Gce Model Questions Vol1 2024 Agricultural Science Question 31
Practice objective / multiple choice question 31 from the 2024 Gce Model Questions Vol1 Agricultural Science examination.
Lake X supports a fish population that follows logistic growth \( \frac{dN}{dt}= rN\left(1-\frac{N}{K}\right) \) with intrinsic rate \( r = 0.5\ \text{yr}^{-1} \) and carrying capacity \( K = 20\,000 \) fish. The current annual harvest is 1 800 fish. (i) Determine the equilibrium population size under this harvest. (ii) The government reduces fishing effort by 20 %, so the harvest becomes 80 % of the previous level. Determine the new equilibrium population size and calculate the percentage increase in the population relative to the original equilibrium. Give your answer to one decimal place.
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This is Gce Model Questions Vol1 2024 Agricultural Science Question 31. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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