Waec Model Questions Vol1 2022 Agricultural Science Question 50
Practice objective / multiple choice question 50 from the 2022 Waec Model Questions Vol1 Agricultural Science examination.
A tomato field has 10 000 plants. The disease basic reproduction number (R₀) is 1.8 per week without control. Planting a resistant variety reduces R₀ by 30 %. If 60 % of the field is planted with the resistant variety and the remaining 40 % is susceptible, compute the effective reproduction number (Rₑ). Starting with 10 infected plants, estimate the number of infected plants after 3 weeks using a discrete‑generation model (new infections each week = current infections × Rₑ). Round the final answer down to the nearest whole plant.
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About This Question
This is Waec Model Questions Vol1 2022 Agricultural Science Question 50. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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