visible spectrum are responsible for most of the photosynthesis?
a. blue and yellow
b. blue and red
c. blue and green
d. green and red
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). |
In the given diagram, X, Y, and Z respectively represent the absorption spectrum of:
1. Chlorophyll a, Chlorophyll b, and Carotenoids
2. Chlorophyll b, Chlorophyll a, and Carotenoids
3. Chlorophyll b, Carotenoids, and Chlorophyll a
4. Chlorophyll a, Carotenoids, and Chlorophyll b
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 |
Photosynthetically active radiation (PAR) represents the following range of wavelengths:
1. 450-950 nm
2. 340-450 nm
3. 400-700 nm
4. 500-600 nm
- 1(current)
Q. No.
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