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NEET Photosynthesis in Higher Plants PYQs with Solutions

576 previous year questions from Photosynthesis in Higher Plants (NEET UG Botany) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

576 questionsBotany2002–2026Answers + solutions

About Photosynthesis in Higher Plants PYQs

Photosynthesis in Higher Plants has 576 previous year questions in the Quantrex Academy NEET UG Botany bank. The 220 questions in this list come from NEET (189) and JIPMER (31), spanning 2002 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

Questions by year (this list)

  • 2026: 8
  • 2025: 2
  • 2024: 6
  • 2023: 7
  • 2022: 5
  • 2021: 2
  • 2020: 4
  • 2019: 4
  • 2018: 4
  • 2017: 5
  • 2016: 4
  • 2015: 2

Photosynthesis in Higher Plants questions with solutions

1

How many turns of Calvin cycle are required for the formation of three molecules of glucose ?

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2

Photorespiration reaction catalyzed by RuBisCo is shown below : RuBP + O _2 arrow 3-Phosphoglycerate + X Identify “X” from the given options :

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3

Which of the following statements regarding photorespiration are correct ? (a) Do not occur in C3 plants (b) CO _2 is consumed and O _2 is generated (c) Phosphoglycolate is formed

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4

Which pigment has absorption peak at 700 nm in the photosynthetic reaction centre PS I (P700) ?

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5

How many ATP and NADPH molecules are required to make one molecule of glucose through the Calvin pathway ?

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6

Find the incorrect statement(s) about photosynthesis from the following : A. The water splitting complex is associated with PS I. B. C_4 plants use the C_3 pathway of CO_2

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7

The enzyme required for carboxylation in the Calvin cycle is :

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8

Select the correct sequence of experiments that led to a gradual understanding of photosynthesis in green plants.

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9

Match List I with List II: List - I List - II A. Chlorophyll a (i) Yellow-green B. Chlorophyll b (ii) Yellow C. Xanthophylls (iii) Blue-green D. Carotenoids (iv) Yellow to

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10

Which of the following statements about RuBisCO is true?

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11

Which of the following are required for the light reaction of Photosynthesis? A. CO_2 B. O_2 C. H_2 O D. Chlorophyll E. Light Choose the correct answer from the options given

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12

Which of the following are required for the dark reaction of photosynthesis? A. Light B. Chlorophyll C. CO_2 D. ATP E. NADPH Choose the correct answer from the options given below:

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13

Given below are two statements: Statement I: In C_3 plants, some O_2 binds to RuBisCO, hence CO_2 fixation is decreased. Statement II: In C_4 plants, mesophyll cells show very

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14

How many molecules of ATP and NADPH are required for every molecule of CO_2 fixed in the Calvin cycle?

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15

Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option.

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16

Which one of the following products diffuses out of the chloroplast during photosynthesis?

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17

Given below are two statements : Statement I : RuBisCO is the most abundant enzyme in the world. Statement II : Photorespiration does not occur in C_4 plants. In the light of the

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18

Match List-I with List-II Choose the correct answer from the options given below :

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19

How many times decarboxylation occurs during each TCA cycle?

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20

Which out of the following statements is incorrect?

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21

How many ATP and NADPH 2 , are required for the synthesis of one molecule of Glucose during Calvin cycle?

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22

The reaction centre in PS II has an absorption maxima at

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23

Which of the following combinations is required for chemiosmosis?

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24

When one CO_2 molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates are used in the reduction

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25

Identify the correct statements regarding chemiosmotic hypothesis : (a) Splitting of the water molecule takes place on the inner side of the membrane. (b) Protons accumulate

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26

Given below are two statements: Statement I: The primary CO _ 2 acceptor in C _ 4 plants is phosphoenolpyruvate and is found in the mesophyll cells. Statement II : Mesophyll cells

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27

Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves :

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28

What is the role of large bundle shealth cells found around the vascular bundles in C _ 4 plants?

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29

Which of the following statements is incorrect?

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30

The first stable product of CO _ 2 fixation in Sorghum is:

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31

During non-cyclic photophosphorylation, when electrons are lost from the reaction centre at PSII , what is the source which replaces these electrons?

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32

Which of the following statements is incorrect?

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33

The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of

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34

In light reaction, plastoquinone facilitates the transfer of electrons from

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35

Kranz anatomy is found in

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36

Chl -b differs from chl -a by

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37

In Hatch and Slack pathway, the primary CO_2 acceptor is

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38

One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in

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39

Which of these is incorrect for C_4 -plants?

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40

Molecular formula of chlorophyll-b is

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41

Conditions required for cyclic photophosphorylation are

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42

Which of the following is not a product of a light reaction of photosynthesis?

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43

A plant is provided with ideal conditions for photosynthesis and supplied with isotope 14 CO_2 . When the products of the process are analysed carefully, what would be the nature

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44

Herbicide that blocks electron transport from PS-II to PS-I by inhibiting electron flow between plastoquinone arrow cytochrome is

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45

Fixation of one CO_2 molecule through Calvin cycle requires.

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46

Phosphoenolpyruvate (PEP) is the primary C O _ 2 acceptor in:

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47

With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

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48

Which one of the following elements is activator for both ribulose bisphosphate, carboxylase oxygenase and phosphoenol pyruvate carboxylase in photosynthetic carbon fixation?

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49

The process which makes a major difference between C _ 3 and C _ 4 plants is:

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50

Emerson's enhancement effect and red drop have been instrumental in the discovery of:

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51

A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of

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52

Which of the following characteristics out of I, II and III are exhibited by C_4 plants? I. Kranz anatomy. II. The product of photosynthesis is oxalo acetic acid. III. Both PEP

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53

In photosynthesis, the light-independent reactions take place in

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54

Which of the following characteristics is are exhibited by C_4 -plants? I. Kranz anatomy. II. The first product of photosynthesis is oxaloacetic acid. III. Both PEP carboxylates

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55

In photosynthesis carbon dioxide is converted to carbohydrates. It is a _______ process.

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56

Bundle sheath cells:

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57

Quantasome are present in

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58

Which of the following cell organelles is associated with photorespiration?

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59

A process that makes important difference between C_3 and C_4 plants is

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60

The correct sequence of cell organelles during photorespiration is

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61

Kranz anatomy can be obseved in leaves of

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62

In leaves of C_4 plants malic acid synthesis during CO_2 fixation occurs in

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63

Light reaction in stroma lamellae of the chloroplast results in the formation of

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64

In Kranz anatomy, the bundle sheath cells have

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65

C_4 -plants are more efficient in photosynthesis than C_3 -plants due to

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66

Read the following four statements, A, B, C and D and select the right OPTION having both correct statements. A. Z secheme of light reaction takes place in presence of PS-I only.

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67

Kranz anatomy is one of the characteristics of the leaves of

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68

Stroma in the chloroplasts of higher plants contains

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69

Stroma in the chloroplast of higher plant contains :

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70

Oxygenic photosynthesis occurs in :

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71

Aqueous and vitreous humour are divided by

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72

In CAM plants, CO_2 acceptor is

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73

In sea anemone, the symmetry is

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74

The C_4 -plants are photosynthetically more efficient than C_3 -plants because

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75

Electrons from excited chlorophyll molecule of photosystem-II are accepted first by

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76

The C_4 plants are phoptosynthetically more efficient than C_3 plants because

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77

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because

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78

In leaves of C_4 plants malic acid synthesis during CO_2 fixation occurs in

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79

Electrons from excited chlorophyll molecule of photosystem II are accepted first by

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80

In leaves of C_4 -plants malic acid synthesis during CO_2 -fixation occurs in

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81

Photosynthesis in C_4 plants is relatively less limited by atmospheric CO_2 levels because

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82

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on

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83

Photosynthetic Active Radiation (PAR) has the following range of wavelengths

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84

The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is:

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85

In the leaves of C_4 plants, malic acid formation during CO_2 fixation occurs in the cells of:

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86

The wavelength of light absorbed by P_r form of phytochrome:

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87

The law of limiting factors for photosynthesis was enunciated by :

JIPMER 2006 Solution
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88

The light phase of photosynthesis is called :

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89

The plant Cuscuta shows maximum photosynthesis in :

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90

Which of the following statements regarding mitochondrial membrane is not correct ?

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91

In photosystem-I, the first electron acceptor is:

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92

During photorespiration, the oxygen consuming reaction (s) occur in:

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93

In photosythesis action and absorption spectrum were related by

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94

Energy transfer in photosynthesis occurs as

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95

In photosynthesis what occurs in PS-II?

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96

In Hatch and Slack pathway

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97

Photosynthesis in C_4 plants is relatively less limited by atmospheric CO_2 levels because:

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98

Photosynthetic active radiation (PAR) has the following range of wavelengths:

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99

As compared to a C_3 -plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C_4 -plants?

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100

In Hatch and Slack type plants CO_2 acceptor is

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101

In C_3 plants, the first stable product of photosynthesis during the dark reaction is:

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102

In chloroplasts, chlorophyll is present in the:

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103

Photosynthetically active radiation (PAR) represents the following range of wavelength:

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104

Plants adapted to low light intensity have:

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105

Which one of the following concerns photophosphorylation?

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106

Stomata of a plant open due to:

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107

In sugarcane plant ^ 14 CO_2 is fixed in malic acid, in which the enzyme that fixes CO_2 is:

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108

Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?

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109

Which pigment absorbs the red and far-red light?

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110

Which of the following absorb light energy for photosynthesis?

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111

In photosynthesis, energy from light reaction to dark reaction is transferred in the form of:

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112

On what do all animals, including human beings, depend for their food?

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113

What are green plants called due to their ability to make their own food?

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114

What process do green plants carry out to synthesize food?

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115

What is the ultimate source of energy for all living forms on earth?

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116

What is the basis of life on earth?

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117

What else is photosynthesis responsible for besides being the primary source of food?

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118

What drives the synthesis of organic compounds in green plants?

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119

What does autotrophic nutrition involve?

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120

What transformation is involved in photosynthesis?

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