Gce Model Questions Vol1 2022 Biology Question 27

Practice objective / multiple choice question 27 from the 2022 Gce Model Questions Vol1 Biology examination.

Gce Model Questions Vol1 2022 Biology Objective / Multiple Choice Medium Difficulty
Question 27 GCE_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • objective

A plant's xylem contains 200 identical vessels. Each vessel is a straight tube of length \(0.5\) m and internal radius \(20\) µm. The viscosity of the sap is \(1.2\times10^{-3}\) Pa·s and the pressure difference between the roots and the leaves is \(0.2\) MPa. Using the Hagen-Poiseuille equation \(Q = \frac{\pi r^{4}\Delta P}{8\eta L}\) for a single vessel, calculate the total volumetric flow rate of sap through all vessels in microlitres per minute (µL·min\(^{-1}\)).

Answer Options

Correct Answer A. 2.5\times10^{2} \text{ µL·min}^{-1}
B. 3.0\times10^{2} \text{ µL·min}^{-1}
C. 5.0\times10^{2} \text{ µL·min}^{-1}
D. 1.2\times10^{2} \text{ µL·min}^{-1}
Correct Answer
A
Correct Option:
2.5\times10^{2} \text{ µL·min}^{-1}

About This Question

This is Gce Model Questions Vol1 2022 Biology Question 27. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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