Waec Model Questions Vol1 2021 Biology Question 15

Practice objective / multiple choice question 15 from the 2021 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2021 Biology Objective / Multiple Choice Hard Difficulty
Question 15 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

A fish population in a lake follows the logistic growth model \(\frac{dN}{dt}=rN\left(1-\frac{N}{K}\right)\). The intrinsic growth rate is \(r=0.5\) yr⁻¹ and the carrying capacity is \(K=10\,000\) fish. A constant harvest of \(H\) fish per year is applied. Determine the maximum sustainable harvest rate (the maximum value of \(H\) that still allows a positive equilibrium) and give the equilibrium population size at this harvest.

Answer Options

A. Maximum sustainable harvest = 1500 fish per year; equilibrium population = 6000 fish
Correct Answer B. Maximum sustainable harvest = 1250 fish per year; equilibrium population = 5000 fish
C. Maximum sustainable harvest = 1300 fish per year; equilibrium population = 4500 fish
D. Maximum sustainable harvest = 1000 fish per year; equilibrium population = 4000 fish
Correct Answer
B
Correct Option:
Maximum sustainable harvest = 1250 fish per year; equilibrium population = 5000 fish

About This Question

This is Waec Model Questions Vol1 2021 Biology Question 15. It is a objective / multiple choice question from the 2021 Waec Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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