1. Which among
the following element is essential
for
photolysis of water
(a)
Nitrogen (b)
Chlorine
(c)
Carbon (d)
Oxygen
(e)
Magnesium
2. Plants are
known as purifiers of air due to the
process
of
(a)
Respiration (b)
Photosynthesis
(c)
Transpiration (d) Dessication
(e)
Guttation
3. The
percentage of light absorbed by chlorophyll
from
total absorption is
(a)
12% (b)
83% (c)
96%
(d) 4% (e)
5%
4.
When the CO2 uptake cannot be increased by
increasing the light, it is referred to as:
(a)
Extinction point
(b)
CO2 saturation point
(c)
Light saturation point
(d)
Light compensation point
(e)
None
5. Which among
the following conditions are
favourable for cyclic
photophosphorylation:
(a)
Aerobic condition only
(b)
Aerobic and low light intensity
(c)
Aerobic and optimumk light
(d)
Anaerobic and low light intensity
(e)
Anaerobic and optimum light
6. When
pigment system II is illuminated in presence
of
ferricyanides and NADP, it can carry out
(a)
Hill reaction
(b)
Cyclic photophosphorylation
(c)
Dark reaction
(d)
All of these
(e)
None of these
7. The
synthesis of chlorophyll-a is traced back to
which
component of Kreb’s cycle
(a)
Oxaloacetic acid (b) Succinyl
CoA
(c)
Fumaric acid (d) Oxalosuccinic acid
(e)
Succinic acid
8. Which among
the following plant is used in the study
of
photosynthesis?
(a)
Chlorella (b)
Asparagus
(c)
Garden Pea (d)
Acetabularia
(e)
Hydrilla
9. If X is the
rate of photosynthesis at shorter wave
length
radiation, Y at higher wavelenth, Z is the rate
at the
combination of shorter and higher wavelength,
then
Emerson effect is
(a)
X > Z + Y (b) Z
= X + Y
(c)
Z = X = Y (d) Z
> X + Y
(e)
Z < X + Y
10. During the
dark reaction of photosynthesis
(a)
Water is split
(b)
CO2 is reduced to organic compounds
(c)
Chlorophyll is activated
(d)
6 carbon sugar is broken into 3 carbon sugar
(e)
None
11. The enzyme
that fixes atmospheric CO2 in C4 plant
is
(a)
PEP carboxylase (b) RUBISCO
(c)
RUBP carboxylase (d) Hydrogenase
(e)
Aldolase
12. The number
of carbon atom in the acceptor
compound
of carbondioxide in C3 plants is
(a)
2 (b) 3 (c) 4
(d)
5 (e) 6
13. In C4
plants carbondioxide reduction occur in
(a)
Mesophyll stroma
(b)
Guard cell stroma
(c)
Bundle sheath stroma
(d)
Palisade stroma
(e)
Spongy stroma
14.
The number of ATP and NADPH2 required to fix
one
molecule of CO2 is respectively
(a)
3 and 2 (b) 2
and 3
(c)
5 and 3 (d) 3
and 5
(e)
5 and 2
15. The energy
coming from electrons as radiations
when it
come to the ground state from triplet stage
is
called as:
(a)
Incident light (b) Phosphorescence
(c)
Fluorescence (d) Sunlight
(e)
All of these
16. Formation
of energy currency of cell during
photosynthesis is called as
(a)
Substrate level phosphorylation
(b)
Phosphorylation
(c)
Photophosphorylation
(d)
Oxidative phosphorylation
(e)
None of these
17. The red
drop phenomenon is due to the disruption
of the
photochemical activity of
(a)
Pigment system I
(b)
Pigment system II
(c)
Carotenoids
(d)
PSI and PS II
(e)
Any of these
18. In photosynthesis hydrogen is transferred
from the
light
reaction to the dark reaction by
(a)
DPN (b) DNA
(c)
ATP (d) NADP
(e)
NAD
19. The first
step in photosynthesis is the
(a)
Formation of ATP
(b)
Ionisation of water
(c)
Excitement of an electron of chlorophyll by
light
(d)
Joining of two 3-carbon compound to form
glucose
(e)
Formation of NADH2
20. The
electron gap formed in PS-I during non
cyclic
phosphorylation is filled due to the supply of
electrons coming from
(a)
Pigment system I
(b)
Photolysis of water
(c)
Pigment system II
(d)
Oxidative phosphorylation
(e)
Photophosphorylation
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B
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B
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D
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C
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C
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A
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B
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A
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D
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B
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E
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C
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C
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B
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D
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C
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C
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