Igcse Model Questions Vol1 2020 Biology Question 18
Practice objective / multiple choice question 18 from the 2020 Igcse Model Questions Vol1 Biology examination.
The volumetric flow rate of water through a plant's xylem can be approximated by \(R = k \frac{\Delta P}{L}\), where \(k = 5 \times 10^{-12}\,\text{m}^3\text{Pa}^{-1}\text{s}^{-1}\). In scenario A the pressure difference \(\Delta P\) is 0.3 MPa and the average vessel length \(L\) is 0.5 m. In scenario B the pressure difference is 0.4 MPa and the vessel length is 0.8 m. Assuming all other factors are equal, which scenario gives the higher flow rate and by what factor is it greater?
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This is Igcse Model Questions Vol1 2020 Biology Question 18. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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