Igcse Model Questions Vol1 2021 Biology Question 1
Practice objective / multiple choice question 1 from the 2021 Igcse Model Questions Vol1 Biology examination.
A typical leaf loses water at a rate of 0.5 g per hour per unit stomatal density when its stomata are open. The leaf keeps its stomata open for 12 hours each day. A desert cactus has only one‑third the stomatal density of the typical leaf and opens its stomata only at night for 6 hours. Assuming the water‑loss rate per unit stomatal density is the same for both plants, what fraction of the water lost by the typical leaf is lost by the cactus in one day? Express your answer as a common fraction.
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About This Question
This is Igcse Model Questions Vol1 2021 Biology Question 1. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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