MCQ Questions for Class 11 Biology with Answers<\/a> are prepared as per the Latest Exam Pattern. Students can solve these Respiration in Plants Class 11 MCQs Questions with Answers and assess their preparation level.<\/p>\nRespiration in Plants Class 11 MCQs Questions with Answers<\/h2>\n
Solving the Respiration in Plants Multiple Choice Questions of Class 11 Biology Chapter 14 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Respiration in Plants Class 11 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 14 Biology Class 11 and cross-check your answers during preparation.<\/p>\n
I. Select the correct answer from the following questions:<\/span><\/p>\nQuestion 1.
\nMajor fraction of CO2<\/sub> released during cellular respiration is transported in blood through the lungs in the form of
\n(a) Free CO2<\/sub>
\n(b) HCO3<\/sub>
\n(c) H2<\/sub> CO3<\/sub>
\n(d) In combination with Hb CO2<\/sub><\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) H2<\/sub> CO3<\/sub><\/p>\n<\/details>\n
\nQuestion 2.
\nSudden deep inspiration is due to
\n(a) Increase in concentration of CO2<\/sub>
\n(b) Increase in concentration of O2<\/sub>
\n(c) Either increase in cone, of CO2<\/sub> or decrease in concentration of O2<\/sub>
\n(d) Decrease in concertration of CO2<\/sub><\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Increase in concentration of CO2<\/sub><\/p>\n<\/details>\n
\nQuestion 3.
\nFixing of CO2<\/sub> and liberation of oxygen in light is done with the help of
\n(a) chioroplast
\n(b) Mesophyll cells
\n(c) Mitocondria
\n(d) Chromatophores<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Chioroplast<\/p>\n<\/details>\n
\nQuestion 4.
\nAH vegetation is only due to
\n(a) CO2<\/sub>
\n(b) Water
\n(c) Oxygen
\n(d) Hydrogen<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) Water<\/p>\n<\/details>\n
\nQuestion 5.
\nChioroplast DNA or ct DNA is
\n(a) Naked
\n(b) Circular
\n(c) Single stranded
\n(d) All of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (d) All of these<\/p>\n<\/details>\n
\nQuestion 6.
\nDuring synthesis of a glucose molecule, ATP and NADPH consumed are respectively
\n(a) 15 and 12
\n(b) 12 and 8
\n(c) 30 and 20
\n(d) 18 and 12<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (d) 18 and 12<\/p>\n<\/details>\n
\nQuestion 7.
\nPhotorespiration takes place in
\n(a) Lvsosomes
\n(b) Peroxisomes
\n(c) Ribosomes
\n(d) Mitochondria<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (b) Peroxisomes<\/p>\n<\/details>\n
\nQuestion 8.
\nChlorophyll ‘a’ is found in all
\n(a) Oxygen liberation photosvnthetic organisms
\n(b) Autotrophs
\n(c) Higher plants
\n(d) Algae<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Oxygen liberation photosynthetic organisms<\/p>\n<\/details>\n
\nQuestion 9.
\nThe atmosphere contains CO2<\/sub> by volume
\n(a) 0.1%
\n(b) 0.5%
\n(c) 0.03%
\n(d) 0.3%<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) 0.03 %<\/p>\n<\/details>\n
\nQuestion 10.
\nGreen plants convert solar energy into chemical energy of organic matter was proved by
\n(a) Van Mayer
\n(b) Lavoisier
\n(c) Joseph Priestly
\n(d) Semebier<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Van Mayer<\/p>\n<\/details>\n
\nQuestion 11.
\nWastage of energy is associated with
\n(a) Glycolysis
\n(b) Photosynthesis
\n(c) Krebs cycle
\n(d) Photorespiration<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (d) Photorespiration<\/p>\n<\/details>\n
\nQuestion 12.
\nIf a photosvnthesising plant releases oxygen containing more amount of lsO, it is concluded that the plant has been supplied with
\n(a) 18<\/sup>O from 18<\/sup> CO2<\/sub>
\n(b) 18<\/sup>O from 18<\/sup>CO2<\/sub>
\n(c) 18<\/sup>O from H2<\/sub> 18<\/sup>O
\n(d) .None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) 18<\/sup> O from H2<\/sub> 18<\/sup>O<\/p>\n<\/details>\n
\nQuestion 13.
\nCarbon dioxide acceptor in C3<\/sub> plants is:
\n(a) RuBP
\n(b) RMP
\n(c) PGA
\n(d) PEP<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) RuBP<\/p>\n<\/details>\n
\nQuestion 14.
\nPhotosynthetic process is completed in
\n(a) Chloroplasts
\n(b) Chlorophyll
\n(c) Chromatophores
\n(d) Mitochondria<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Chloroplasts.<\/p>\n<\/details>\n
\nQuestion 15.
\nDuring synthesis of a glucose molecule, ATP and NADPH consumed are respectively
\n(a) 12 and 8
\n(b) 30 and 20
\n(c) 15 and 12
\n(d) 18 and 12<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (d) 18 and 12<\/p>\n<\/details>\n
\nQuestion 16.
\nFirst product of photorespiration is
\n(a) Glycolate
\n(b) Glycine
\n(c) Glvceine
\n(d) Phosphoglycolate<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (d) Phosphoglycolate<\/p>\n<\/details>\n
\nQuestion 17.
\nThe breaking of the C-C bonds of complex compounds through oxidation within the cells, leading to release of considerable amount of energy is called
\n(a) respiration
\n(b) respiratory substrates
\n(c) Cellular respiration
\n(d) All of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Respiration<\/p>\n<\/details>\n
\nQuestion 18.
\nThe TCA cycle starts with the condensation of acetyl group with
\n(a) Oxaloacetic acid
\n(b) Water to yield citric acid
\n(c) (a) and (b) Both
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) (a) and (b) Both<\/p>\n<\/details>\n
\nQuestion 19.
\nThe metabolic pathway through which the electron passes from one carrier to another, is called the
\n(a) Electron transport system
\n(b) Complex I
\n(c) Complex II
\n(d) Complex IV<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Electron transport system<\/p>\n<\/details>\n
\nQuestion 20.
\nNADH produced in the mitochondrial matrix during citric acid cycle are oxidised by an NADH dehydrogenase
\n(a) Complex I
\n(b) Complex II
\n(c) Complex III
\n(d) Complex IV<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Complex I<\/p>\n<\/details>\n
\nQuestion 21.
\nThe energy released during the electron transport system is utilised in synthesising ATP with the help of ATP synthase
\n(a) Complex III
\n(b) Complex IV
\n(c) Complex V
\n(d) None of these<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (c) Complex V<\/p>\n<\/details>\n
\nQuestion 22.
\nThe ratio of the volume of CO2<\/sub> evolved to the volume of O2<\/sub> consumed in respiration is called the
\n(a) respiratory quotient
\n(b) amphibolic pathway
\n(c) catabolism
\n(d) anabolism<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: (a) Respiratory quotient.<\/p>\n<\/details>\n
\nII. Fill in the blanks:<\/span><\/p>\nQuestion 1.
\nAll the energy required for ‘life’ processes is obtained by oxidation of some macromolecules that we call ……………<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: Food<\/p>\n<\/details>\n
\nQuestion 2.
\nGreen plants trap light energy and convert it into chemical energy that is stored in the bonds of carbohydrates like ………., ………… and ………….<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: glucose, sucrose, starch<\/p>\n<\/details>\n
\nQuestion 3.
\nAnimals are …………… i.e. they obtain food form plants directly (herbivores) or indirectly (carnivores).<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: heterotrophic<\/p>\n<\/details>\n
\nQuestion 4.
\nThe compounds that are oxidised during this process are known as …………….<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: respiratory substrates<\/p>\n<\/details>\n
\nQuestion 5.
\n………., ………… and …………. respire at rates far lower than are characteristic for animals.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: Root, stems, leaves<\/p>\n<\/details>\n
\nQuestion 6.
\nIn stems, the ‘…………..’ cells are organised in thin layers in and beneath the bark.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: living<\/p>\n<\/details>\n
\nQuestion 7.
\nThe complete ……………. of glucose, which produces CO2<\/sub> and H2<\/sub>O as end products, yields energy most of which is given out as heat.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: combustion<\/p>\n<\/details>\n
\nQuestion 8.
\nThe scheme of glycolysis was given by …………….. and J.Pamas, and is often referred to as the …………. pathway.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: Gustav Embden, Otto Meyerhof, EMP<\/p>\n<\/details>\n
\nQuestion 9.
\n……………. are phosphorylated to give rise to glucose- 6-phosphate by the activity of the enzyme hexokinase.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: Glucose and fructose<\/p>\n<\/details>\n
\nQuestion 10.
\nATP is utilised at two steps: first in the conversion of ………… into glucose 6-phosphate and second in the conversion of ………….. 6- phosphate to fructose 1, 6-diphosphate.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: glucose, fructose<\/p>\n<\/details>\n
\nQuestion 11.
\nThese are ………….. major ways in which different cells handle Pyruvic acid produced by glycolysis.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: three,<\/p>\n<\/details>\n
\nQuestion 12.
\nIn fermentation, say by yeast, the incomplete oxidation of glucose is achieved under anaerobic conditions by sets of reactions where ………… is converted to CO2<\/sub> and ethanol.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: Irrational<\/p>\n<\/details>\n
\nQuestion 13.
\nIn a coupled reaction GTP is converted to GDP with the stimultaneous synthesis of ……….. from …………<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: ATP, ADP<\/p>\n<\/details>\n
\nQuestion 14.
\nWhen the electrons pass from one carrier to another via complex I to IV in the electron transport chain, they are coupled to ATP synthase (complex V) for the production of …………. from …………… and ……………..<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: ATP, ADP, inorganic phosphate<\/p>\n<\/details>\n
\nQuestion 15.
\n………… is favoured substrate for respiration.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: Glucose<\/p>\n<\/details>\n
\nIII. Mark the statement True (T) or False (F)<\/span><\/p>\nQuestion 1.
\nSaprophytes like fungi are dependent on green plant.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: False<\/p>\n<\/details>\n
\nQuestion 2.
\nUsually carbohydrates are oxidised to release energy, but proteins, fats and even organic acids can be used as respiratory substances in some plants, under certain conditions.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 3.
\nOnly during photosynthesis are large volumes of gases exchanged and each leaf is well adapted to take care of its own needs during these periods.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 4.
\nIn stems, the ‘living’ cells are organised in thin layers in and beneath the bark. They also have openings called lenticels.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 5.
\nThe combustion reaction requires carbon.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: False<\/p>\n<\/details>\n
\nQuestion 6.
\nSucrose is converted into glucose and fructose by the enzyme invertase, and these two monosaccharides can readily enter the glycolytic pathway.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 7.
\nFor the complete oxidation of glucose to O2<\/sub> and CO2<\/sub>, however, organisms adopt Kreb’s cycle which is also called as aerobic respiration. This requires CO2<\/sub> supply.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: False<\/p>\n<\/details>\n
\nQuestion 8.
\nYeasts poison themselves to death when the concentration of alcohol reaches about 25 percent.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: False<\/p>\n<\/details>\n
\nQuestion 9.
\nThe complete oxidation of pyruvate by the stepwise removel of all the hydrogen atoms, leaving three molecules of CO2<\/sub>.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 10.
\nIn the remaining steps of citric acid cycle, succinyl-CoA is oxidised to OAA allowing the cycle to continue.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 11.
\nThe reduced ubiquinone (Ubiquinol) is than oxidised with the transfer of electrons to cytochrome C via cytochrome be complex (complex III).<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 12.
\nThe F1<\/sub> headpiece is a peripheral membrane protein complex and contains the site for synthesis of ATP from ADP and inorganic phosphate.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 13.
\nNADH is oxidised to NAD–<\/sup> rather slowly in fermentation, however the reaction is very vigorous in case of aerobic respiration.<\/p>\n\nAnswer<\/span><\/summary>\nAnswer: True<\/p>\n<\/details>\n
\nQuestion 14.
\nGlycerol would enter the pathway after being conveted to PGAL.<\/p>\n\n