1) Which of
the following radioactive oxygen was used to detect the source of oxygen in
photosynthesis
A) O12
B) O16
C) O18
D) O15
2) If in a photosynthetic system H2O18 type is
provided, what will be the type of oxygen released in the process
A) O18
B) O16
C) O2 normal
D) None of
the above
3) During formation of glucose which of the
following is obtained from water
A) Oxygen
B) Hydrogen
C) Both [a]
and [b]
D) None of
the above
4) Which of the following is obtained from CO2
during glucose manufacture
A) Oxygen
B) Carbon
C) Both [a]
and [b]
D) None of
the above
5) Warburg studied his effect on
A) Chlamydomonas
B) Chlorella
C) Volvox
D) All the
above
6) McAlister and Mayer have studied the
Warburg's effect on
A) Pea
B) Arachis
C) Soyabean
D) All the
above
7)
Discovery of Emerson effect has clearly shown the existence of [MP PMT 1987;
BHU 1979]
A) Two
distinct photochemical reactions or processes
B) Light
and dark reactions in photosynthesis
C)
Photophosphorylation
D)
Photorespiration
8) During photosynthesis, the oxygen in
glucose comes from [DPMT 1982, 83; CPMT 1972, 81; MP PMT 1984]
A) Water
B) Carbon
dioxide
C) Both
from CO2 and water
D) Oxygen
in air
9) The
experimental material that has largely been responsible for making rapid
advances in research on photosynthesis is [CPMT 1985; RPMT 2002]
A)
Chlamydomonas
B) Spinach
leaf
C)
Chlorella
D) Hydrilla
10) Which
of the method is more effective to know the chemical pathway of a physiological
process
A)
Titration method
B)
Calorimetric method
C) Tracer
technique
D) None of
the above
11) The oxygen produced during photosynthesis
comes from photolysis of water was first time proved by [MP PMT 1984, 88, 95]
A) Ruben
and Kamen
B) Robert
Mayer
C) Malvin
Calvin
D) Blackman
12) The first experiment on photosynthesis in
flashing light were carried out by [MP PMT 1990]
A) F. F.
Blackman
B) Robert
Emerson and Arnold
C) Melvin
Calvin
D) Robert
Hill
13) Moll's experiment shows [MP PMT 1989; AFMC
1987; KCET 2001]
A) Unequal
transpiration from two surfaces of leaf
B) Relation
between transpiration and absorption
C) CO2 is
required for photosynthesis
D) Chlorophyll
is essential for photosynthesis
14) Algae used by Calvin and associates for
photosynthetic research is [BHU 1987, 91; RPMT 2002]
A) Chlorella
B) Chlamydomonas
C) Volvox
D) All the
above
15) The
path of CO2 in the dark reaction of photosynthesis was successfully traced by
the use of the following or the dark reaction is traced by [CPMT 1990; MP PMT
1987; BHU 1992]
A) O218
B) C14O2
C) p36
D) X-rays
16)
Blackman demonstrated that increasing illumination increased the photosynthetic
rate up to a point when CO2 becomes limiting. If light was not limiting,
temperature becomes limiting. Emerson found that maximum CO2 fixation could be
achieved with brief flashes of light. Mark the correct statement in the following
[CPMT 1988, 89]
A) Only one
factor can be limited in photosynthesis
B)
Photosynthesis consists of a light and dark reaction
C) The
trapping of light by chloroplast is temperature dependent
D) The
trapping of light by chloroplast can occur only if CO2 is present
17) Persons who received Nobel Prizes for
their work with green plants are [NCERT 1984]
A) Calvin
and Waston
B) Calvin
and Borlang
C) Beadle
and Tatum
D) Flemming
and Waksman
18) The thylakoids are removed and kept in a
culture medium containing CO2 and H2O. If the setup is exposed to light, hexose
sugars are not formed as the end product. The most appropriate reason for this
will be that [AIIMS 1980, 85]
A) Carbon
assimilation cannot take place
B) The
pigments (P-700 and P-680) are not linked
C) Enzymes
are not available
D) The
light trapping device is not functional
19)
Isotopes popularly known to have been used in the study of photosynthesis are
[BHU 1985]
A) C14 and O18
B) C11 and C32
C) C16 and N15
D) p32 and C15
20) Extraction and separation of chlorophylls
and carotenoids tackles by
A) Moll's
half-leaf experiment
B) Paper
chromatography method
C) Ganong's
light screen
D) All the
above
21) The graph given below shows the effect of
potassium cyanide on the rate of photosynthesis of Chlorella at different light
intensities. Which one of the following can be deduced from the graph?
A)
Potassium cyanide appears to inhibit the light (Hill) reaction
B)
Potassium cyanide appears to absorb more light at high light intensities
C)
Potassium cyanide appears to inhibit photosynthesis equally at high and low
light intensities
D)
Potassium cyanide appears to have no inhibiting effect on photosynthesis at low
light intensities
22) When a rat was placed into a closed
container, it got suffocated and died but when a plant was also introduced into
it, the rat survived. Who performed this experiment
A)
Ingenhousz
B)
Priestley
C)
Englemann
D) Thimann
23) What plant is used in an experiment
commonly performed in laboratory in demonstrate evolution of oxygen in
photosynthesis [RPMT 1997]
A)
Sunflower
B) Hydrilla
C) Croton
D) Balsam
24) Two plants A and B are supplied with CO2 with
H2O18 and CO218 with H2O respectively which of the following plant releases O18
type oxygen in photosynthesis [CPMT 2000]
A) A plant
B) B plant
C) Both [a]
and [b]
D) First
[a] and then [b]
25) Path of
carbon in photosynthesis was found by using [Kerala CET 2002]
A) Centrifugation
B) Radio
isotopes
C)
Fractionation
D)
Chromatography
26) Engelmann's experiment with Spirogyra
demonstrated that [BVP 2003]
A) The full
spectrum of sunlight is needed for photosynthesis
B) Only red
wavelengths are effective in causing photosynthesis
C) Only
blue wavelengths are effective
D) Both
blue and red wavelengths are effective
27) Pastur's effect is [Wardha 2005]
A) Stoppage
of fermentation in presence of oxygen
B) Increase
in fermentation in presence of oxygen
C) Decrease
in fermentation in presence of oxygen
D) No
effect on fermentation
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