Read the following four statements A, B, C and D and select the right option having both correct statements:
STATEMENTS:
(A) | Z-scheme of light reaction takes place in the presence of PSI only |
(B) | Only PSI functional in cyclic photophosphorylation |
(C) | Cyclic photophosphorylation results in a synthesis of ATP and NADPH2 |
(D) | Stroma lamellae lack PSII as well as NADP |
Options:
1. A and B
2. B and C
3. C and D
4. B and D
In Kranz anatomy, the bundle sheath cells have:
1. | thick walls, many intercellular spaces and few chloroplasts |
2. | thin walls, many intercellular spaces and no chloroplasts |
3. | thick walls, no intercellular spaces and a large number of chloroplasts |
4. | thin walls, no intercellular spaces and several chloroplasts |
Study the pathway given below:
In which of the following options, correct words for all the three blanks A, B and C are indicated?
A | B | C | |
1. | Fixation | Transamination | Regeneration |
2. | Fixation | Decarboxylation | Regeneration |
3. | Carboxylation | Decarboxylation | Reduction |
4. | Decarboxylation | Reduction | Regeneration |
Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:
1. Membrane potential
2. Accumulation of K ions
3. Proton gradient
4. Accumulation of Na ions
Photosynthesis in C4 plants is relatively less limited by atmospheric levels because:
1. | The primary fixation of CO2 is mediated via PEP carboxylase |
2. | Effective pumping of CO2 into bundle sheath cells |
3. | Four carbon acids are the primary initial CO2 fixation products |
4. | RuBisCO in C4 plants has a higher affinity for CO2 |
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
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 |
For the assimilation of one CO2 molecule in C3 plants, the energy required in the form of ATP and NADPH2 is:
1. 2 ATP & 2 NADPH2
2. 5 ATP & 3 NADPH2
3. 3 ATP & 2 NADPH2
4. 18 ATP & 12 NADPH2