Respiration in Plants

Respiration in Plants

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Advanced Botany

Plant Growth and Development
Organisms and Populations
Ecosystem
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Environmental Issues
Microbes in Human Welfare
Strategies for Enhancement in Food Production
Molecular Basis of Inheritance
Principles of Inheritance and Variation
Sexual Reproduction in Flowering Plants
Reproduction in Organisms
The Living World
Respiration in Plants
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Transport in Plants
Cell Cycle and Cell Division
Cell-The Unit of Life
Anatomy of Flowering Plants
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Plant Kingdom
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  1. The three boxes in this diagram represents the three major biosynthetic pathways in aerobic respiration. Arrows represents net reactants or products.

    Arrows numbered 4, 8 and 12 can all be :








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    In the given diagram of aerobic respiration – pathway A is glycolysis, pathway B is Kreb’s cycle and pathway C is ETS, thus 4, 8 & 12 are ATP. ATP act as energy currency. The energy is trapped in form of ATP and it is broken down whenever and wherever it needs to be utilised.

    Correct Option: A

    In the given diagram of aerobic respiration – pathway A is glycolysis, pathway B is Kreb’s cycle and pathway C is ETS, thus 4, 8 & 12 are ATP. ATP act as energy currency. The energy is trapped in form of ATP and it is broken down whenever and wherever it needs to be utilised.

  1. Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?








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    Acetyl CoA is common to respiration mediated breakdown of fats, carbohydrates and proteins. Fats are broken down to fatty acid and glycerol and finally are degraded to acetyl Co - A. Protein first degraded by proteases to indiviual amino acids which are deaminated to pyruric acid and further decarboxylised to acetyl Co- A.

    Correct Option: C

    Acetyl CoA is common to respiration mediated breakdown of fats, carbohydrates and proteins. Fats are broken down to fatty acid and glycerol and finally are degraded to acetyl Co - A. Protein first degraded by proteases to indiviual amino acids which are deaminated to pyruric acid and further decarboxylised to acetyl Co- A.

  1. In Krebs cycle FAD participates as electron acceptor during the conversion of








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    In the conversion of succinyl Co A to succinic acid, energy liberated during hydrolysis of succinyl CoA is used in synthesis of GTP. For the conversion of alfaketoglutarate to succinyl CoA, NAD+ and CoA are required. Conversion of fumaric acid to malic acid involves simple hydration. FAD participates in conversion of succinic acid to fumaric acid.

    Correct Option: C

    In the conversion of succinyl Co A to succinic acid, energy liberated during hydrolysis of succinyl CoA is used in synthesis of GTP. For the conversion of alfaketoglutarate to succinyl CoA, NAD+ and CoA are required. Conversion of fumaric acid to malic acid involves simple hydration. FAD participates in conversion of succinic acid to fumaric acid.

  1. R.Q. is ratio of








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    Ratio of the volume of CO2 produced to the volume of O2 consumed in respiration over a period of time is known as respiratory quotient.

    Correct Option: B

    Ratio of the volume of CO2 produced to the volume of O2 consumed in respiration over a period of time is known as respiratory quotient.

  1. Apparatus to measure rate of respiration and R.Q. is








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    Respirometer is an instrument for measuring respiratory quotient as well as rate of respiration.

    Correct Option: C

    Respirometer is an instrument for measuring respiratory quotient as well as rate of respiration.