Class 11 Biology MCQs Respiration In Plants for NEET

Here, you will get Class 11 Biology MCQ of Chapter 14 Respiration In Plants for cracking NEET/AIIMS. By solving these MCQs of Class 11 Biology Chapter 14 Respiration In Plants, you will get the confidence to crack NEET. Practice MCQ Questions for Class 11 Biology with Answers on a daily basis and score well in exams. 

Respiration In Plants Class 11 MCQs Questions with Answers

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: (b) 2 – celled stage

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: (d) Both of these

TCA cycle was discovered by
(a) Otto Meyerhof
(b) Hans Kreb
(c) Gustav Embden
(d) All of these

Answer: (b) Hans Kreb

Herkogamy is a contrivance for
(a) allogamy
(b) autogamy
(c) chasmogamy
(d) cleistogamy

Answer: (a) allogamy

Complete the reaction: _________ + O2 → CO2 + _______ + Energy
(a) C6H12O6, 2H2O
(b) C12H22O11, 6H2O
(c) C6H12O6, 6H2O
(d) C12H22O11, 11H2O

Answer: (c) C6H12O6, 6H2O

Chlorophyll ‘a’ is found in all
(a) Oxygen liberation photosvnthetic organisms
(b) Autotrophs
(c) Higher plants
(d) Algae

Answer: (a) Chloroplasts

End-product of citric acid/Krebs cycle is​
(a) Citric acid
(b) CO2 + H2O
(c) Lactic acid
(d) Pyruvic acid

Answer: (b) CO2 + H2O

Out of 38 ATP molecules produced per glucose, 32 ATP molecules are formed from NADH/FADH2 in:
(a) respiratory chain
(b) Krebs cycle
(c) oxidative decarboxylation
(d) EMP

Answer: (a) respiratory chain

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: (b) CO2 produced to O2 consumed

Malacophily means
(a) pollination by wind
(b) pollination by water
(c) pollination by insects
(d) pollination by snails

Answer: (d) pollination by snails

The breaking of the C-C bonds of complex compounds through oxidation within the cells, leading to release of considerable amount of energy is called
(a) respiration
(b) respiratory substrates
(c) Cellular respiration
(d) All of these

Answer: (a) respiration

The significant morphological feature of passion flower is the presence of
(a) numerous corolla
(b) androphore
(c) gynophore
(d) androgynophore

Answer: (b) androphore

The final electron acceptor in electron transport chain is
(a) Cytochrome C
(b) FADH
(c) NADH
(d) oxygen

Answer: (d) oxygen

Which of the following is not correct about the Krebs cycle?
(a) It starts with a six-carbon compound.
(b) It occurs in mitochondria.
(c) It is also called the citric acid cycle.
(d) The intermediate compound which links glycolysis with the Krebs cycle is malic acid

Answer: (d) The intermediate compound which links glycolysis with the Krebs cycle is malic acid

The term ‘Glycolysis’ has originated from the Greek words
(a) Glucose and lysis
(b) Glyco and lysis
(c) Glycose and lysis
(d) Glykos and lysis

Answer: (d) Glykos and lysis

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: (b) enzyme synthesis

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

Answer: (c) pyruvate

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

Answer: (c) 1

Complete oxidation of 1 gm mol of glucose gives rise to
(a) 6860000 cals
(b) 686000 cals
(c) 68600 cals
(d) 6860 cals

Answer: (b) 686000 cals

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

Answer: (c) 38

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

Answer: (b) Cristae

A characteristic of drupe is
(a) fleshy seed coat
(b) stony pericarp
(c) stony mesocarp
(d) stony endocarp

Answer: (d) stony endocarp

Cytochromes are concerned with
(a) Protein synthesis
(b) Cellular digestion
(c) Cell division
(d) Cell-respiration

Answer: (d) Cell-respiration

The net gain of ATP during glycolysis is
(a) 4
(b) 8
(c) 2
(d) 6

Answer: (b) 8

The TCA cycle starts with the condensation of acetyl group with
(a) Oxaloacetic acid
(b) Water to yield citric acid
(c) (a) and (b) Both
(d) None of these

Answer: (c) (a) and (b) Both

Oxidative phosphorylation is production of
(a) ATP in photosynthesis
(b) NADPH in photosynthesis
(c) ATP in respiration
(d) NADH in respiration

Answer: (c) ATP in respiration

Acetyl CoA combine with oxalo-acetate in presence of condensing enzyme citrate synthase to form 6-C compound called
(a) Malic acid
(b) Tartaric acid
(c) Pyruvic acid
(d) Citric acid

Answer: (d) Citric acid

Out of 36 ATP molecules produced per glucose molecule during respiration:
(a) 2 are produced outside glycolysis and 34 during respiratory chain
(b) 2 are produced outside mitochondria and 34 inside mitochondria
(c) 2 during glycolysis and 34 during Krebs cycle
(d) All are formed inside mitochondria

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

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: (a) Cytochrome c

First product of photorespiration is
(a) Glycolate
(b) Glycine
(c) Glvceine
(d) Phosphoglycolate

Answer: (d) Phosphoglycolate

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: (c) pair of glumes

The complete oxidation of pyruvate take place in
(a) cell cytoplasm
(b) inner mitochondrial membrane
(c) mitochondrial matrix
(d) nucleus

Answer: (c) mitochondrial matrix

NADH produced in the mitochondrial matrix during citric acid cycle are oxidised by an NADH dehydrogenase
(a) Complex I
(b) Complex II
(c) Complex III
(d) Complex IV

Answer: (a) Complex I

During synthesis of a glucose molecule, ATP and NADPH consumed are respectively
(a) 15 and 12
(b) 12 and 8
(c) 30 and 20
(d) 18 and 12

Answer: (d) 18 and 12

Chioroplast DNA or ct DNA is
(a) Naked
(b) Circular
(c) Single stranded
(d) All of these

Answer: (d) All of these

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