Gce Model Questions Vol1 2021 Biology Question 31
Practice objective / multiple choice question 31 from the 2021 Gce Model Questions Vol1 Biology examination.
A desert shrub has two leaf types. Type A leaves have a stomatal density of \(150\) stomata mm\(^{-2}\) and a leaf area of \(30\) mm\(^2\). Each stomata loses \(0.02\) µmol H\(_2\)O h\(^{-1}\). Type B leaves have a stomatal density of \(30\) stomata mm\(^{-2}\), leaf area \(120\) mm\(^2\), and each stomata loses \(0.015\) µmol H\(_2\)O h\(^{-1}\). Type B also possesses a waxy cuticle that reduces its total water loss by \(40\%\) and a nocturnal CAM pathway that reduces the remaining loss by a further \(25\%\). Which leaf type loses less total water per hour, and what is the final water loss of that type (in µmol h\(^{-1}\))?
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This is Gce Model Questions Vol1 2021 Biology Question 31. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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