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What is a Photometer? - Biology

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Question

What is a photometer? 

Solution

 

Potometer is a device that measures the rate of water intake by a plant. This water intake is almost equal to the water lost through transpiration. Potometers do not measure the water lost due to transpiration but measure the water uptake by the shoot.

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Measurement of Transpiration
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Chapter 5: Transpiration - Long answer type [Page 66]

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Selina Concise Biology [English] Class 10 ICSE
Chapter 5 Transpiration
Long answer type | Q 4 | Page 66

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What is photometer? What is its use?

Given below is the diagram of an apparatus used to study a particular phenomenon in plants:

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After few hours CaCl2 vials were taken out and weighed again. Will you expect any difference in weight? If so, give reason. 


Write any two limitations of using a Ganong's potometer to demonstrate the uptake of water.


The apparatus used to measure the rate of transpiration is ______.


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  Column A   Column B
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