A potometer with a leafy shoot weighed 18.9g initially and weighed 17.9g after one hour. From this it follow that
the shoot absorbed 1g of water per hour
1g of water per hour evaporates from the potometer
the shoot lost 1g of water per hour
the potometer water receded at the rate of 1g per hour
the shoot was respiring and lost weight at rate of 1g per hour
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Discussions (29)
The phenomenon above is called transpiration,this is a process whereby water evaporates from the surface of plants, in this case the shoot..potometer is used to measure the rate of transpiration
this simply means that 1g of H2O evaporaters per hour,,since a potometer has to do with transpirarion..the term evaporation is vital.
I disagree with u @Best baby Water goes out(evaporates )from the shoot n not from the potometer...
Talking of measurement I believe we all knw dat water is not measured in gram but in mls or litre ?
The correct answer is:
C. the shoot lost 1g of water per hour
The decrease in weight from 18.9g to 17.9g indicates that the shoot lost 1g of water over the course of one hour. This loss of water could be due to transpiration, the process by which water evaporates from the leaves of plants.
since someone said the term evaporation is useful then the correct answer should be B: 1g of water per hour evaporates from the potometer
