Q. No.In C3 plants, the first stable product of photosynthesis during the dark reaction is:
1. Oxaloacetic acid
2. 3-phosphoglyceric acid
3. Phosphoglyceraldehyde
4. Malic acid
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
Plants adapted to low light intensity have:
| 1. | Higher rate of CO2 fixation than the sun plants |
| 2. | More extended root system |
| 3. | Leaves modified to spines |
| 4. | Larger photosynthetic unit size than the sun plants |
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 |
For the synthesis of one glucose molecule, the Calvin cycle operates for:
| 1. | 2 times | 2. | 4 times |
| 3. | 6 times | 4. | 8 times |
1. 2 ATP & 2 NADPH2
2. 5 ATP & 3 NADPH2
3. 3 ATP & 2 NADPH2
4. 18 ATP & 12 NADPH2
Which is the first CO2 acceptor enzyme in C4 plants:
1. RuDP Carboxylase
2. Phosphoric acid
3. RUBISCO
4. PEP-Carboxylase
In photosynthesis, energy from light reaction to dark reaction is transferred in the form of:
1. ADP
2. ATP
3. RUDP
4. Chlorophyll
Which of the following absorbs light energy for photosynthesis:
1. Chlorophyll
2. Water molecule
3. O2
4. RUBP
What happens in light reaction (Photo chemical reaction):
1. Formation of ATP and NADPH2
2. Formation of ATP
3. Formation of sugar
4. Breakdown of sugar
© 2025 GoodEd Technologies Pvt. Ltd.