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Photosynthesis in Higher Plants — NEET UG Botany PYQs

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

576 questionsBotanySolutions on every page
1

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

NEET 2026 Solution View → 2

Photorespiration reaction catalyzed by RuBisCo is shown below : RuBP +O₂ 3-Phosphoglycerate + X Identify “X” from the given options :

NEET 2026 Solution View → 3

Which of the following statements regarding photorespiration are correct ? (a) Do not occur in C3 plants (b) CO₂ is consumed and O₂ is generated (c) Phosphoglycolate is formed (d)

NEET 2026 Solution View → 4

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

NEET 2026 Solution View → 5

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

NEET 2026 Solution View → 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 fixation

NEET 2026 Solution View → 7

The enzyme required for carboxylation in the Calvin cycle is :

NEET 2026 Solution View → 8

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

NEET 2026 Solution View → 9

Match List I with List II: array |l|l|l|l| & List - I & & List - II A . & Chlorophyll a & (i) & Yellow-green B. & Chlorophyll b & (ii) & Yellow C. & Xanthophylls & (iii) & Blue-gre

NEET 2025 Solution View → 10

Which of the following statements about RuBisCO is true?

NEET 2025 Solution View → 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 below

NEET 2024 Solution View → 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:

NEET 2024 Solution View → 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 litt

NEET 2024 Solution View → 14

How many molecules of ATP and NADPH are required for every molecule of CO ₂ fixed in the Calvin cycle?

NEET 2024 Solution View → 15

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

NEET 2024 Solution View → 16

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

NEET 2024 Solution View → 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 a

NEET 2023 Solution View → 18

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

NEET 2023 Solution View → 19

How many times decarboxylation occurs during each TCA cycle?

NEET 2023 Solution View → 20

Which out of the following statements is incorrect?

NEET 2023 Solution View → 21

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

NEET 2023 Solution View → 22

The reaction centre in PS II has an absorption maxima at

NEET 2023 Solution View → 23

Which of the following combinations is required for chemiosmosis?

NEET 2023 Solution View → 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 phase

NEET 2022 Solution View → 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 within

NEET 2022 Solution View → 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 of C

NEET 2022 Solution View → 27

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

NEET 2022 Solution View → 28

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

NEET 2022 Solution View → 29

Which of the following statements is incorrect?

NEET 2021 Solution View → 30

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

NEET 2021 Solution View → 31

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

NEET 2020 Solution View → 32

Which of the following statements is incorrect?

NEET 2020 Solution View → 33

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

NEET 2020 Solution View → 34

In light reaction, plastoquinone facilitates the transfer of electrons from

NEET 2020 Solution View → 35

Kranz anatomy is found in

JIPMER 2019 Solution View → 36

Chl -b differs from chl -a by

JIPMER 2019 Solution View → 37

In Hatch and Slack pathway, the primary CO ₂ acceptor is

NEET 2019 Solution View → 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 the

NEET 2019 Solution View → 39

Which of these is incorrect for C ₄ -plants?

JIPMER 2018 Solution View → 40

Molecular formula of chlorophyll-b is

JIPMER 2018 Solution View → 41

Conditions required for cyclic photophosphorylation are

JIPMER 2018 Solution View → 42

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

NEET 2018 Solution View → 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 o

JIPMER 2017 Solution View → 44

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

JIPMER 2017 Solution View → 45

Fixation of one CO ₂ molecule through Calvin cycle requires.

JIPMER 2017 Solution View → 46

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

NEET 2017 Solution View → 47

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

NEET 2017 Solution View → 48

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

JIPMER 2016 Solution View → 49

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

NEET 2016 Solution View → 50

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

NEET 2016 Solution View → 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 nit

NEET 2016 Solution View → 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 car

JIPMER 2015 Solution View → 53

In photosynthesis, the light-independent reactions take place in

NEET 2015 Solution View → 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 an

JIPMER 2013 Solution View → 55

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

JIPMER 2013 Solution View → 56

Bundle sheath cells:

NEET 2013 Solution View → 57

Quantasome are present in

JIPMER 2012 Solution View → 58

Which of the following cell organelles is associated with photorespiration?

JIPMER 2012 Solution View → 59

A process that makes important difference between C ₃ and C ₄ plants is

NEET 2012 Solution View → 60

The correct sequence of cell organelles during photorespiration is

NEET 2012 Solution View → 61

Kranz anatomy can be obseved in leaves of

JIPMER 2011 Solution View → 62

In leaves of C ₄ plants malic acid synthesis during CO ₂ fixation occurs in

JIPMER 2011 Solution View → 63

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

JIPMER 2011 Solution View → 64

In Kranz anatomy, the bundle sheath cells have

NEET 2011 Solution View → 65

C ₄ -plants are more efficient in photosynthesis than C ₃ -plants due to

NEET 2010 Solution View → 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. B

NEET 2010 Solution View → 67

Kranz anatomy is one of the characteristics of the leaves of

NEET 2010 Solution View → 68

Stroma in the chloroplasts of higher plants contains

NEET 2009 Solution View → 69

Stroma in the chloroplast of higher plant contains :

NEET 2009 Solution View → 70

Oxygenic photosynthesis occurs in :

NEET 2009 Solution View → 71

Aqueous and vitreous humour are divided by

JIPMER 2008 Solution View → 72

In CAM plants, CO ₂ acceptor is

JIPMER 2008 Solution View → 73

In sea anemone, the symmetry is

JIPMER 2008 Solution View → 74

The C ₄ -plants are photosynthetically more efficient than C ₃ -plants because

NEET 2008 Solution View → 75

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

NEET 2008 Solution View → 76

The C ₄ plants are phoptosynthetically more efficient than C ₃ plants because

NEET 2008 Solution View → 77

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

NEET 2008 Solution View → 78

In leaves of C ₄ plants malic acid synthesis during CO ₂ fixation occurs in

NEET 2008 Solution View → 79

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

NEET 2008 Solution View → 80

In leaves of C ₄ -plants malic acid synthesis during CO ₂ -fixation occurs in

NEET 2008 Solution View → 81

Photosynthesis in C ₄ plants is relatively less limited by atmospheric CO ₂ levels because

JIPMER 2007 Solution View → 82

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

JIPMER 2007 Solution View → 83

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

JIPMER 2007 Solution View → 84

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

NEET 2007 Solution View → 85

In the leaves of C ₄ plants, malic acid formation during CO ₂ fixation occurs in the cells of:

NEET 2007 Solution View → 86

The wavelength of light absorbed by P _r form of phytochrome:

NEET 2007 Solution View → 87

The law of limiting factors for photosynthesis was enunciated by :

JIPMER 2006 Solution View → 88

The light phase of photosynthesis is called :

JIPMER 2006 Solution View → 89

The plant Cuscuta shows maximum photosynthesis in :

JIPMER 2006 Solution View → 90

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

NEET 2006 Solution View → 91

In photosystem-I, the first electron acceptor is:

NEET 2006 Solution View → 92

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

NEET 2006 Solution View → 93

In photosythesis action and absorption spectrum were related by

JIPMER 2005 Solution View → 94

Energy transfer in photosynthesis occurs as

JIPMER 2005 Solution View → 95

In photosynthesis what occurs in PS-II?

JIPMER 2005 Solution View → 96

In Hatch and Slack pathway

JIPMER 2005 Solution View → 97

Photosynthesis in C ₄ plants is relatively less limited by atmospheric CO ₂ levels because:

NEET 2005 Solution View → 98

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

NEET 2005 Solution View → 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?

NEET 2005 Solution View → 100

In Hatch and Slack type plants CO ₂ acceptor is

JIPMER 2004 Solution View → 101

In C ₃ plants, the first stable product of photosynthesis during the dark reaction is:

NEET 2004 Solution View → 102

In chloroplasts, chlorophyll is present in the:

NEET 2004 Solution View → 103

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

NEET 2004 Solution View → 104

Plants adapted to low light intensity have:

NEET 2004 Solution View → 105

Which one of the following concerns photophosphorylation?

NEET 2003 Solution View → 106

Stomata of a plant open due to:

NEET 2003 Solution View → 107

In sugarcane plant ¹⁴ CO ₂ is fixed in malic acid, in which the enzyme that fixes CO ₂ is:

NEET 2003 Solution View → 108

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

NEET 2003 Solution View → 109

Which pigment absorbs the red and far-red light?

NEET 2002 Solution View → 110

Which of the following absorb light energy for photosynthesis?

NEET 2002 Solution View → 111

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

NEET 2002 Solution View → 112

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

NEET Solution View → 113

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

NEET Solution View → 114

What process do green plants carry out to synthesize food?

NEET Solution View → 115

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

NEET Solution View → 116

What is the basis of life on earth?

NEET Solution View → 117

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

NEET Solution View → 118

What drives the synthesis of organic compounds in green plants?

NEET Solution View → 119

What does autotrophic nutrition involve?

NEET Solution View → 120

What transformation is involved in photosynthesis?

NEET Solution View →
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