Observe the graph given below and choose the correct option :
1. Light is a limiting factor at the region marked A
2. At the point D of light intensity the rate of photosynthesis is maximum
3. Both (1) and (2)
4. The region marked C shows continuous increase in the rate of photosynthesis
1. RuBP and PEP
2. PEP and RuBP
3. 3-PGA and PEP
4. RuBP and 3-PGA
| C3 Plant CO2 : ATP : NADPH + H+ |
C4 Plant CO2 : ATP : NADPH + H+ |
|
| 1. 2. 3. 4. |
6 : 30 :12 1 : 5 : 2 6 :18 :12 1 : 3 : 2 |
6 :18 : 12 1 : 3 : 2 6 : 30 : 12 1 : 5 : 2 |
1. Both uses only PS-I
2. Both makes sugar without C3 cycle
3. In both cases, initial carboxylation does not involve RuBisCO
4. Both possess agranal chloroplast only
Assertion(A) : Plants possessing C4 -pathway of carbon fixation have a higher net primary productivity than the C3 -pathway possessing plants.
Reason(R) : For each unit weight of fixed carbon, C4 -pathway possessing plants require less water than C3 -pathway possessing plants.
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of assertion.
3. If assertion is true but the reason is false.
4. If both assertion and reason are false statements.
Reason(R) : Chlorophyll-\(\alpha\) is present in both PS-I and PS-II
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of assertion.
3. If assertion is true but the reason is false.
4. If both assertion and reason are false statements.
Reason(R) : The CO2 compensation point in reached when the amount of CO2 uptake is less than that generated through respiration because the level of CO2 in the atmosphere is more than that required for achieving CO2 compensation point.
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of assertion.
3. If assertion is true but the reason is false.
4. If both assertion and reason are false statements.
Reason(R) : It occurs only in absence of light.
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of assertion.
3. If assertion is true but the reason is false.
4. If both assertion and reason are false statements.
Reason(R) : Photolysis of water takes place towards lumen side of thylakoid.
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of assertion.
3. If assertion is true but the reason is false.
4. If both assertion and reason are false statements.
Reason(R) : If atmospheric CO2 concentration increases then, C3 plants will be benefitted.
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of assertion.
3. If assertion is true but the reason is false.
4. If both assertion and reason are false statements.
© 2024 GoodEd Technologies Pvt. Ltd.