191.
Which photosynthetic pigment converts nascent oxygen to molecular oxygen
A
Chlorophyll-a
B
Carotenoids
C
Phycobilins
D
Chlorophyll-b
Answer :
Carotenoids
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192.
DCMU is an inhibitor of
A
PS-I
B
PS-II
C
Calvin cycle
D
Kreb's cycle
Answer :
PS-II
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193.
Photochemical reactions in the chloroplast are directly involved in
A
Formation of phosphoglyceric acid
B
Fixation of carbon dioxide
C
Synthesis of glucose and starch
D
Photolysis of water and phosphorylation of ADP to ATP
Answer :
Photolysis of water and phosphorylation of ADP to ATP
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194.
The enzyme which catalyzes the photosynthetic C4 cycle is
A
RUDP carboxylase
B
PEP carboxylase
C
Carbonic anhydrase
D
None of the above
Answer :
PEP carboxylase
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195.
The first stable product of photosynthesis in C-3 plants is
A
3-phosphoglyceric acid
B
Dihydroxyacentone phophate
C
Fructose-1, 6-diphosphate
D
Ribulose-1, 5-di phosphate
Answer :
3-phosphoglyceric acid
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196.
Chlorophyll 'e' is generally present in
A
Thallophytes
B
Rhodophytes
C
Mycophytes
D
Xanthophytes
Answer :
Xanthophytes
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197.
Which one of the following categories of organisms do not evolve oxygen during photosynthesis
A
Red aglae
B
Photosynthetic bacteria
C
C4-plants with Kranx anatomy
D
Blue green algae
Answer :
C4-plants with Kranx anatomy
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198.
The ultimate gain of light reaction is
A
ATP & NADPH2
B
NADPH2
C
Only ATP
D
Only O2
Answer :
ATP & NADPH2
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199.
Series of reactions which can convert fatty acids to sugars in plants but not in animals is
A
krebs cycle
B
glyoxylate cycle
C
ornithine cycle
D
glycolysis
Answer :
glyoxylate cycle
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200.
Connecting link between light phase and dark phase of photosynthesis
A
Only ATP
B
Only ANDH2
C
Only NADPH2
D
Both A and C
Answer :
Both A and C
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