Related Questions
Photosynthesis in plants is relatively less limited by atmospheric carbon dioxide levels because
Four carbon acids are the initial carbon dioxide acceptors
The primary fixation of carbon dioxide is mediated via PEP carboxylase
Effective pumping of into bundle sheath cells
Rubisco in plants has higher affinity for
Number of carboxylation occurs in Calvin cycle is
1
2
3
6
The energy and reducing power required for fixing one molecule of carbon dioxide in the Calvin cycle are provided by:
1 ATP and 2 NADPH
2 ATP and 1 NADPH
3 ATP and 2 NADPH
2 ATP and 3 NADPH
In which cells of leaf, pyruvate is converted to PEP in pathway?
Epidermal cells
Mesophyll cells
Bundle sheath cells
Guard cells
3-PGA is first stable product in
Carbon-reduction cycle
Photorespiration
Light reaction
All of these
In C4 plants, the initial fixation of CO2 occurs in mesophyll cells, forming a 4-carbon compound. This compound then travels to bundle sheath cells, where it releases CO2. What is the PRIMARY advantage of this spatial separation of CO2 fixation and the Calvin cycle?
Increases the efficiency of light absorption
Minimizes photorespiration by increasing CO2 concentration around RuBisCO
Reduces the need for water
Allows the plant to fix CO2 at night
In the absence of which of the following pairs of molecules would the Calvin cycle cease to function?
Light and Chlorophyll
ATP and NADPH
and
Water and Light
Which of the following characteristics out of A, B and C are exhibited by plants? A. Kranz anatomy B.The product of photosynthesis is oxaloacetic acid C. Both PEP carboxylase and ribulose-bisphosphate carboxylase act as carboxylating enzymes.
Only A and B, but not C
Only B and C, but not A
Only A and C, but not B
All A, B and C
