Respiration in Plants MCQs | Respiration in Plants Objective Type Questions with Answers

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Questions
1 The ultimate respiratory substrate, yielding maximum number of ATP molecules, is
A glycogen
B glucose
C amylose
D ketogenic amino acid

Answer:glucose
2 End product of citric acid/ Kreb’s cycle is
A citric acid
B pyruvic acid
C latic acid
D carbon dioxide and water

Answer:carbon dioxide and water
3 The first phase in the breakdown of glucose, in animal cell, is
A glycolysis
B E.T.S
C Kreb’s cycle
D Glycolysis

Answer: glycolysis
4 End product of fermentation are
A O2 and C2H5OH
B CO2 and O2
C CO2 and C2H5OH
D CO2 and acetyaldehyde

Answer:CO2 and C2H5OH
5 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 Krebs cycle

Answer:2 are produced outside mitochondria and 34 inside the mitochondria
6 Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is known as
A TCA pathway
B Glycolysis
C HMS pathway
D Glycolysis

Answer: Glycolysis
7 When one glucose molecule is completely oxidised, it changes
A 36 ADP molecules into 36 ATP molecules
B 38 ADP molecules into 38 ATP molecules
C 30 ADP molecules into 30 ATP molecules
D 32 ADP molecules into 32 ATP molecules

Answer: 38 ADP molecules into 38 ATP molecules
8 Terminal cytochrome of respiratory chain which donates electrons to oxygen is
A Cyt. b
B Cyt.a1
C Cyt.c
D Cyt.a3

Answer:Cyt.a3
9 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: CO2 produced to O2 consumed
10 Which of the following statements are correct regarding respiration in plants?
I. Respiration is the process of releasing energy from food.
II. Respiration takes place individually in all parts of the plants like stem, roots, leaves etc.
III. The rate of respiration is slow in plants whereas it is faster in humans and animals.
Select the correct answer from the codes given below:
A I and III are correct
B I and II are correct
C I, II and III are correct
D None of the above

Answer: I, II and III are correct
11 Name the process through which much needed oxygen is supplied to all the cells of the plants?
A Diffusion
B Endosmosis
C Exosmosis
D Photosynthesis

Answer: Diffusion
12 Due to Water logging:
A An air is expelled from in-between the particles of soil
B Oxygen becomes unavailable to the roots of the plants
C Plants respire anaerobically which produces alcohol and kill them
D All the above are correct

Answer:All the above are correct
13 Respiration in Plants takes place through:
A Stomata
B Lenticels
C Both A and B
D Only A

Answer: Both A and B
14 Consider the following statements:
A Respiration takes place both day and night
B Photosynthesis occurs during day time only
C Both A and B are correct
D Neither A nor B are correct

Answer: Both A and B are correct
15 Some plants store waste in their fruits in the form of solid bodies called:
A Raphides
B Lenticels
C Stomata
D Resins

Answer: Raphides
16 Various methods used by plants to get rid of their waste products are:
I. Gaseous waste through stomata and lenticels.
II. Stored solid and liquid waste by shedding leaves, peeling of bark and falling of fruits.
III. By secreting waste in the form of gum and resins.
Which of the following statements is/are correct?
A I and II are correct
B II and III are correct
C I and III are correct
D I, II and III are correct

Answer:I, II and III are correct
17 Name the waste products secreted by Plants?
A Carbon Dioxide
B Oxygen
C Water Vapour
D All are correct

Answer: All are correct
18 Which of the following statements is/are correct?
I. The net gaseous exchange in leaves at night is, oxygen diffuses in and carbon dioxide diffuses out.
II. Net gaseous exchange during day time is, oxygen diffuses out and carbon dioxide diffuses in.
Select the correct answer from the codes given below:
A Only I is correct
B Only II is correct
C Both I and II are correct
D Neither I nor II is correct

Answer:Both I and II are correct
19 Name an extension of the epidermal cells of a root which is in direct contact with the soil?
A Root Hairs
B Internodes
C Bundle Scars
D Pith

Answer:Root Hairs
20 The ultimate electron acceptor in an aerobic respiraton is:
A Oxygen
B Cytochrome
C Hydrogen
D Glucose

Answer: Oxygen

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