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Question

Rate of respiration is measured using

A
speedometer
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B
manometer
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C
respirometer
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D
barometer
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Solution

The correct option is C respirometer
Respirometer is an instrument used for measuring rate of respiration. The apparatus consists of a graduated tube attached at right angles to a bulbous respiratory chamber in its upper end. Desired plant material whose rate of respiration is to be determined is placed in the respiratory chamber.

Speed is measured using a speedometer.

Manometer is used to measure pressure of liquids or gases.

Barometer is used to measure atmospheric pressure.

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