Gce Model Questions Vol1 2024 Biology Question 48
Practice objective / multiple choice question 48 from the 2024 Gce Model Questions Vol1 Biology examination.
A desert cactus has a stem fresh weight \(W\) (kg). Its stem surface area is \(0.02\,\text{m}^2\) per kilogram of fresh weight. Transpiration loss occurs at a rate of \(5\,\text{g H}_2\text{O}\) m^{-2} kPa^{-1} h^{-1} multiplied by the ambient vapour‑pressure deficit of \(2\) kPa. The cactus can store water equal to 5 kg. Assuming water loss occurs only by transpiration, determine the maximum fresh weight \(W\) that will allow the cactus to survive a 15‑day drought under these conditions.
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This is Gce Model Questions Vol1 2024 Biology Question 48. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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