Igcse Model Questions Vol1 2018 Biology Question 21
Practice objective / multiple choice question 21 from the 2018 Igcse Model Questions Vol1 Biology examination.
A desert plant reduces its leaf surface area by 40 % and its stomatal density by 30 % compared with a related mesic plant. The mesic plant loses water at a rate of \(5\) mg cm\(^{-2}\) h\(^{-1}\) under the same conditions. (i) Assuming water loss is directly proportional to leaf area and stomatal density, calculate the water‑loss rate of the desert plant. (ii) The desert plant also has a cuticle that reduces the remaining loss by an additional 15 %. Determine the overall percentage reduction in water loss relative to the mesic plant, rounded to the nearest whole percent.
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About This Question
This is Igcse Model Questions Vol1 2018 Biology Question 21. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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