Respiration in Plants Class 11 MCQ Online Test With Answers Questions

Check the below Online Education NCERT MCQ Questions for Class 11 Biology Chapter 14 Respiration in Plants with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have provided Respiration in Plants Class 11 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 11 Biology Chapter 14 MCQ With Answers

Biology Class 11 Chapter 14 MCQs On Respiration in Plants

Respiration In Plants Class 11 MCQ Question 1.
R.Q is ratio of
(a) CO₂ produced to substarate consumed
(b) CO₂ produced to O₂ consumed
(c) oxygen consumed to CO₂ produced
(d) oxygen consumed to water produced

Answer

Answer: (b) CO₂ produced to O₂ consumed

Respiration In Plants MCQ Question 2.
Angiosperm pollen is generally released at the
(a) 1 – celled stage
(b) 2 – celled stage
(c) 3 – celled stage
(d) male gamete formation stage

Answer

Answer: (b) 2 – celled stage

MCQ On Respiration In Plants Class 11 Question 3.
The complete oxidation of pyruvate take place in
(a) cell cytoplasm
(b) inner mitochondrial membrane
(c) mitochondrial matrix
(d) nucleus

Answer

Answer: (c) mitochondrial matrix
Explanation:
Pyruvate is transported from cytoplasm into the mitochondria. The complete oxidation of pyruvate takes place in matrix of mitochondria.

MCQ On Respiration In Plants Question 4.
Which enzyme catalyses the reaction below? Pyruvic acid → Carbon dioxide + Ethanol
(a) Pyruvic acid decarboxylase
(b) Alcohol dehydrogenase
(c) None of these
(d) Both of these

Answer

Answer: (d) Both of these
Explanation:
In fermentation, the incomplete oxidation of glucose is achieved under anaerobic conditions by sets of reactions in which pyruvic acid is converted to carbon dioxide and ethanol.
The enzymes involved are pyruvic acid decarboxylase and alcohol dehydrogenase.

Respiration And Energy Transfer Class 11 MCQ Question 5.
TCA cycle was discovered by
(a) Otto Meyerhof
(b) Hans Kreb
(c) Gustav Embden
(d) All of these

Answer

Answer: (b) Hans Kreb
Explanation:
TCA cycle or tricarboxylic acid cycle was given by Hans Kreb. So it is also called as Kreb cycle.

MCQs On Respiration In Plants Question 6.
Which one of the following describes the spikelet of a cereal or grass plant
(a) inferior ovary
(b) dehiscent fruit
(c) pair of glumes
(d) fused calyx

Answer

Answer: (c) pair of glumes

Respiration In Plants MCQs Question 7.
Malacophily means
(a) pollination by wind
(b) pollination by water
(c) pollination by insects
(d) pollination by snails

Answer

Answer: (d) pollination by snails

Respiration Class 11 MCQ Question 8.
Herkogamy is a contrivance for
(a) allogamy
(b) autogamy
(c) chasmogamy
(d) cleistogamy

Answer

Answer: (a) allogamy

Chapter 14 Biology Class 11 MCQs Question 9.
Out of 36 ATP molecules produced per glucose molecule during respiration
(a) 2 are produced outside glycolysis and 34 during repiratory chain
(b) 2 are produced outside mitochondria and 34 inside the mitochondria
(c) all the formed inside mitochondria
(d) 2 during glycolysis and 34 during kreds cycle

Answer

Answer: (b) 2 are produced outside mitochondria and 34 inside the mitochondria

MCQ Questions On Respiration In Plants Question 10.
Complete the reaction. _________ + O₂ → CO₂ + _______ + Energy
(a) C₆H₁₂O₆, 2H₂O
(b) C₁₂H₂₂O₁₁, 6H₂O
(c) C₆H₁₂O₆, 6H₂O
(d) C₁₂H₂₂O₁₁, 11H₂O

Answer

Answer: (c) C₆H₁₂O₆, 6H₂O
Explanation:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy

Respiration In Plants Class 11 MCQs Question 11.
The significant morphological feature of passion flower is the presence of
(a) numerous corolla
(b) androphore
(c) gynophore
(d) androgynophore

Answer

Answer: (b) androphore

MCQ Of Respiration In Plants Class 11 Question 12.
The final electron acceptor in electron transport chain is
(a) Cytochrome C
(b) FADH
(c) NADH
(d) oxygen

Answer

Answer: (d) oxygen
Explanation:
Oxygen acts as the final electron acceptor in electron transport chain.

Respiration In Plants MCQ Pdf Question 13.
Which of the following acts as mobile carrier for transfer of electrons between complex III and complex IV?
(a) Cytochrome c
(b) cytochrome a3
(c) cytochrome a
(d) FADH₂

Answer

Answer: (a) Cytochrome c
Explanation:
Cytochrome c is a small protein attached to outer surface of the inner membrane and acts as mobile carrier for transfer of electrons between complex III and IV.

Class 11 Biology Chapter 14 MCQs Question 14.
Aleurone layer takes part in
(a) protection of delicate embryo
(b) enzyme synthesis
(c) transfer of food to cotyledons
(d) transfer of food from cotyledons to embryo tips

Answer

Answer: (b) enzyme synthesis

Class 11 Biology Respiration In Plants MCQ Question 15.
A characteristic of drupe is
(a) fleshy seed coat
(b) stony pericarp
(c) stony mesocarp
(d) stony endocarp

Answer

Answer: (d) stony endocarp

Question 16.
Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is know as
(a) TCA pathway
(b) Glycolysis
(c) Hms pathway
(d) Glycolysis

Answer

Answer: (b) Glycolysis

Question 17.
End product of glycolysis is
(a) acetyl Coenzyme A
(b) PEP
(c) pyruvate
(d) OAA

Answer

Answer: (c) pyruvate
Explanation:
The end product of glycolysis is pyruvate.

Question 18.
Respiratory enzymes are located in
(a) mitochondrial matrix
(b) Cristae
(c) perimitochondrial space
(d) outer membrane

Answer

Answer: (b) Cristae

Question 19.
Respiratory quotient of carbohydrates is
(a) 0.9
(b) 1.2
(c) 1
(d) 0

Answer

Answer: (c) 1
Explanation:
RQ i.e. respiratory quotient is 1.
RQ = volume of CO₂ evolved / volume of O₂ consumed

Question 20.
One molecule of glucose yields ___ ATP molecules in aerobic respiration.
(a) 2
(b) 16
(c) 38
(d) 42

Answer

Answer: (c) 38
Explanation:
One molecule of glucose yields 38 molecules of ATP during aerobic respiration.

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