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NEET • BIOLOGY • RESPIRATION IN PLANTS
Respiration in plants practice · Mixed difficulty
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91
Medium
91 of 202
Remembering
+4 | -1
The energy-releasing metabolic process in which substrate is oxidized without an external electron acceptor, is called
View answer and explanation
Correct option: B
Fermentation
Option B (Fermentation) is correct because it is an energy-releasing metabolic process where a substrate is oxidized without an external electron acceptor.
92
Hard
92 of 202
Understanding
+4 | -1
Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : ATP is used at two steps in glycolysis.
Reason R : First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in
conversion of fructose-6-phosphate into fructose-1, 6-diphosphate.
In the light of the above statements, choose the correct answer from the options given below :
Assertion A : ATP is used at two steps in glycolysis.
Reason R : First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in
conversion of fructose-6-phosphate into fructose-1, 6-diphosphate.
In the light of the above statements, choose the correct answer from the options given below :
View answer and explanation
Correct option: C
Both A and R are true and R is the correct explanation of A
Option C (Both A and R are true and R is the correct explanation of A) is correct because ATP is indeed used at two steps in glycolysis, and the reason correctly identifies those two steps.
93
Medium
93 of 202
Understanding
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Most of the biological energy is supplied by mitochondria through
View answer and explanation
Correct option: D
Oxidising TCA (tricarboxylic acid) substrate
Option D (Oxidising TCA (tricarboxylic acid) substrate) is correct because the electron transport chain, powered by the oxidation of TCA cycle intermediates, generates the majority of ATP.
94
Easy
94 of 202
Remembering
+4 | -1
The respiratory quotient is unity for
View answer and explanation
Correct option: B
Carbohydrates
Option B (Carbohydrates) is correct because carbohydrates have a respiratory quotient (RQ) of 1, indicating that the volume of produced equals the volume of consumed.
95
Easy
95 of 202
Understanding
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The respiratory quotient during cellular respiration would depend on the
View answer and explanation
Correct option: B
Nature of the substrate
Option B (Nature of the substrate) is correct because the respiratory quotient is directly determined by the type of substrate being respired.
96
Easy
96 of 202
Remembering
+4 | -1
Phosphorylation of glucose during glycolysis is catalyzed by?
View answer and explanation
Correct option: C
Hexokinase
Option C (Hexokinase) is correct because hexokinase is the enzyme that catalyzes the phosphorylation of glucose during glycolysis.
97
Easy
97 of 202
Remembering
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The enzymes for TCA cycle are present in
View answer and explanation
Correct option: C
Mitochondria
Option C (Mitochondria) is correct because the TCA cycle (Krebs cycle) enzymes are located within the mitochondria.
98
Hard
98 of 202
Understanding
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Wounding of plant tissues will show
View answer and explanation
Correct option: A
Temporary increase in respiration
Option A is correct because wounding plant tissues temporarily increases respiration due to increased metabolic activity for repair.
99
Hard
99 of 202
Understanding
+4 | -1
Respiratory pathway is?
View answer and explanation
Correct option: B
Amphibolic
Option B (Amphibolic) is correct because the respiratory pathway involves both the breakdown of molecules (catabolism) and the synthesis of molecules (anabolism).
100
Easy
100 of 202
Understanding
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The main purpose of cellular respiration is to
View answer and explanation
Correct option: D
Convert energy stored in the chemical bonds of glucose to an energy that the cell can use
The correct answer is D (Convert energy stored in the chemical bonds of glucose to an energy that the cell can use) because cellular respiration breaks down glucose to release energy stored in its bonds, converting it into ATP, which the cell can use for various functions.
101
Easy
101 of 202
Understanding
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2NADH produced during anaerobic glycolysis yield
View answer and explanation
Correct option: D
None of these
Option D (None of these) is correct because during anaerobic glycolysis, the 2 NADH+H+ produced are used to reduce pyruvate to lactate or acetaldehyde, and are not directly used to generate ATP via oxidative phosphorylation as in aerobic respiration.
102
Medium
102 of 202
Remembering
+4 | -1
The reactions of Pentose Phosphate Pathway (PPP) take place in
View answer and explanation
Correct option: B
Cytoplasm
Option B (Cytoplasm) is correct because the enzymes of the pentose phosphate pathway are located in the cytoplasm.
103
Medium
103 of 202
Remembering
+4 | -1
In citric acid cycle first step is
View answer and explanation
Correct option: A
Acetyl Co-A combines with oxalo acetic acid
Option A (Acetyl Co-A combines with oxalo acetic acid) is correct because the first step of the citric acid cycle involves the combination of acetyl-CoA with oxaloacetic acid to form citric acid.
104
Easy
104 of 202
Understanding
+4 | -1
Refrigerated fruits maintain flavor and taste for longer period due to
View answer and explanation
Correct option: D
Slower rate of respiration
Option D (Slower rate of respiration) is correct because refrigeration slows down metabolic processes, including respiration, thus preserving flavor and taste.
105
Easy
105 of 202
Remembering
+4 | -1
Choose the correct combination of A and B according to NCERT text book.
All living organisms need …A… for carrying out daily life activities and is obtained by …B… of macromolecules
All living organisms need …A… for carrying out daily life activities and is obtained by …B… of macromolecules
View answer and explanation
Correct option: C
A-energy; B-oxidation
Option C is correct because living organisms need energy for daily activities, which is obtained through the oxidation of macromolecules.
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106
Easy
106 of 202
Remembering
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Glycolysis takes place in
View answer and explanation
Correct option: A
All living cells
Option A (All living cells) is correct because glycolysis is a fundamental metabolic pathway present in all living organisms, both prokaryotic and eukaryotic.
107
Easy
107 of 202
Remembering
+4 | -1
Energy currency of cell is
View answer and explanation
Correct option: C
ATP
Option C (ATP) is correct because ATP (adenosine triphosphate) is the primary energy currency of the cell, providing energy for various cellular processes.
108
Medium
108 of 202
Understanding
+4 | -1
In plants, glucose is derived from which of the following?
View answer and explanation
Correct option: D
Sucrose
Option D (Sucrose) is correct because sucrose is a disaccharide that is broken down into glucose and fructose, providing glucose for plant metabolism.
109
Easy
109 of 202
Understanding
+4 | -1
In respiration incomplete oxidation of glucose is done under
View answer and explanation
Correct option: B
Anaerobic respiration
Option B (Anaerobic respiration) is correct because it involves the incomplete breakdown of glucose in the absence of oxygen, leading to products like lactic acid or ethanol.
110
Easy
110 of 202
Remembering
+4 | -1
Krebs’ cycle begins with the reaction
View answer and explanation
Correct option: D
Oxaloacetic acid + acetyl Co-A
Option D (Oxaloacetic acid + acetyl Co-A) is correct because the Krebs' cycle begins with the condensation of oxaloacetic acid and acetyl Co-A to form citric acid.
111
Medium
111 of 202
Remembering
+4 | -1
In the electron transport system present in the inner mitochondrial membrane, complexes I and IV are respectively
View answer and explanation
Correct option: C
NADH Dehydrogenase and cytochrome-c oxidase complex
Option C (NADH Dehydrogenase and cytochrome-c oxidase complex) is correct because Complex I is NADH dehydrogenase and Complex IV is cytochrome-c oxidase complex in the electron transport system.
112
Easy
112 of 202
Understanding
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Assertion: Food has to be translocated to all non green parts
of plant
Reason: Non-green part can’t synthesize their food
of plant
Reason: Non-green part can’t synthesize their food
View answer and explanation
Correct option: A
If both the assertion and the reason are true and the
reason is a correct explanation of the
assertion
reason is a correct explanation of the
assertion
Option A (If both the assertion and the reason are true and the reason is a correct explanation of the assertion) is correct because non-green parts cannot photosynthesize and rely on translocation of food from green parts.
113
Medium
113 of 202
Understanding
+4 | -1
Seeds respire in
View answer and explanation
Correct option: D
both 1 and 3
Option D (both 1 and 3) is correct because seeds can respire both aerobically (in the presence of oxygen) and anaerobically (in the absence of oxygen), although aerobic respiration is more efficient.
114
Medium
114 of 202
Understanding
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Assertion: Plants can get along without respiratory organs.
Reason: Roots, stems and leaves respire at rates per lower than animals do.
Reason: Roots, stems and leaves respire at rates per lower than animals do.
View answer and explanation
Correct option: A
If both Assertion & Reason are true and the reason is the correct explanation of the assertion
Option A is correct because plants don't have specialized respiratory organs, and their respiration rate is lower than animals, making the assertion and reason true and related.
115
Easy
115 of 202
Remembering
+4 | -1
Cyanide resistant pathway is
View answer and explanation
Correct option: A
Anaerobic respiration
Option A (Anaerobic respiration) is correct because cyanide inhibits the electron transport chain in aerobic respiration, so a cyanide-resistant pathway would be associated with anaerobic processes.
116
Medium
116 of 202
Understanding
+4 | -1
Which of the given organic molecules have RQ less than unity?
A. Fat B. Oxalic acid C. Protein D. Carbohydrate
A. Fat B. Oxalic acid C. Protein D. Carbohydrate
View answer and explanation
Correct option: D
A and C
Option D is correct because fats and proteins have RQ values less than unity, while oxalic acid and carbohydrates have RQ values greater than or equal to unity.
117
Easy
117 of 202
Application
+4 | -1
The total energy trapped per gm mole of glucose is 1292 kJ with on efficiency of
View answer and explanation
Correct option: C
0.45
Option C (0.45) is correct because the efficiency is calculated by dividing the energy trapped in ATP by the total energy released from glucose oxidation.
118
Medium
118 of 202
Understanding
+4 | -1
In photosynthesis, NADPH is formed but in respiration it forms during
View answer and explanation
Correct option: A
HMP
Option A (HMP) is correct because NADPH is formed during the Hexose Monophosphate Pathway (HMP), also known as the Pentose Phosphate Pathway, which can operate alongside respiration.
119
Easy
119 of 202
Remembering
+4 | -1
Decarboxylation is involved in
View answer and explanation
Correct option: C
Krebs’ cycle
Option C (Krebs’ cycle) is correct because decarboxylation, the removal of a carbon atom as , occurs in several steps within the Krebs cycle.
120
Medium
120 of 202
Understanding
+4 | -1
In oxidative decarboxylation, only a carbon molecule of pyruvic acid is get oxidised, other two carbon molecule goes to form
View answer and explanation
Correct option: A
Acetyl Co-A
Option A (Acetyl Co-A) is correct because the two-carbon molecule resulting from oxidative decarboxylation binds to Coenzyme A to form Acetyl Co-A.
Revision notes and key takeaways
Review RESPIRATION IN PLANTS in your textbook or class notes, then use this set to check your understanding.
Showing 91-120 of 202 questions