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[IMPORTANT]20/5/2010 Biology Paper 6

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Vin:

See there is one type of bubble method where u count the number of bubbles produced by an aquatic plant by using a potometer ..

Ivo:

--- Quote from: ~VIN1094~ on May 19, 2010, 11:33:03 pm ---What is figure 1.1 about ??

as far as i can comprehend ..

1.take same species of plants
2.same amount of volume of water with dye
3.Same temperature
4.start the experiment at the same time
5.cover with plastc to avoid evaporation
6.repeat the experiment

..

--- End quote ---


Here is Fig...

By the way, in the mark scheme it says ""method of measuring uptake (of dye/water), either by bubble method or lossof coloured solution/water), so what is bubbble method?

Ivo:

--- Quote from: ~VIN1094~ on May 19, 2010, 11:35:45 pm ---See there is one type of bubble method where u count the number of bubbles produced by an aquatic plant by using a potometer ..

--- End quote ---

It's about dye moving up tube or something:

http://www.practicalbiology.org/areas/advanced/exchange-of-materials/transpiration-in-plants/measuring-rate-of-water-uptake-by-a-plant-shoot-using-a-potometer,62,EXP.html

Ivo:

--- Quote from: Ivo on May 19, 2010, 11:37:28 pm ---It's about dye moving up tube or something:

http://www.practicalbiology.org/areas/advanced/exchange-of-materials/transpiration-in-plants/measuring-rate-of-water-uptake-by-a-plant-shoot-using-a-potometer,62,EXP.html


--- End quote ---

This is it.  Measuring bubble moved from starting position.

Do you think that's right?

NidZ- Hero:
can any1 plz help me wid this
"Describe the processes involved in the changes of directional growth of the shoot of the
seedling."

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