Waec Model Questions Vol1 2020 Agricultural Science Question 18
Practice objective / multiple choice question 18 from the 2020 Waec Model Questions Vol1 Agricultural Science examination.
A wheat fungal disease caused by *Puccinia graminis* proceeds through three stages: spore germination (2 days at 20 °C), hyphal growth (3 days at 20 °C) and sporulation (4 days at 20 °C). The rate of each stage doubles for every 5 °C rise above 20 °C. If the daily temperature for the next week is a constant 25 °C, on which day after the initial infection will the first new spores be released?
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About This Question
This is Waec Model Questions Vol1 2020 Agricultural Science Question 18. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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