Q. No.One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of:
1. Violet and green light
2. Indigo and green light
3. Orange and yellow light
4. Blue and red light
| 1. | Green sulphur bacteria | 2. | Nostoc |
| 3. | Cycas | 4. | Chara |
Dark reaction in photosynthesis is called so because:
1. It can occur in dark also
2. It does not depend on light energy
3. It cannot occur during day light
4. It occurs more rapidly at night
In photosynthesis, the light-independent reactions take place at?
1. Thylakoid lumen
2. photosystem I
3. photosystem II
4. Stromal matrix
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
Photosynthetic Active Radiation (PAR) has the following range of wavelengths
1. 340-450 nm
2. 450-950 nm
3. 500-600 nm
4. 400-700 nm
The first step for initiation of photosynthesis will be:
| 1. | Photolysis of water |
| 2. | Excitement of chlorophyll molecule due to absorption of light |
| 3. | ATP formation |
| 4. | Glucose formation |
Which of the following absorbs light energy for photosynthesis:
1. Chlorophyll
2. Water molecule
3. O2
4. RUBP
| 1. | 780 nm | 2. | 680 nm |
| 3. | 700 nm | 4. | 660 nm |
| List - I | List - II | ||
| (A) | Chlorophyll a | (I) | Yellow to yellow orange |
| (B) | Chlorophyll b | (II) | Yellow green |
| (C) | Xanthophyll | (III) | Blue green |
| (D) | Carotenoids | (IV) | Yellow |
| Options: | (A) | (B) | (C) | (D) |
| 1. | III | II | IV | I |
| 2. | III | I | IV | II |
| 3. | II | III | I | IV |
| 4. | IV | III | II | I |
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