Waec Model Questions Vol1 2020 Biology Question 28
Practice objective / multiple choice question 28 from the 2020 Waec Model Questions Vol1 Biology examination.
In a leaf, the average distance from a mesophyll cell to the nearest stomata is 30 µm. The diffusion coefficient of CO₂ in air is 1.6 × 10⁻⁵ cm² s⁻¹ and the concentration gradient across this distance is 0.04 mol cm⁻³. Estimate the diffusive flux J (in mol cm⁻² s⁻¹) using Fick's first law J = -D ΔC/Δx. Give the magnitude to two significant figures.
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This is Waec Model Questions Vol1 2020 Biology Question 28. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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