Gce Model Questions Vol1 2025 Geography Question 45
Practice objective / multiple choice question 45 from the 2025 Gce Model Questions Vol1 Geography examination.
A soil layer 0.5 m deep has a bulk density of 1.4 g cm⁻³ and a particle density of 2.65 g cm⁻³. Assume that field capacity equals the total pore volume (i.e., water fills all pores). The wilting‑point water content is 50 % of field capacity.\n(a) Calculate the amount of water (in mm) that can be extracted by plants before wilting.\n(b) If a farmer adds 30 mm of irrigation water to soil that is at wilting point, what is the new water content expressed as a percentage of field capacity? (Give the percentage to one decimal place.)
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This is Gce Model Questions Vol1 2025 Geography Question 45. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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