CRITICAL THINKING
·
1) Who studied the ultrastructure of bundle sheath
·
2) What is meant by fret membrane
A)
Thylakoids
B)
Quantasomes
C)
Stroma lamellae
D)
Outer membranes of chloroplast
·
3) Which of the following is correct for photosynthesis
A)
Biological oxidation process
B)
Photochemical catabolic process
C)
Photo-oxidative metabolism
D)
Biological photometabolism
·
4) Which of the following may show photosynthesis in moonlight
A)
Some thermal algae
B)
Some marine algae
C)
Some fresh water algae
D)
None of the above
·
5) The maximum evolution of oxygen is by greatest producers of
organic matter [DPMT 1990; CBSE PMT 1989]
A)
Great land area
B)
Crops
C)
Phytoplankton of sea
D)
Forests
·
6) Chloroplast contains maximum quantity of [BHU 1981; BCECE 2005]
A)
Pyruvic carboxylase
B)
Hexokinase
C)
RuDP carboxylase
D)
None of the above
·
7) What is common between photosynthesis and respiration [BHU
1995; AFMC 1995; MP PMT 1996; Haryana PMT 2005]
A)
Cytochrome
B)
Light
C)
H2O
D)
Temperature
·
8) Photosynthesis is [JIPMER 1986; CPMT 1988, 90]
A)
Oxidative, exergonic, catabolic
B)
Reductive, endergonic, anabolic
C)
Reductive, exergonic, anabolic
D)
Reductive, endergonic, catabolic
·
9) Which of the following can photosynthesize at low temperature
[BVP 2000]
A)
Bacteria
B)
Lichen
C)
Yeast
D)
Batrachospermum
·
10) The electron transport chain of photosynthetic process is
[JIPMER 2002]
A)
In the stroma of the chloroplast
B)
Bound to the thylakoid membranes
C)
Present in the outer membrane of the chloroplast
D)
Present in mitochondria
·
11) What percentage of usable radiant energy entering a reaction
site of photosynthesis is converted to potential energy [BHU 2002]
A)
10%
B)
20%
C)
35%
D)
42%
·
12) Chlorophyll 'a' is found in [CBSE PMT 1992]
A)
All oxygen releasing photosynthetic forms
B)
All plants except fungi
C)
All higher plants that photosynthesize
D)
All photosynthetic prokaryotes and eukaryotes
·
13) The emperical formula for chlorophyll 'a' is [KCET (Med.)
1994, 2000; AFMC 1994]
A)
C35H72O5N4Mg
B)
C55H70O6N4Mg
C)
C55H72O5N4Mg
D)
C54H70O6N4Mg
·
14) Which of the following product of Hill's reaction are used in
Blackman's reaction [AMU 1989]
A)
NAD, ATP
B)
ATP, NADH2
C)
ATP, NADPH2
D)
ADP, NAD
·
15) Chlorophyll 'a' molecule at its carbon atom 3 of the pyrrole
ring II has one of the following [CBSE PMT 1996, 97]
A)
Aldehyde group
B)
Methyl group
C)
Carboxylic group
D)
Magnesium
·
16) When the two pigment systems absorb light, in what direction
does the energy flow between them
A)
PS-I (R) PS-II
B)
PS-II (R) PS-I
C)
PS-II ? PS-I
D)
None of the above
·
17) In photosynthesis, photolysis of water is used in [CPMT 1998]
A)
Reduction of NADP
B)
Oxidation of NADP
C)
Oxidation of FAD
D)
None of these
·
18) The photosynthetic pigments viz, erythrolable, chlorolable and
cyanolable respectively are [JIPMER 2001]
A)
Green, Red, Blue
B)
Red, Blue, Green
C)
Red, Green, Blue
D)
Blue, Green, Red
·
19) Energy transfer in photosynthesis occurs as [BHU 2003]
A)
Phycoerythrin
→
Phycocyanin
→
Carotenoid
→
Chlorophyll a
B)
Chlorophyll b
→
Carotenoid
→
Phycoerythrin
→
Chlorophyll a
C)
Phycocyanin
→
Phycoerythrin
→
Carotenoid
→
Chlorophyll a
D)
Chlorophyll
→
Carotenoid
→
Phycocyanin
→
Chlorophyll a
·
20) Photosynthesis consists of essentially two biological reaction
systems, one followed by the other, the second of these systems does which of
the following [CPMT 1988]
A)
Fixes
CO2
B)
Traps light energy
C)
Synthesizes starch
D)
Works only in the presence of light
·
21) During dark reaction for fixation of carbon, the three carbon
atoms of each molecule of 3-phosphoglyceric acid (PGA) are derived from [BHU
1994]
A)
RuBP only
B)
CO2
only
C)
RuBP+CO2
D)
RuBP+CO2+PEP
·
22) Calvin's cycle is found in [RPMT 1997]
A)
Only
C3
plants
B)
Only photophillous plants
C)
All
C4
plants
D)
All photosynthetic plants
·
23) The first intermediate formed during photosynthesis is [CPMT
2000]
A)
Fructose 1, 6-diphosphate
B)
Ribulose 1, 5-biphosphate
C)
Xylulose-5-phosphate
D)
Phosphoglyceraldehyde
·
24) First transitory chemical formed by reaction between
CO2
and
RuBP
is [J & K CET (Med.) 2002]
A) PGAL/GAP
B) 2 Carboxy, 3- keto,
1-5 biphospho ribotol
C) PGA
D) Dihydroxy acetone
phosphate
·
25) As compared to a
C3
plant, how many additional molecules of ATP are needed for
net production of one molecule hexose sugar by
C4
plants [CBSE PMT 2005]
A) Two
B) Six
C) Zero
D) Twelve
·
26)
C4
plants are found among [BHU 1990]
A) Gramineae only
B) Monocots only
C) Dicots only
D) Monocots as well as
dicots
·
27) An organism that photosynthesizes but do not release any
molecular oxygen during the process is
A)
Algal component of a lichen
B)
Blue-green algae
C)
Green sulphur bacteria
D)
Spirochaete
·
28) Bacteriochlorophyll differs from chlorophyll 'a' in
having [CPMT 1989]
A)
One pyrrol ring with one hydrogen
B)
One pyrrol ring with two hydrogen
C)
One pyrrol ring with three hydrogen
D)
One pyrrol ring with four hydrogen
·
29) In chemosynthesis of
NO2
bacteria, the carbohydrates are formed by
A)
NO2
and
H2O
B)
NH3
and
CO2
C)
CO2
,
H2O
and
SO2
D) Hydrocarbons
·
30) The plants which perform the act of photosynthesis
−20oC
are
A) Palm plants
B) Mango plants
C) Lichens
D) All the above
·
31) Photosynthesis will proceed upto
A)
Limit of light
B)
Limit of wind
C)
Limit of moisture
D)
None of the above
·
32) If half of the leaves of a plant are removed, the rate of
photosynthesis would be
A)
More and the photosynthetic yield is also more
B)
More but the photosynthetic yield is less
C)
Less and the photosynthetic yield is also less
D)
Less but the photosynthetic yield is more
·
33) What effect would occur on photosynthesis, if the amount of
oxygen in the atmosphere decreases [RPMT 1997]
A)
Increase in
C3
cycle and decrease in
C4
cycle
B)
Increase in
C4
cycle and decrease in
C3
cycle
C)
Increase in
C3
cycle and no change in
C4
cycle
D)
Increase in
C4
cycle and no change in
C3
cycle
·
34) Which is the evidence to show that
O2
is released in photosynthesis comes from water [CPMT 1988]
A) Isotopic
O2
supplied as
H2O
appears in the
O2
released in photosynthesis
B) Isolated
chloroplast in water releases
O2
if supplied potassium ferrocyanide or some other reducing
agent
C) Photosynthetic
bacteria use
H2S
and
CO2
to make carbohydrates
D) All the above
·
35) The first product of
CO2
fixation in Hatch and Slack
(C4)
cycle in plants is [CPMT 1983; KCET (Med.) 2001]
A) Formation of
oxaloacetate by carboxylation of phosphoenol pyruvate (PEP) in bundle sheath
cells
B) Formation of
phosphoglyceric acid in mesophyll cells
C) Formation of bundle
sheath cells
D) Formation of oxaloacetate
by carboxylation of phosphoenol pyruvate (PEP) in the mesophyll cells
Comments
Post a Comment