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Respiration In Plants - (Class 11th Biology) Revision Test | MCQs For NEET

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This practice test includes 25 important multiple-choice questions (MCQ) from the chapter Respiration In Plants in Class 11th Biology for NEET-UG, viva, medical, and other competitive entrance exams. Start Test without Login in
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Q.1. R.Q is ratio of

  1. CO2 produced to substarate consumed
  2. CO2 produced to O2 consumed
  3. oxygen consumed to CO2 produced
  4. oxygen consumed to water produced

Q.2. Angiosperm pollen is generally released at the

  1. 1 – celled stage
  2. 2 – celled stage
  3. 3 – celled stage
  4. male gamete formation stage

Q.3. The complete oxidation of pyruvate take place in

  1. cell cytoplasm
  2. inner mitochondrial membrane
  3. mitochondrial matrix
  4. nucleus

Q.4. Which enzyme catalyses the reaction below? Pyruvic acid → Carbon dioxide + Ethanol

  1. Pyruvic acid decarboxylase
  2. Alcohol dehydrogenase
  3. None of these
  4. Both of these

Q.5. TCA cycle was discovered by

  1. Otto Meyerhof
  2. Hans Kreb
  3. Gustav Embden
  4. All of these

Q.6. Which one of the following describes the spikelet of a cereal or grass plant

  1. inferior ovary
  2. dehiscent fruit
  3. pair of glumes
  4. fused calyx

Q.7. Malacophily means

  1. pollination by wind
  2. pollination by water
  3. pollination by insects
  4. pollination by snails

Q.8. Herkogamy is a contrivance for

  1. allogamy
  2. autogamy
  3. chasmogamy
  4. cleistogamy

Q.9. Out of 36 ATP molecules produced per glucose molecule during respiration

  1. 2 are produced outside glycolysis and 34 during repiratory chain
  2. 2 are produced outside mitochondria and 34 inside the mitochondria
  3. all the formed inside mitochondria
  4. 2 during glycolysis and 34 during kreds cycle

Q.10. Complete the reaction. _________ + O2 → CO2 + _______ + Energy

  1. C6H12O6, 2H2O
  2. C12H22O11, 6H2O
  3. C6H12O6, 6H2O
  4. C12H22O11, 11H2O

Q.11. The significant morphological feature of passion flower is the presence of

  1. numerous corolla
  2. androphore
  3. gynophore
  4. androgynophore

Q.12. The final electron acceptor in electron transport chain is

  1. Cytochrome C
  2. FADH
  3. NADH
  4. oxygen

Q.13. Which of the following acts as mobile carrier for transfer of electrons between complex III and complex IV?

  1. Cytochrome c
  2. cytochrome a3
  3. cytochrome a
  4. FADH2

Q.14. Aleurone layer takes part in

  1. protection of delicate embryo
  2. enzyme synthesis
  3. transfer of food to cotyledons
  4. transfer of food from cotyledons to embryo tips

Q.15. A characteristic of drupe is

  1. fleshy seed coat
  2. stony pericarp
  3. stony mesocarp
  4. stony endocarp

Q.16. Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is know as

  1. TCA pathway
  2. Glycolysis
  3. Hms pathway
  4. Glycolysis

Q.17. End product of glycolysis is

  1. acetyl Coenzyme A
  2. PEP
  3. pyruvate
  4. OAA

Q.18. Respiratory enzymes are located in

  1. mitochondrial matrix
  2. Cristae
  3. perimitochondrial space
  4. outer membrane

Q.19. Respiratory quotient of carbohydrates is

  1. 0.9
  2. 1.2
  3. 1
  4. 0

Q.20. One molecule of glucose yields ___ ATP molecules in aerobic respiration.

  1. 2
  2. 16
  3. 38
  4. 42

Q.21. When one glucose molecule is completely oxidised, it changes:

  1. 36 ADP molecules into 36 ATP molecules
  2. 38 ADP molecules into 38 ATP molecules
  3. 30 ADP molecules into 30 ATP molecules
  4. 32 ADP molecules into 32 ATP molecules

Q.22. Most of the energy of the carbohydrates is released by oxidation when

  1. Pyruvic acid is converted into CO2 and H2O
  2. Pyruvic acid is converted into acetyl Co-A
  3. Sugar is converted into pyruvic acid
  4. Glucose is converted into alcohol and CO2

Q.23. Acetyl CoA combine with oxalo-acetate in presence of condensing enzyme citrate synthase to form 6-C compound called

  1. Malic acid
  2. Tartaric acid
  3. Pyruvic acid
  4. Citric acid

Q.24. Number of oxygen atoms required for aerobic oxidation of one pyruvate

  1. 10
  2. 8
  3. 5
  4. 12

Q.25. Most of the enzymes of the TCA cycle are present in

  1. Intermembrane space of mitochondria
  2. Mitochondrial matrix
  3. Inner membrane of mitochondria
  4. Cytoplasm
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