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A Brief Description About Photosynthesis In Higher Plants NEET Questions PDF
| Topic: | Photosynthesis In Higher Plants NEET Questions |
| Examinations: | NEET, AIIMS, JIPMER |
| Class: | 11 (CBSE/NCERT) Biology |
| No of Questions: | 100+ |
| Question type: | Multiple Choice Question |
| Question Format: | Text & PDF |
| PDF Size: | 1 MB |
| Download PDF: | Attached Below |
Photosynthesis In Higher Plants NEET Questions
1. The first action spectrum based on photosynthesis was given by ______
a) Jan Ingenhousz
b) Joseph Mathew
c) Cornelius Van Neil
d) T. W. Engelmann
Answer: d
2. Joseph Priestley did his experiments with which organism?
a) Chlorella
b) Mint plant
c) Green sulfur bacteria
d) Cladophora
Answer: b
3. Which of the following is the correct equation of photosynthesis?
a) 6CO2 + 12H2O → C6H12O6 + 6H2O + 6O2
b) 12H2O → C6H12O6 + 6H2O + 6O2
c) 6CO2 + 6O2 → C6H12O6 + 12H2O
d) 6CO2 → C6H12O6 + 6H2O + 6O2
Answer: a
4. The method by which leaf pigments of any green plants can be separated is called as _____
a) condensation
b) centrifugation
c) paper chromatography
d) distillation
Answer: c
5. During which year, Joseph Priestley discovered O2?
a) 1774
b) 1770
c) 1884
d) 1880
Answer: a
6. Photosynthesis is the basis of life on earth because ______
a) It is the main source of all food on earth
b) It helps in the release of CO2 into the atmosphere
c) It produces new offsprings
d) It gives no energy to plants
Answer: a
7. Other than CO2 and light, which is used as the raw material for photosynthesis?
a) O2
b) CO2
c) H2O
d) MnO2
Answer: c
8. Among the following, which compound does not play an important role in photosynthesis?
a) Xanthophyll
b) Anthocyanin
c) Chlorophyll
d) Phycoerythrin
Answer: b
9. What do we call the organism that does photosynthesis but does not release oxygen?
a) Green sulfur bacterium
b) Blue-green algae
c) Green algae
d) Green plants
Answer: a
10. Who found out that oxygen evolved from water in photosynthesis?
a) T. W. Engelmann
b) C. Van Neil
c) R. Hill
d) Ruben and Kamen
Answer: c
11. What were the isotopes used, to research about photosynthesis?
a) 11C and 32P
b) 15C and 35Cl
c) 13C and 14N
d) 14C and 18O
Answer: d
12. Why is light energy used in photosynthesis?
a) Reduction of H2O
b) Reduction of CO2
c) Activation of chlorophyll
d) Oxidation of C6H12O6
Answer: c
13. During photosynthesis, which light is least effective?
a) Greenlight
b) Sunlight
c) Yellow light
d) Blue light
Answer: a
14. Where does the photosynthesis actually take place?
a) Leaves
b) Chloroplast
c) Flowers
d) Root
Answer: b
15. Where does photosynthesis take place in C3 plants?
a) C3 station
b) Arthroplasty
c) Mesosomes
d) Mesophyll cells
Answer: d
16. Chloroplasts are also known as _____________
a) Photosynthetic factories
b) Food makers
c) Color factories
d) Lifer giver
Answer: a
17. Which part of chloroplast contains all the water-soluble enzymes?
a) Lamella
b) Stroma
c) Matrix
d) Chlorophyll
Answer: c
18. The stroma contains a number of _____ made up of disc-like ______
a) grana, thylakoids
b) grana, stroma
c) thylakoids, grana
d) stroma, grana
Answer: a
19. Which is the site of dark reaction?
a) Matrix
b) Stroma
c) Cytochrome
d) Roots
Answer: b
20. Who synthesizes the enzymes required for photosynthesis?
a) Sunlight
b) Matrix
c) Grana
d) DNA and RNA of chloroplast
Answer: d
21. Which among the following enzymes are present in the chloroplast?
a) RuBP
b) Ribulose-2
c) Maltase
d) Lipase
Answer: a
22. Which is the very slow-acting enzyme in chloroplast?
a) ATPase
b) Ribulose-1
c) RUBISCO
d) Carboxylase
Answer: c
23. Which of the following is not an accessory pigment?
a) Chlorophyll a
b) Bacteriochlorophyll
c) Chlorophyll b
d) Phycobilin
Answer: a
24. Which is the correct color matching in chromatogram?
a) Chlorophyll a – yellow-green
b) Chlorophyll b – yellow-orange
c) Xanthophyll – yellow
d) Carotenoids – bright or blue-green
Answer: c
25. Which of the following is the main function of carotenes?
a) Not an accessory pigment
b) Photooxidation
c) Helps in photosynthesis
d) Helps in transpiration
Answer: b
26. Methyl group is mainly present in which photosynthetic pigment?
a) Chlorophyll b
b) Xanthophyll
c) Carotenoids
d) Chlorophyll a
Answer: d
27. Who found out that the pigment chlorophyll is found in the chloroplast in plant cells?
a) Robert Hill
b) Hugo de Vries
c) Julius Von Sachs
d) C. Van Neil
Answer: c
28. How many numbers of chlorophyll are present in a photosynthetic unit?
a) 100 – 150
b) 90
c) 200 – 250
d) 300 – 350
Answer: c
29. Which is false regarding chlorophyll a and b?
a) Chlorophyll b is an accessory pigment
b) Chlorophyll is the main chief pigment
c) Chlorophyll a is more than chlorophyll b
d) Both are present in equal proportion
Answer: d
30. The reaction center in the light-harvesting complex is formed by _____
a) Chlorophyll b
b) Grana
c) Chlorophyll e
d) A single chlorophyll a molecule
Answer: d
31. Which of the following is not related to the light reaction?
a) Also called Photochemical phase
b) Light absorption
c) Electron transport
d) Water splitting
Answer: c
32. How many light-harvesting systems are there in light reaction?
a) Two
b) One
c) Three
d) Four
Answer: a
33. Which pigment is absent in each photosystem?
a) One molecule of chlorophyll a
b) Two molecules of chlorophyll b
c) One molecule of chlorophyll b
d) One molecule of xanthophyll
Answer: a
34. PS I is the photosystem present only in _______ photosynthesis.
a) Amoeba
b) Bacterial
c) Fungal
d) Plant
Answer: b
35. Which among the following are raw materials required for the light reaction?
a) NADPH2 and H2O
b) ADP and OH2
c) ATP only
d) ADP, H2O, and NADP
Answer: d
36. ______ discovered the two-pigment system theory of light reaction?
a) Emerson
b) Hill
c) Arnon
d) Mathew
Answer: a
37. Which of the following is most sensitive to higher wavelengths of sunlight?
a) Photolysis
b) Chlorophyll
c) PS I
d) PS II
Answer: c
38. The process in which green plants synthesize organic food by utilizing carbon dioxide and water as raw materials, in the presence of sunlight is called as ______
a) Respiration
b) Food synthesis
c) Photosynthesis
d) Light synthesis
Answer: c
39. Which is correct regarding photosynthesis?
a) Carbon dioxide is obtained from the atmosphere
b) Water is absorbed from the soil through the stem system
c) Sunlight is trapped by pigments called xanthophyll
d) Chlorophyll absorbs green light
Answer: a
40. The half leaf experiment showed that _____ is important for photosynthesis.
a) O2
b) CO2
c) Sunlight
d) Chlorophyll
Answer: b
41. A compound was used in the half leaf experiment to absorb CO2. This compound is ______
a) KMNO4
b) HCl
c) NaOH
d) KOH
Answer: d
42. Which scientist showed that only the green part of the plants will release oxygen?
a) Jan Ingenhousz
b) Joseph Priestly
c) C. Van Neil
d) T. W. Engelmann
Answer: a
43. Who found the presence and properties of glucose in green plants?
a) T. W. Engelmann
b) C. Van Neil
c) Julius Von Sachs
d) Jan Ingenhousz
Answer: c
44. How many electrons and protons are produced during the photolysis of water?
a) 4 electrons and 3 protons
b) 1 electron and 2 protons
c) 3 electrons and protons
d) 4 electrons and 4 protons
Answer: d
45. The electron transport system occurs in _____
a) Thylakoid membrane
b) Stroma
c) Cytosol
d) Mitochondria
Answer: a
46. The first electron acceptor in photosystem 1 is _____
a) Plastoquinone
b) Cytochrome b
c) A Fe-S protein
d) Water
Answer: c
47. How much hydrogen protons are released by twelve water molecules?
a) 48
b) 6
c) 12
d) 24
Answer: d
48. The name of the scheme given to the transport of electrons is called as _______
a) Z scheme
b) W scheme
c) Y scheme
d) E scheme
Answer: a
49. _____ is the only product in cyclic photophosphorylation.
a) ADP
b) ATP
c) Hydrogen
d) Oxygen
Answer: b
50. In PS II, the last electron acceptor is ______
a) Plastocyanin
b) Ferredoxin
c) Cytochrome b6
d) Cytochrome b12
Answer: a
51. _______ accepts the electrons from Pheophytin.
a) Cytochrome f
b) Cytochrome d
c) Plastoquinone
d) Ferredoxin
Answer: c
52. The electrons produced in the photolysis of water enters ______
a) Fe-S protein
b) PS II
c) Plastocyanin
d) Cytochrome a
Answer: b
53. The process by which the pH gradient across the membrane provides energy for the synthesis of ATP is called as ______
a) Phosphorylation
b) Transfusion
c) Diffusion
d) Chemiosmosis
Answer: d
54. In which process does carbon dioxide join photosynthesis?
a) Oxidation
b) PS I
c) Dark reaction
d) Reduction
Answer: c
55. Which of these is not a product of light reaction?
a) Oxygen
b) NADPH
c) ATP
d) NADP
Answer: d
56. Which of these diffuse out of the chloroplast after the light reaction?
a) ATP
b) Carbon dioxide
c) Oxygen
d) NADPH
Answer: c
57. Which of these statements is incorrect regarding the biosynthetic phase of photosynthesis?
a) It depends on carbon dioxide and water
b) It depends on the products of light reaction
c) ATP and NADH are used
d) Sugars are synthesized
Answer: c
58. Which of these scientists have contributed to photosynthesis studies?
a) Melvin Calvin
b) Hargovind Khorana
c) Gregor Mendel
d) Anthony Van Leeuwenhoek
Answer: a
59. Which of these was used by Melvin Calvin for photosynthesis studies?
a) P-35
b) Radioactive C-14
c) C-13
d) Radioactive S-32
Answer: b
60. Who discovered the first CO2 fixation product?
a) Anthony Van Leeuwenhoek
b) Robert Hooke
c) Melvin Calvin
d) Gregor Mendel
Answer: c
61. Which of these is a 3-carbon organic acid?
a) PGA
b) BTCA
c) Citric acid
d) Acetic acid
Answer: a
62. What is the full form of PGA?
a) 2-phosphoglyceric acid
b) 2-phosphoglutamic acid
c) 3-phosphoglutamic acid
d) 3-phosphoglyceric acid
Answer: d
63. How many carbon atoms does OAA contain?
a) 3
b) 2
c) 4
d) 1
Answer: c
64. Which is the first product of CO2 fixation in the C3 pathway?
a) NADPH
b) OAA
c) ATP
d) PGA
Answer: d
65. Which is the first product of CO2 fixation in the C4 pathway?
a) NADPH
b) PGA
c) OAA
d) ATP
Answer: c
66. What is the primary acceptor of CO2 in photosynthesis?
a) ATP
b) PGA
c) RuBP
d) OAA
Answer: c
67. Which of these compounds have 5 carbon atoms?
a) RuBP
b) OAA
c) PGA
d) ATP
Answer: a
68. How many carbon atoms does the primary acceptor of CO2 in photosynthesis have?
a) 4
b) 5
c) 3
d) 2
Answer: b
69. Which of these is not a stage of the Calvin cycle?
a) Carboxylation
b) Reduction
c) Regeneration
d) Oxidation
Answer: d
70. Which is the most crucial step of the Calvin cycle?
a) Oxidation
b) Reduction
c) Carboxylation
d) Regeneration
Answer: c
71. Which of these undergoes carboxylation during Calvin cycle?
a) NADPH
b) ATP
c) RuBP
d) PGA
Answer: c
72. Which of these substances catalyse carboxylation?
a) RuBP carboxylase
b) Pyruvate carboxylase
c) Propionyl-CoA carboxylase
d) Acetyl-CoA carboxylase
Answer: a
73. What is the product of carboxylation?
a) 2-PGA
b) 3-PGA
c) RuBP
d) Rubisco
Answer: b
74. How many molecules of PGA are produced on carboxylation?
a) 3
b) 1
c) 2
d) 4
Answer: c
75. Which of these statements is false about reduction in the Calvin cycle?
a) It is the third step of the cycle
b) It leads to the formation of glucose
c) It utilizes NADPH for reduction
d) It utilizes ATP for phosphorylation
Answer: a
76. How many turns of the Calvin cycle are required for the formation of 3 glucose molecules?
a) 15
b) 16
c) 12
d) 18
Answer: d
77. Which of these molecules is regenerated during the Calvin cycle?
a) NADPH
b) ATP
c) RuBP
d) CO2
Answer: c
78. How many molecules of NADPH are required for each Calvin cycle?
a) 3
b) 1
c) 4
d) 2
Answer: d
79. How many molecules of ATP are required for each Calvin cycle?
a) 1
b) 2
c) 3
d) 4
Answer: c
80. How many molecules of NADP are produced as a result of six Calvin cycles?
a) 9
b) 18
c) 12
d) 24
Answer: c
81. How many molecules of ADP are produced as a result of six Calvin cycles?
a) 18
b) 24
c) 12
d) 32
Answer: a
82. How many molecules of carbon dioxide are required in the Calvin cycle to produce 3 molecules of glucose?
a) 9
b) 18
c) 6
d) 15
Answer: b
83. Which of these is not a characteristic of C4 plants?
a) Toleration of higher temperatures
b) Response to high light intensities
c) Greater productivity of biomass
d) Photorespiration
Answer: d
84. What is the special leaf anatomy in C4 plants known as?
a) Mesophyll anatomy
b) Vascular anatomy
c) Kranz anatomy
d) Calvin anatomy
Answer: c
85. What is the arrangement of cells in plants showing Kranz anatomy?
a) Tapered
b) Irregular
c) Wreath
d) Triangular
Answer: c
86. Which of the following is false regarding the bundle sheaths of plants showing Kranz anatomy?
a) They lack chloroplasts
b) They are layered around the vascular bundles
c) They have thick walls
d) They lack intercellular spaces
Answer: a
87. Which of these is a C4 plant?
a) Wheat
b) Maize
c) Rice
d) Cotton
Answer: b
88. Which of these features cannot help us differentiate between C3 and C4 plants?
a) Presence of Kranz anatomy
b) Presence of photorespiration
c) Presence of chloroplasts
d) Presence of bundle sheath
Answer: c
89. Which of these is the primary carbon dioxide acceptor in the Hatch and Slack pathway?
a) PEP
b) PGA
c) OAA
d) PEPcase
Answer: a
90. Which of these are not present in mesophyll cells?
a) OAA
b) PEP carboxylase
c) PEPcase
d) RuBisCO
Answer: d
91. Which of these is the C4 acid?
a) PEP
b) PGA
c) OAA
d) RuBisCO
Answer: c
92. Which of these is not a 4-carbon compound?
a) Aspartic acid
b) OAA
c) Malic acid
d) PGA
Answer: d
93. Which enzyme is a major component of the bundle sheath cells?
a) PEPcase
b) PEP
c) RuBisCO
d) PEP carboxylase
Answer: c
94. Which of these is common to C3 and C4 plants?
a) OAA
b) PGA
c) Calvin cycle
d) Photorespiration
Answer: c
95. In which of these cells does the Calvin pathway occur in C3 plants?
a) Mesophyll cells
b) Bundle sheath cells
c) Epidermal cells
d) Sieve cells
Answer: a
96. In which of these cells does the Calvin pathway occur in C4 plants?
a) Mesophyll cells
b) Bundle sheath cells
c) Epidermal cells
d) Sieve cells
Answer: b
97. Which of these cannot help us differentiate between C3 and C4 plants?
a) Carbon dioxide acceptor molecule
b) Presence of Kranz anatomy
c) Photorespiration
d) Number of chloroplasts
Answer: d
98. What is the first step of the Calvin pathway?
a) Regeneration
b) Reduction
c) CO2 fixation
d) Synthesis of sugar
Answer: c
99. Which of these take place in the first step of the Calvin pathway?
a) 3 molecules of 2PGA are formed
b) RuBisCO combines with CO2
c) RuBP and CO2 give PGA
d) RuBP acts as a catalyst
Answer: c
100. Which of these is true regarding carbon dioxide fixation?
a) RuBP and CO2 give PGA
b) RuBisCO combines with CO2
c) 3 molecules of 2PGA are formed
d) RuBP acts as a catalyst
Answer: a
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