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Photosynthesis in Higher Plants MCQs | Photosynthesis in Higher Plants Multiple Choice Questions and Answers

Questions
1 In chlorophyll ‘a’, third carbon of second pyroll ring is attached with
A Carboxyl group
B Magnesium
C Methyl group
D Aldehyde group

Answer:Methyl group
2 In normal chloroplast, the percentage of chlorophyll is
A 50%
B 75%
C 5-10%
D 95%

Answer:5-10%
3 In photosynthesis, oxygen is liberated due to
A Reduction of carbon dioxide
B Hydrolysis os carbohydrate
C Photolysis of water
D Breakdown of chlorophyll

Answer: Photolysis of water
4 In pigment system II, active chlorophyll is
A P680
B P700
C P673
D P720

Answer: Hanstein
5 In which of the following the rate of photosynthesis is decreased and is known as red drop
A Blue light
B Green light
C Red light more than 680 nm
D Red light less than 680 nm

Answer: Red light more than 680 nm
6 Intact chloroplast from green leaves cab be isolated by
A Acetone
B Ethanol
C Alcohol
D Sugar solution

Answer:Acetone
7 Isotopes employed to study photosynthesis are
A 11C and 32P
B 15C and 32P
C 16C and 15O
D 14C and 18O

Answer:14C and 18O
8 Isotopes popularly known to have been used in the study of photosynthesis are
A C14 and O18
B C11 and C32
C C16 and N15
D P32 and C15

Answer:C14 and O18
9 Kranz anatomy is typical of
A C4 plants
B C3 plants
C C2 plants
D CAM plants

Answer: C4 plants
10 Light energy is conveted into chemical energy in the presence of
A Pyrenoids
B Chloroplasts
C Ribosomes
D Mesosomes

Answer: Chloroplasts
11 Light is necessary during photosynthesis for
A Evolution of hydrogen
B Photolysis of water
C Heating
D Breakdown of chlorophyll

Answer:Photolysis of water
12 Maize, sugarcane and some other tropical plants have high efficiency of CO2 fixation because they operate
A Calvin cycle
B Hatch – Slack cycle
C TCA cycle
D PP pathway

Answer: Hatch – Slack cycle
13 Make suitable pair
(A) Emerson effect – (a) C4 cycle
(B) Hill reaction – (b) Photolysis
(C) Calvin’s cycle – (c) C3 cycle
(D) Hatch and Slack cycle – (d) Photosystem-I & II
A Aa, Bb, Cc, Dd
B Aa, Bc, Cd Da
C Ac, Bd, Ca, Db
D Ad, Bb, Cc, Da

Answer: Ad, Bb, Cc, Da
14 Most effective wavelength of light for photosynthesis is
A green
B Violet
C Red
D Yellow

Answer: Red
15 NADP is reduced to NADPH in
A PSI
B PSII
C Calvin cycle
D Noncyclic photophosphorylation

Answer: Noncyclic photophosphorylation
16 Nine-tenth of all photosynthesis of world (85-90%) is carried out by
A Large trees with millions of branches and levess
B Algae of the ocean
C Chlorophyll containing ferns of the forest
D Scientist in the laboratories

Answer: Algae of the ocean
17 Nobel prize was awarded to the scientist for discovering the pathway of carbon assimilation
A Watson
B Krebs
C Calvin
D Parnas

Answer: Calvin
18 Number of calvin cycles required to generate a molecule of hexose is
A 2
B 4
C 6
D 8

Answer: 6
19 One sixth part of the total PGAL produced is used for synthesis of
A Glucose
B RuBP
C air tight
D DHAP

Answer: Glucose
20 Oxidative phosphorylation occurs during the process of
A Protein synthesis
B N2 fixation
C Respiration
D Transpiration

Answer: N2 fixation

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