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Help with biology as paper 2 2019 paper ocr

I need help, ive tried looking on GOOGLE but the mark scheme only shows the answer, and not the process

The internal diameter of the capillary tubing was 0.7

mean rate of transpirarion mm3min-1 with:
an electric fan; 10.81
in still air and lower leaf surface covered with petroleum jelly; 2.62
‘calculate the mean rate of transpiration for leafy shoot still in air


sadly there isnt a walkthrough of paper 2 as level 2019 ocr :frown:
Original post by conkillers
I need help, ive tried looking on GOOGLE but the mark scheme only shows the answer, and not the process

The internal diameter of the capillary tubing was 0.7

mean rate of transpirarion mm3min-1 with:
an electric fan; 10.81
in still air and lower leaf surface covered with petroleum jelly; 2.62
‘calculate the mean rate of transpiration for leafy shoot still in air


sadly there isnt a walkthrough of paper 2 as level 2019 ocr :frown:

Is there another part to the question? You would need a distance moved over a given time period. If this is part a (iii), the information needed may be in a (i), OCR tend to do this. You can then use the volume of a cylinder to work it out. The equation should be pi x 0.35^2 x (distance travelled/time). Hope this helps!

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