Tag: respiration-plants

Questions Related to respiration-plants

Anaerobic respiration in plants yields lactic acid.

biology respiration do plants breathe? plant respiration respiration-plants

  1. True

  2. False

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Correct Option: B

Respiratory quotient (R. Q.) is defined as the

biology respiration and energy transfer respiratory quotient-basic respiration-plants respiratory quotient

  1. Vol. of $O _{2}$ / vol. of $CO _{2}$

  2. Vol. of $CO _{2}$ / vol. of $O _{2}$

  3. Vol. of $O _{2}$ / vol. of $N _{2}$

  4. Vol. of $N _{2}$ / vol. of $CO _{2}$

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Correct Option: B
Explanation:

The volume of carbon dioxide released and oxygen consumed in the process of respiration is called as respiratory quotient or R.Q of that substrate.

R.Q. stands for

biology respiration and energy transfer respiratory quotient-basic respiration-plants respiratory quotient

  1. Resistance coefficient

  2. Replicase concentration

  3. Respiratory quotient

  4. Reticular concentration

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Correct Option: C
Explanation:

Respiratory quotient (RQ) is the ratio of the volume of carbon dioxide released to the volume of oxygen taken in respiration in the given period of time at standard temperature and pressure. 

RQ = CO2 eliminated / O2 consumed

Name of the substance Respiratory Quotient
Carbohydrates 1
Proteins 0.8 - 0.9
Triolein 0.7
Tripalmitin (Fat) 0.7
Malic acid 1.33
Tartaric acid 1.6
Oxalic acid 4.0

Thus, the correct answer is option C. 


Respiratory quotient is expressed as which of the following equations?

biology respiration and energy transfer respiratory quotient-basic respiration-plants respiratory quotient

  1. $O _2/CO _2$

  2. $CO _2/O _2$

  3. $O _2/H _2O$

  4. $CO _2 - O _2$

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Correct Option: B
Explanation:

During aerobic respiration, $O _2$ is consumed and $CO _2$ is released. The ratio of the volume of $CO _2$ evolved to the volume of $O _2$ consumed in respiration is called the respiratory quotient (R.Q) or respiratory ratio.  Thus the following expression is used to calculate the value of R.Q.
RQ= volume of $CO _2$ evolved/ volume of $O _2$ consumed.