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Free download in PDF Photosynthesis in Higher Plants Objective Type 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)
Photorespiration involves oxidation of
[A]
PGA
[B]
RuBP
[C]
Chlorophyll a
[D]
Both a and b
(2)
C3 and C4 plants differ with respect to
[A]
Number of ATP molecules consumed
[B]
First product
[C]
The substrate which accepts carbon dioxide
[D]
All
(3)
In Calvin cycle, 1 molecule of glucose is formed from
[A]
6CO2 + 30ATP + 12NADPH
[B]
6CO2 + 12ATP
[C]
6CO2 + 18ATP + 12NADPH
[D]
6CO2 + 18ATP + 30NADPH
Answer: 6CO2 + 18ATP + 12NADPH
(4)
Where does the light reaction takes place?
[A]
Grana
[B]
Stroma
[C]
Cytoplasm
[D]
Endoplasmic reticulum
(5)
Electrons from the excited chlorophyll molecules of PS-II are first accepted by
[A]
Pheophytin
[B]
Ferredoxin
[C]
Cytochrome f
[D]
Cytochrome b
(6)
Non-cyclic photophosphorylation results in the production of
[A]
NADH
[B]
NADPH
[C]
ATP
[D]
ATP and NADPH
(7)
DCMU inhibits
[A]
PS-I
[B]
PS-II
[C]
Oxidative phosphorylation
[D]
It destroys chloroplast
(8)
Maximum photosynthesis occurs in
[A]
Blue light
[B]
Red light
[C]
White light
[D]
Green light
(9)
The first acceptor of CO2 in C4 plants is
[A]
Aspartic acid
[B]
Malic acid
[C]
Oxaloacetic acid
[D]
Phosphoenolpyruvate
Answer: Phosphoenolpyruvate
(10)
The first product of C4 pathway is
[A]
PGA
[B]
DHAP
[C]
Oxaloacetate
[D]
Phosphoenolpyruvate
(11)
The two pigment system theory of photosynthesis was proposed by
[A]
Aron
[B]
Blackman
[C]
Hill
[D]
Emerson
(12)
H2 donor during photosynthesis is
[A]
ATP
[B]
NADP
[C]
NADPH
[D]
NADH
(13)
The minerals involved in splitting reaction during photosynthesis is
[A]
Potassium and manganese
[B]
Magnesium and chlorine
[C]
Potassium and chlorine
[D]
Manganese and chlorine
Answer: Manganese and chlorine
(14)
The water-soluble photosynthetic pigment is
[A]
Chlorophyll a
[B]
Xanthophyll
[C]
Anthocyanin
[D]
Chlorophyll b
(15)
What is the first step in photosynthesis:
[A]
Generation of ATP
[B]
Formation of NADPH
[C]
Through light, excitement of an electron of chlorophyll pigment
[D]
Formation of Glucose
Answer: Through light, excitement of an electron of chlorophyll pigment
(16)
Due to which reaction PGA is changed into phosphoglyceraldehyde in photosynthesis process?
[A]
Oxidation
[B]
Reduction
[C]
Electrolysis
[D]
Hydrolysis
(17)
What will be the ratio of oxygen produced to that of consumed in daylight hours when the rate of respiration is less than that of photosynthesis?
[A]
1: 1
[B]
10: 1
[C]
50: 1
[D]
5: 1
(18)
In Photosynthesis process, how many molecules of NADPH and ATP are required to reduce six molecules of carbon dioxide to glucose?
[A]
3 ATP and 2 NADPH
[B]
6 ATP and 6 NADPH
[C]
12 ATP and 18 NADPH
[D]
18 ATP and 12 NADPH
Answer: 18 ATP and 12 NADPH
(19)
Mention the internal factors that influence photosynthesis?
[A]
Size, position and structure of stomata
[B]
Maintenance of the turgidity of the leaf cells
[C]
Relative proportion and distribution of chloroplasts in the mesophyll
[D]
All of the above
(20)
Name the external factors that affect photosynthesis process?
[A]
Light Intensity
[B]
Carbon dioxide concentration
[C]
Temperature
[D]
All of the above
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