251.
Chlorophyll contains
A
Fe
B
Mg
C
K
D
Mn
Answer :
Mg
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252.
Maximum solar energy is trapped by
A
planting trees
B
cultivating crops
C
growing algae in tanks
D
growing grasses
Answer :
growing algae in tanks
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253.
During photosynthesis the oxygen in glucose comes from
A
Water
B
Carbon di oxide
C
O2 in air
D
Both form water and CO2
Answer :
Carbon di oxide
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254.
Oxygen which is liberated during Photosynthesis comes from
A
Carbon di oxide
B
Water
C
Chlorophyll
D
Phosphoglyceric acid
Answer :
Water
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255.
How many molecules of water are needed by a green plant to produce one molecule of hexose/reduce 6 molecules of CO2
A
6
B
12
C
24
D
Only one
Answer :
12
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256.
Which one of the following have high CO2 compensation point
A
C3 plants
B
C3 plants
C
C4 plants
D
Alpine herbs
Answer :
C3 plants
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257.
Plants adapted to low light intensity have
A
larger photosynthetic unit size that the sun plants
B
higher rate of $$C{O_2}$$ fixation that the sun plants
C
more extended root system
D
leaves modified to spines
Answer :
larger photosynthetic unit size that the sun plants
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258.
Which occurs during the light reaction of photosynthesis
A
Chlorophyll is produced
B
Water splits to form 2H+ & O2
C
CO2 is given off as a waste
D
Sugar is formed from CO2 and water
Answer :
Water splits to form 2H+ & O2
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259.
During ATP synthesis electron pass through
A
Water
B
Cytochromes
C
O2
D
CO2
Answer :
Cytochromes
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260.
The important role of PS-Ii photosynthesis is
A
To cause photolysis of water
B
To release energy
C
To trap & assimilate CO2
D
To reduce NAD to NAD.H2
Answer :
To cause photolysis of water
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