Q. No.
The step of regeneration of Phosphoenol pyruvate during C4 cycle occurs in:
1.
Only Mesophyll cells
2.
Bundle Sheath cells
3.
both a and b
4.
Passage cells
The Bundle sheath cells are rich in -------- while lacks----.
| 1. | RuBisCo, PEPCase | 2. | PEPCase, RuBisCo |
| 3. | ATPase, Hydrolase | 4. | Hydrolase, ATPase |
How many of them are wrong?
| p. | RuBisCO is the most abundant enzyme in plants only. |
| q. | RuBisCO has active site for O2 only |
| s. | C3 cycle in C4 plants occur in Bundle sheath cells. |
1. 2
2. 3
3. 1
4. 0
The binding of RuBisCO for O2 and CO2 is –
1. Non-competitive
2. Competitive
3. Uncompetitive
4. Mixed
The product of photorespiration-
| 1. | Phosphoglycerate | 2. | Phosphoglycolate |
| 3. | both a and b | 4. | Malate |
Which of the following is wrong regarding photorespiration?
1. utilization of ATP
2. Production of little sugar
3. Release of CO2
4. Wasteful Process
In C4 plants, photorespiration does not occur-
| 1. | They have different RuBisCO. |
| 2. | They have no RuBisCO. |
| 3. | They have mechanism to increase the concentration of CO2 |
| 4. | They cannot utilize ATP |
At any point, the rate of photosynthesis is determined by the factor which is available at---------- levels.
a. optimal
b. higher than required
c. sub-optimal
d. won’t depend
Who gave the law of limiting factors and when?
a. Lieman-1906
b. Blackman-1905
c. Lieman-1905
d. Blackman-1906
What kind of graph one will obtain if he observes CO2 fixation rates at low intensities?
a. Parabola
b. Linear
c. Circular
d. Hyperbola
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