Neco 2022 Biology Question 26

Practice objective / multiple choice question 26 from the 2022 Neco Biology examination.

Neco 2022 Biology Objective / Multiple Choice Hard Difficulty
Question 26 NECO • 2022 • BIOLOGY • objective

Data from five 1\,m\^2 quadrat samples in a lake give plankton biomass (g\,m\^{-2}) as 12, 15, 9, 14 and 11. (i) Calculate the mean biomass and the 95\% confidence interval for the mean assuming a normal distribution (use \( t_{0.05,4}=2.776 \)). (ii) If each gram of plankton biomass yields 5\,kcal of energy and the trophic transfer efficiencies are 10\% from plankton to zooplankton and 20\% from zooplankton to small fish, estimate the total energy transferred from plankton to small fish per square metre. (iii) Is this estimated energy transfer significantly above a threshold of 200\,kcal\,m\^{-2}? State your conclusion.

Answer Options

Correct Answer A. 1.22 kcal m⁻²; not above the 200 kcal m⁻² threshold
B. 1.22 kcal m⁻²; above the 200 kcal m⁻² threshold
C. 0.85 kcal m⁻²; not above the 200 kcal m⁻² threshold
D. 2.05 kcal m⁻²; not above the 200 kcal m⁻² threshold
Correct Answer
A
Correct Option:
1.22 kcal m⁻²; not above the 200 kcal m⁻² threshold

About This Question

This is Neco 2022 Biology Question 26. It is one of the objective questions from the 2022 Neco Biology examination.

Difficulty level: Hard .

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