Waec Model Questions Vol1 2024 Agricultural Science Question 19
Practice objective / multiple choice question 19 from the 2024 Waec Model Questions Vol1 Agricultural Science examination.
A wheat field is affected by a rust fungus whose infection cycle lasts 10 days from spore germination to production of new spores. A fungicide applied remains effective for exactly 7 days. The farmer can only spray on days that are multiples of 3 (i.e., day 3, 6, 9, 12, …) counted from the first appearance of spores. (i) How many sprays are required to prevent any new spore production during a 30‑day period, assuming the first spore appearance occurs on day 0? (ii) On which days should the farmer apply the sprays to achieve this protection? Provide the days as numbers.
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About This Question
This is Waec Model Questions Vol1 2024 Agricultural Science Question 19. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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