Neco Model Questions Vol1 2019 Biology Question 39

Practice objective / multiple choice question 39 from the 2019 Neco Model Questions Vol1 Biology examination.

Neco Model Questions Vol1 2019 Biology Objective / Multiple Choice Hard Difficulty
Question 39 NECO_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • objective

In a lake ecosystem the net primary productivity of the phytoplankton is 800 g C m\(^{-2}\) yr\(^{-1}\). Only 10 % of this carbon is transferred to the primary‑consumer level. Each primary consumer requires 2 g C per day for maintenance. If the observed biomass of primary consumers is 50 g C m\(^{-2}\), determine whether the primary productivity can sustain this consumer biomass over a year. State your conclusion and the maximum number of primary‑consumer individuals that can be supported per square metre.

Answer Options

A. Yes; the productivity can sustain the biomass (approximately 0.11 consumer per m^2)
B. No; only about 0.05 consumer can be supported per m^2 (insufficient to sustain 50 g C m⁻²)
Correct Answer C. No; only about 0.11 consumer can be supported per m^2 (insufficient to sustain 50 g C m⁻²)
D. No; only about 0.20 consumer can be supported per m^2 (insufficient to sustain 50 g C m⁻²)
Correct Answer
C
Correct Option:
No; only about 0.11 consumer can be supported per m^2 (insufficient to sustain 50 g C m⁻²)

About This Question

This is Neco Model Questions Vol1 2019 Biology Question 39. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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