51.
Fixation of one $$C{O_2}$$ molecule through Calvin cycle requires
A
1 ATP and 2NADPH2
B
2ATP and 2NADPH2
C
3ATP and 2NADPH2
D
2ATP and 1NADPH2
Answer :
3ATP and 2NADPH2
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52.
The family in which many plants are C4 type
A
Malvaceae
B
Solanaceae
C
Crucifereae
D
Graminae
Answer :
Graminae
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53.
"Kranz Anatomy" is found in
A
Flower
B
Seed
C
Leaves
D
Stem
Answer :
Leaves
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54.
The $${C_4}$$ plants are photosynthetically more efficient than $${C_3}$$ plants because:
A
the $$C{O_2}$$ compensation point is more
B
$$C{O_2}$$ generated during photorespiration is trapped and recycled through PEP carboxylase
C
the $$C{O_2}$$ efflux is not prevented
D
they have more chloroplasts
Answer :
they have more chloroplasts
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55.
Photosynthesis is an oxidation reduction process, the materials that is oxidised in
A
CO2
B
NADP
C
H2O
D
PGA
Answer :
H2O
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56.
Porphyrin is occurs in
A
Chlorophyll
B
Haemoglobin
C
Cytochrome
D
All of the above
Answer :
All of the above
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57.
Mill's experiment explain that
A
Carbon dioxide is essential for photosynthesis
B
Chlorophyll and water are necessary for photosynthesis
C
Light and water are essential for photosynthesis
D
All of the above
Answer :
Carbon dioxide is essential for photosynthesis
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58.
What does not occur in photorespiration
A
Utilization of O2
B
Production of CO2
C
Synthesis of ATP
D
All of the above
Answer :
Synthesis of ATP
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59.
Photosynthesis is
A
Oxidative, exergonic, catabolic
B
Redox-reaction, endergonic, anabolic
C
Reductive, exergonic, anabolic
D
Reductive, endergonic, catabolic
Answer :
Redox-reaction, endergonic, anabolic
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60.
What is called "warbur's effect" on photosynthesis
A
Low rate of process due to O2 supply
B
Low rate of the process due to CO2 supply
C
A and B both
D
None of the above
Answer :
Low rate of process due to O2 supply
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