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NEET Biology Chapter Wise Mock Test – Respiration in Plants

NEET Biology Chapter Wise Mock Test – Respiration in Plants

1. Respiration in plants
(a) results in the formation of fats
(b) produces 02 and water
(c) is characteristic feature of all livinguelts
(d) occurs only during night

2. Respiration is regarded as
(a) catabolic process
(b) reduction process
(c) anabolic process
(d) synthetic process

3. Respiration is accompanied by
(a) decrease in weight
(b) increase in weight
(c) weight remains constant
(d) decrease in size

4. Consider the following statements and choose the incorrect options.
I. The mechanism of breakdown of food material within the cell to release energy is called cellular respiration.
II. Respiration causes the breaking of C-C bond of complex compounds through oxidation within the ceils, leading release of energy.
III. The compounds that are oxidised during this process
are known as oxidatory substrate.

(a) Only I (b) Only II
(c) Only III (d) None of these

5. Read the following statements and choose the incorrect statements.
Plants do not have respiratory organs because.
I. Each plant part takes care of its own gas exchange needs.
II. There is very little transport of gases from one plant part to another.
III. Only during photosynthesis large volume of gaseous exchange occurs.

(a) Only I (b) Only II
(c) Only III (d) Only IV

6. Floating respiration is respiration
(a) occurring in cytoplasm
(b) using carbohydrates as substrate
(c) using fats as respiratory substrate
(d) Both (b) and (c)

7. The complete combustion of glucose in respiration is represented by
(a) C6H1206 + 602 —>+6C02 + 6H20+ Energy
(b) C6H1206+ 6C02 —>+ 602+ 6H20 + Energy
(c) C6H1206 + 602 + 6 C02—>+ 6C02 + 6H20+ Energy
(d) C6H1206 + 602 + 6C02 +ATP —> 6C02 + 6H20

8. Respiratory substrate are the organic substance which are during respiration to liberate energy.
(a) oxidised
(b) reduced
(c) Both (a) and (b)
(d) synthesised

9. The released energy obtained by oxidation is stored as
(a) a concentration gradient across a membrane
(b) ADP
(c) ATP
(d) NAD+

10. The intermediate compound common for aerobic and anaerobic respiration is
(a) citric acid
(b) pyruvic acid
(c) acetyl Co-A
(d) succinic acid

11. Incomplete breakdown of sugar in anaerobic respiration forms
(a) glucose and carbon dioxide
(b) alcohol and carbon dioxide
(c) water and carbon dioxide
(d) fructose and water

12. Cyanide resistant pathway is one in which
(a) cyanide breakdown respiratory membrane
(b) electron transfer directly from complex I to IV
(c) electron transfer directly from complex II to oxygen
(d) None of the above

13. The most common example, which can respire in the absence of oxygen is
(a) potato
(b) Hydrilla
(c) yeast
(d) onion

14. The energy releasing metabolic process in which substrate is oxidised without an external acceptor is called
(a) glycolysis
(b) fermentation
(c) aerobic respiration
(d) photorespiration

15. Incomplete breakdown of sugar in anaerobic respiration results in the formation of
(a) fructose and water
(b) glucose and 02
(c) alcohol and C02
(d) water and 02

16. Which one of the following mammalian cells is not capable of metabolising glucose to carbon dioxide aerobically?
(a) White blood cells
(b) Unstriated muscle cells
(c) Liver cells
(d) Red blood cells

17. What will happen if fermentation is allowed to proceed in a closed vessel?
(a) Vacuum will result
(b) No change will be there
(c) Pressure will develop because of excessive C02
(d) Pressure will develop because of excessive 02

18. Dough kept over-night in warm weather becomes soft and spongy because of
(a) absorption of carbon dioxide from atmosphere

(b) fermentation
(c) cohesion
(d) osmosis

19. Choose the correct combination of labelling the molecules involved in the pathway of anaerobic respiration in yeast.
NEET Biology Chapter Wise Mock Test - Respiration in Plants 1
(a) A-Ethanol, B-C02, C-Acetaldehyde
(b) A—C02, B-Ethanol, C-Acetaldehyde
(c) A-Acetaldehyde, B-C02, C-Ethanol
(d) A-Ethanol, B-Acetaldehyde, C- C02

20. Alcoholic fermentation takes place in the presence of
(a) maltase
(b) zymase
(c) amylase
(d) invertase

21. Fermentation is
(a) anaerobic respiration
(b) process which only occurs in in vitro condition
(c) complete oxidation of carbohydrate
(d) None of the above

22. Which of the following statements regarding respiration and breathing is correct?
(a) They are the same
(b) Plant respire, while animals breathe
(c) Higher animals breathe as well as respire
(d) Higher plants respire during the day but breathe at night

23. The common phase between anaerobic and aerobic respiration is called
(a) TCA cycle (b) oxidative phosphorylation

(c) Krebs’ cycle (d) glycolysis

24. The net gain of ATP molecules in glycolysis is
(a) 0 (b) 2
(c) 4 (d) 8

25. Phosphorylation of glucose during glycolysis is catalysed by
(a) phosphoglucomutase
(b) phosphoglucoisomerase
(c) hexokinase
(d) phosphorylase

26. Pyruvic acid, the key product of glycolysis can have many metabolic fates. Under aerobic condition it forms
(a) lactic acid
(b) C02 + H20
(c) acetyl Co – A+ C02
(d) ethanol + C02

27. The number of 02 molecules required for glycolytic breakdown of one glucose molecule is
(a) zero
(b)two
(c) three
(d) four

28. In glycolysis, during oxidation electrons are removed by
(a) ATP
(b) glyceraldehyde-3-phosphate
(c) NAD+
(d) molecular oxygen

29. Which of the following connects the glycolysis and Krebs’ cycle?
(a) Pyruvic acid
(b) Glucose
(c) Acetyl Co-A
(d) ATP

30. Which of the following is synthesised during substrate phosphorylation?
(a) AMP
(b) ATP
(c) NADH
(d) FMN

31. The enzyme, which converts glucose to glucose-6-phosphate is
(a) hexokinase
(b) glucose synthetase
(c) glucose-6-phosphate
(d) None of these

32. Which of the following statements is wrong for glycolysis?
(a) It uses ATP
(b) It produces ATP
(c) End products are C02 and water
(d) NADH is produced

33. Phosphorylation of glucose with the help of ATP and hexokinase produces
(a) glucose-1-phosphate
(b) glucose-6-phosphate
(c) glucose-1,6-diphosphate
(d) fructose-1,6-diphosphate

34. As compared to anaerobic respiration, the energy released during aerobic respiration is
(a) 8 times
(b) 10 times
(c) 18 times
(d) 24 times

35. C02 is released in aerobic respiration in how many steps?
(a) One
(b) Six
(c) Three
(d) Four

36. Group of plants similar to animals in their requirement of 02 for cellular respiration belongs to
(a) fungi
(b) lichens
(c) blue-green algae
(d) red algae

37. Pyruvic acid before combining with oxaloacetic acid of TCA cycle changes into
(a) acetyl Co-A
(b) lactic acid
(c) acetic acid
(d) aconitic acid

38. Removal of hydrogen and C02 from a substrate is called
(a) decarboxylation
(b) oxidation
(c) oxidative decarboxylation
(d) reductive decarboxylation

39. Metabolic water is the one
(a) used during transamination
(b) used during photosynthesis
(c) produced during aerobic utilisation of glucose
(d) produced during condensation or polymerisation

40. Site of Krebs’ cycle in mitochondria is
(a) outer membrane
(b) mitochondrial matrix
(c) oxysomes
(d) None of these

41. All enzymes of TCA cycle are located in the mitochondrial matrix except one, which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes.
This enzymes is
(a) lactate dehydrogenase
(b) isocitrate dehydrogenase
(c) malate dehydrogenase
(d) succinate dehydrogenase

42. Succinate is oxidised to fumarate in Krebs’ cycle by
(a) removal of hydrogen
(b) loss of electrons
(c) addition of oxygen
(d) removal of oxygen

43. A single cycle of TCA cycle yields
(a) 2 FADH2 + 2NADH2 + 2ATP
(b) 1FADH2 + 2NADH2 +1ATP
(c) 1FADH2 + 3NADH2 + 1ATP
(d) 1FADH2 + 1NADH2 + 1ATP

44. Match the following columns.
NEET Biology Chapter Wise Mock Test - Respiration in Plants 2
A B C D A B C D
(a) 2 5 3 1 (b) 3 1 4 2
(c) 5 1 4 2 (d) 5 3 1 2

45. FAD acts as an electron acceptor in between
(a) fumaric acid and malic acid
(b) succinic and fumaric acid
(c) malic and oxaloacetic acid
(d) citric acid and isocitric acid

46. The process of formation of ATP in respiration is called
(a) photophosphorylation
(b) substrate phosphorylation
(c) oxidative phosphorylation
(d) phosphorylation

47. What would happen if NADH2 is oxidised to form water in a single step?
(a) Production of 3 ATP
(b) Mostly wastage of energy
(c) Production of 12 ATP
(d) None of the above

48. Electron Transport System (ETS) is located in mitochondrial
(a) outer membrane
(b) inner membrane space
(c) inner membrane
(d) matrix

49. During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?
(a) Conversion of pyruvic acid to acetyl Co-A
(b) Electron transport chain
(c) Glycolysis
(d) Krebs’ cycle

50. Mitochondria are called powerhouses of the cell. Which of the following observations support this Statement?
(a) Mitochondria have a double membrane
(b) The enzymes of the Krebs’ cycle and the cytochromes are found in mitochondria
(c) Mitochondria synthesis ATP
(d) Mitochondria are found in almost all plants and animal cells

51. The end product of oxidative phosphorylation is
(a) NADH
(b) oxygen
(c) ADP
(d) ATP+ H20

52. The ultimate electron acceptor of respiration in an aerobic organism is
(a) cytochrome
(b) oxygen
(c) hydrogen
(d) glucose

53. Read the following statements and select the wrong statements.
I. When tripalmitin is used as a substrate in respiration the RQ is 0.
II. The intermediate compound which links glycolysis with Krebs’ cycle is malic acid.
III. One glucose molecule yields a net gain of 36 ATP molecule during aerobic respiration.
IV. One glucose molecule yields a net gain of 2 ATP molecules during fermentation.
V. The scheme of glycolysis was given by Krebs.

(a) I, II and III (b) II, III and V
(c) I, II and V (d) II and IV

54. Match the following columns.
NEET Biology Chapter Wise Mock Test - Respiration in Plants 3
Codes
ABC ABC
(a) 1 3 2 (b) 2 1 3
(c) 2 3 1 (d) 3 1 2

55. The diagram given below shows the representation of ATP synthesis in mitochondria. Fill in the blanks with appropriate options.
NEET Biology Chapter Wise Mock Test - Respiration in Plants 4
(a) A-ATP, B-F,, C-Pi, D-2H+, E-Inner mitochondrial
membrane .
(b) A-ATP, B-Inner mitochondrial membrane, C—F,,
D-Pi, E-2H+
(c) A-P,0, B-ATP, C-Pi, D-Inner mitochondrial membrane
E-2H+ ‘
(d) A-Pi, B-F^ C-Inner mitochondrial membrane,
D-ATP, E-2H+

56. Match the following columns.
NEET Biology Chapter Wise Mock Test - Respiration in Plants 5
Codes
A B C D A B C D
(a) 2 4 1 3 (b) 1 -3 2 4
(c) 3 1 2 4 (d) 4 3 1 2

57.The electron acceptors in ETS are arranged
according to

(a) decreasing positive potential
(b) increasing positive potential
(c) increasing negative potential
(d) None of the above

58. Which among the following is the final electron acceptor?
(a) OAA
(b) NADP
(c) Cytochrome oxidase
(d) Pyruvate

59. In pentose phosphate shunt, the number of NADPH2
formed per glucose molecule is

(a) 12
(b) 6
(c) 2
(d) 10

60. Pentose phosphate pathway was discovered by
(a) Calvin
(b) Warburg and Dickens
(c) Hill
(d) Embden

61. EMP pathway can generate a total of
(a) 6 ATP
(b) 8 ATP
(c) 24 ATP
(d) 38 ATP

62. Which of the following is an amphibolic pathway?
(a) TCA cycle
(b) Calvin cycle
(c) Terminal oxidation
(d) ETC

63. During complete metabolism of glucose, the number of ATP formed from ADP and inorganic phosphate is
(a) 2 ATP
(b) 12 ATP
(c) 36 ATP
(d) 44 ATP

64. How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to C02 and H20 yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?
(a) 2
(b) 30
(c) 57
(d) 1

65. If volume of C02 liberated during respiration is more than the volume of 02 used then respiratory substrate will be
(a) carbohydrate
(b) fat
(c) protein
(d) organic acid

66. RQ in anaerobic respiration is
(a) 0.7
(b) 0.9
(c) unity
(d) infinity

67. Which one of the following has the highest RQ?
(a) Malic acid
(b) Protein
(c) Fat
(d) Starch

68. In succulents, respiratory quotient is always less than one due to
(a) incomplete oxidation
(b) incomplete reduction
(c) complete reduction
(d) None of these

69. In an organism utilising sugars as its source of energy anaerobically, the RQ is likely
(a) 0.7
(b) 0.9
(c) 1.0
(d) infinity

70. Respiratory Quotient (RQ) is one in case of
(a) fatty acids
(b) nucleic acids
(c) carbohydrate
(d) organic acids

71. If RQ is less than 1.0 in a respiratory metabolism, it would mean that
(a) carbohydrates are used as respiratory substrate
(b) organic acids are used as respiratory substrate
(c) the oxidation of the respiratory substrate consumed more oxygen than the amount of C02 released
(d) the oxidation of respiratory substrate consumed less oxygen than the amount of C02 released
(e) the reaction is anaerobic

72. The rate of respiration in the presence of cyanides, azides and carbon mono oxides will
(a) increase
(b) decrease
(c) remain the same
(d) None of these

73. Following diagram shows the demonstration of aerobic respiration.
What result can be drawn from it?
NEET Biology Chapter Wise Mock Test - Respiration in Plants 6
(a) The experiment shows that C02 is evolved in an aerobic respiration of seeds
(b) It shows that 02 is evolved in an aerobic respiration of seed
(c) Aerobic respiration takes place in the seed in the absence of free oxygen
(d) The potassium hydroxide forms 02 and water

74. The universal hydrogen acceptor is
(a) NAD
(b) ATP
(c) Co-A
(d) TPP

75. Substrate used in protoplasmic respiration, is
(a) carbohydrate
(b) proteins
(c) fats and oils
(d) organic acids

76. The overall goal of glycolysis, Krebs’ cycle and the electron transport system is the formation of
(a) ATP in small stepwise units
(b) ATP in one large oxidation reaction
(c) sugars
(d) nucleic acids

77. Match the following columns.
NEET Biology Chapter Wise Mock Test - Respiration in Plants 7
Codes
ABC D A B
(a) 1 2 3 4 (b) 5 4
(c) 4 5 1 2 (d) 1 5

78. Match the following columns.
NEET Biology Chapter Wise Mock Test - Respiration in Plants 8
Codes
ABCD ABCD
(a) 4 5 2 – 3 (b) 4 5 3 1
(c) 1 5 4 2 (d) 2 3 4 5

79. Dry seeds can tolerate higher temperature than the germinating seeds due to the reason that
(a) dry seeds have more reserved food
(b) hydration makes the enzymes more sensitive to temperature
(c) seeds are meant for perennation
(d) None of the above

80. The respiration in germinating seeds produces energy, which can be detected in the form of
(a) water
(b) heat
(c) oxygen
(d) C02

81. Respiration is different from combustion that is the
(a) energy from carbohydrates is released in one step
(b) energy from carbohydrates is released in different steps
(c) efficiency is very low
(d) All of the above

82. When bond between first and second phosphate of ATP is hydrolysed, the amount of energy released (at pH 7) is
(a) 1200 cal
(b) 3000 cal
(c) 1500-1800 cal
(d) 6.5 kcal

83. Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on
(a) proton gradient
(b) accumulation of K+ ions
(c) accumulation of Na ions
(d) membrane potential

Direction (Q. Nos. 84-90) In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements, mark the correct answer as
(a) If both Assertion and Reason are true and Reason is the
correct explanation of Assertion. ‘
(b) If both Assertion and Reason are true, but the Reason is
not the correct explanation of Assertion.
(c) If Assertion is true, but Reason is false.
(d) If both Assertion and Reason are false

84. Assertion ATP is the energy carrier of cell.
Reason
AMP is a nucleotide.

85. Assertion Under conditions of high light intensity and limited C02 supply, photorespiration has a useful role in protecting the plants from photo-oxidative damage.
Reason
If enough C02 is not available to utilise light energy for carboxylation to ‘processed, the excess energy may not cause damage to plants.

86. Assertion Clostridium tetani is an obligate anaerobe.
Reason
They cannot live in high concentration of oxygen.

87. Assertion Respiratory pathway is an amphibolic pathway.
Reason
The respiratory pathway is involved in both anabolism and catabolism.

88. Assertion Respiratory quotient depends upon the respiratory substrate used during respiration.
Reason
RQ of carbohydrates is 1.

89. Assertion 36 ATP molecules are formed from one molecule of glucose in muscles and nerve cells.
Reason
Aerobic respiration in prokaryotes, heart, liver and kidneys produced 38 ATP molecules per glucose molecules.

90. Assertion In electron transport chain, there is a gain of energy at each step.
Reason
At each step of ETC, there are electron carries.

91. Which structures perform the functions of mitochondria in bacteria?
(a) Nucleoid
(b) Ribosomes
(c) Cell wall
(d) Mesosomes

92. The three boxes in this diagram represents the three major biosyn the pathways in aerobic respiration and arrows represent net reacts or products
NEET Biology Chapter Wise Mock Test - Respiration in Plants 9
(a) ATP
(b) H20
(c) FAD+ or FADH2
(d) NADH

93. Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?
(a) Fructose-1,6-bisphosphate
(b) Pyruvic acid
(c) Acetyl Co-A
(d) Glucose-6-phosphate

94. The energy-released metabolic process in which substrate is oxidized without an external electron acceptor, is called
(a) glycolysis
(b) fermentation
(c) aerobic respiration
(d) photorespiration

Answers :
NEET Biology Chapter Wise Mock Test - Respiration in Plants 10

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