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Free download in PDF Photosynthesis in Higher Plants Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
In chlorophyll ‘a’, third carbon of second pyroll ring is attached with
[A]
Carboxyl group
[B]
Magnesium
[C]
Methyl group
[D]
Aldehyde group
(2)
In normal chloroplast, the percentage of chlorophyll is
[A]
50%
[B]
75%
[C]
5-10%
[D]
95%
(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
(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
(7)
Isotopes employed to study photosynthesis are
[A]
11C and 32P
[B]
15C and 32P
[C]
16C and 15O
[D]
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
(9)
Kranz anatomy is typical of
[A]
C4 plants
[B]
C3 plants
[C]
C2 plants
[D]
CAM plants
(10)
Light energy is conveted into chemical energy in the presence of
[A]
Pyrenoids
[B]
Chloroplasts
[C]
Ribosomes
[D]
Mesosomes
(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
(14)
Most effective wavelength of light for photosynthesis is
[A]
green
[B]
Violet
[C]
Red
[D]
Yellow
(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
(18)
Number of calvin cycles required to generate a molecule of hexose is
(19)
One sixth part of the total PGAL produced is used for synthesis of
[A]
Glucose
[B]
RuBP
[C]
air tight
[D]
DHAP
(20)
Oxidative phosphorylation occurs during the process of
[A]
Protein synthesis
[B]
N2 fixation
[C]
Respiration
[D]
Transpiration
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