need biology hsc help fast!

[tara04]

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hey! um the biology forum really not goin newhere need help fast!

first hnad investigation worth 30%

Determine how a plant adaptation affects the rate of transpiration.

thort bout changin direction leaves grow covering with sealed bag...but at home how do i measure the tiny amount of transpiration?

[An-Nhien]

hm im not so sure but mayb u could put ur plant in a pot and put it on a sensitive weight scale.

You should measure the weight beforehand with water in the pot and set a time limit to remeasure the weight afterwards.

Use this to compare the water/weight lost (through transpiration) and test watever methods ur gna use.

Just make sure u control the other conditions such as room temperature and other stuff.

Hope it works^^

[jessica_lee]

i think what we did for this was we grew the plant with a plastic bag over it and kept it constantly in light, and gave it a specific amount of water every day/two days depending on the requirements, and measured the amount of condesation on the bag...

i don't know if that will work for you though...
hope it helps