Gce Model Questions Vol1 2021 Agricultural Science Question 35
Practice objective / multiple choice question 35 from the 2021 Gce Model Questions Vol1 Agricultural Science examination.
Fish population in a lake follows the logistic growth model \( \frac{dN}{dt}= rN\left(1-\frac{N}{K}\right) \) where the intrinsic rate \( r = 0.4\ \text{yr}^{-1} \) and the carrying capacity \( K = 50\,000 \) fish. The lake is initially stocked with 20 000 fish. (a) Determine the maximum sustainable annual harvest \( H_{\max} \) (in fish per year). (b) If a constant harvest of \( H = 3\,000 \) fish per year is applied, calculate the equilibrium population size that will be maintained.
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This is Gce Model Questions Vol1 2021 Agricultural Science Question 35. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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