Ijmb Model Questions Vol1 2023 Biology Question 5
Practice essay / theory question 5 from the 2023 Ijmb Model Questions Vol1 Biology examination. This question covers Transport .
A tropical shrub was studied under two contrasting atmospheric conditions. The leaf temperature, relative humidity and stomatal conductance (gₛ) measured for each condition are given below. Condition A: leaf temperature = 25 °C, relative humidity = 40 %, gₛ = 0.30 mol m⁻² s⁻¹. Condition B: leaf temperature = 30 °C, relative humidity = 70 %, gₛ = 0.15 mol m⁻² s⁻¹. The saturation vapour pressure (eₛ) at 25 °C is 3.17 kPa and at 30 °C is 4.24 kPa. Transpiration rate (E) can be approximated by the equation E = gₛ × VPD, where VPD (kPa) = eₛ – eₐ and eₐ is the actual vapour pressure (eₐ = RH × eₛ, with RH expressed as a decimal). Answer the following:
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This is Ijmb Model Questions Vol1 2023 Biology Question 5. It is one of the essay questions from the 2023 Ijmb Model Questions Vol1 Biology examination.
The question covers Transport .
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