Neco 2023 Biology Question 35

Practice objective / multiple choice question 35 from the 2023 Neco Biology examination.

Neco 2023 Biology Objective / Multiple Choice Hard Difficulty
Question 35 NECO • 2023 • BIOLOGY • objective

A pond sample contains 200 individuals distributed among five trophic groups as follows: algae 80, zooplankton 50, insect larvae 30, small fish 20 and top‑predator fish 20. (a) Calculate the Shannon diversity index \(H' = -\sum p_i \ln p_i\) for this community (give your answer to two decimal places). (b) If the primary production provides 1000\,units of energy and only 10\% of the energy is transferred from one trophic level to the next, what fraction of the original energy is available to the top‑predator fish?

Answer Options

Correct Answer A. H' ≈ 1.46; energy available to top‑predator = 0.01 % of primary production (0.1 units).
B. H' ≈ 1.30; energy available to top‑predator = 0.1 % of primary production (1 units).
C. H' ≈ 1.60; energy available to top‑predator = 1 % of primary production (10 units).
D. H' ≈ 1.80; energy available to top‑predator = 0.001 % of primary production (0.01 units).
Correct Answer
A
Correct Option:
H' ≈ 1.46; energy available to top‑predator = 0.01 % of primary production (0.1 units).

About This Question

This is Neco 2023 Biology Question 35. It is one of the objective questions from the 2023 Neco Biology examination.

Difficulty level: Hard .

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