Igcse Model Questions Vol1 2018 Biology Question 38

Practice objective / multiple choice question 38 from the 2018 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2018 Biology Objective / Multiple Choice Medium Difficulty
Question 38 IGCSE_MODEL_QUESTIONS_VOL1 • 2018 • BIOLOGY • objective

A plant cell has a solute potential of \(-0.3\) MPa and a pressure potential of \(+0.2\) MPa. The surrounding soil water potential is \(-0.5\) MPa. Calculate the cell's water potential, state the direction of water movement, and give the magnitude of the water‑potential difference driving the movement.

Answer Options

A. Cell \(\psi = -0.5\) MPa; water moves out of the cell; difference = 0.0 MPa
Correct Answer B. Cell \(\psi = -0.1\) MPa; water moves out of the cell; difference = 0.4 MPa
C. Cell \(\psi = -0.3\) MPa; water moves into the cell; difference = 0.2 MPa
D. Cell \(\psi = +0.1\) MPa; water moves into the cell; difference = 0.6 MPa
Correct Answer
B
Correct Option:
Cell \(\psi = -0.1\) MPa; water moves out of the cell; difference = 0.4 MPa

About This Question

This is Igcse Model Questions Vol1 2018 Biology Question 38. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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