Waec Model Questions Vol1 2018 Biology Question 31
Practice objective / multiple choice question 31 from the 2018 Waec Model Questions Vol1 Biology examination.
In a desert environment the average monthly rainfall is 25 mm and the evapotranspiration loss is 150 mm. Two plant species are compared: (i) a cactus that can store water in its stem at a capacity of 5 L per kilogram of tissue and has a dry mass of 10 kg; (ii) a deep‑rooted shrub whose roots occupy 2 m³ of soil where the available water content is 0.2 L per m³. If the plant loses water at a constant rate of 0.3 L per day, which species can maintain its water balance over a 30‑day period? State the species name.
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This is Waec Model Questions Vol1 2018 Biology Question 31. It is one of the objective questions from the 2018 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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