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PART - 2 - Unit IV : CH - 12 Respiration in Plants — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYPART - 2 - Unit IV : CH - 12 Respiration in Plants3 Marks
Question
(i) In aerobic respiration the respiratory coefficient is infinite. Please explain.
(ii) Define the following: (a) Floating respiration (b) Protoplasmic respiration (c) External respiration (d) Internal respiration.
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Answer

(i) In anaerobic respiration, CO2 is released but O2 is not absorbed. Therefore, the respiration coefficient is infinite.
C6H12O6 → 2C2H2OH + 2CO2 + Energy
R.Q. $\frac{2 CO _2}{\text { Zero }{ }_2}=$ Infinity $(\infty)$
(ii) (a) Floating respiration: The respiration in
which carbohydrates and fats are used as respiratory substances, called floating respiration.
(b) Protoplasmic respiration: When protein is used as a respiratory substance, then it is called protoplasmic respiration.
(c) External respiration : It involves an organism and its environment. Exchange of respiratory gases (O2 and CO2) takes place between them.
(d) Internal respiration : This is also called tissue respiration. In this exchange of respiratory gases between the tissue and the extracellular environment takes place.

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