Waec Model Questions Vol1 2020 Biology Question 24

Practice objective / multiple choice question 24 from the 2020 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2020 Biology Objective / Multiple Choice Hard Difficulty
Question 24 WAEC_MODEL_QUESTIONS_VOL1 • 2020 • BIOLOGY • objective

Two terrestrial ecosystems, A and B, have different net primary productivity (NPP). Ecosystem A has an NPP of 2000 g C m⁻² yr⁻¹, while ecosystem B has an NPP of 1500 g C m⁻² yr⁻¹. Energy (or biomass) transfer efficiency between successive trophic levels is 10 %. Herbivores consume 70 % of the available plant biomass, and carnivores consume 25 % of the herbivore biomass. Calculate the amount of carnivore biomass (in g C m⁻² yr⁻¹) that can be supported in each ecosystem and state which ecosystem supports the larger carnivore biomass.

Answer Options

A. Ecosystem A: 14 g C m⁻² yr⁻¹; Ecosystem B: 10.5 g C m⁻² yr⁻¹; Ecosystem A supports the larger carnivore biomass
B. Ecosystem A: 3.5 g C m⁻² yr⁻¹; Ecosystem B: 2.6 g C m⁻² yr⁻¹; Ecosystem B supports the larger carnivore biomass
Correct Answer C. Ecosystem A: 3.5 g C m⁻² yr⁻¹; Ecosystem B: 2.6 g C m⁻² yr⁻¹; Ecosystem A supports the larger carnivore biomass
D. Ecosystem A: 7.0 g C m⁻² yr⁻¹; Ecosystem B: 5.3 g C m⁻² yr⁻¹; Ecosystem A supports the larger carnivore biomass
Correct Answer
C
Correct Option:
Ecosystem A: 3.5 g C m⁻² yr⁻¹; Ecosystem B: 2.6 g C m⁻² yr⁻¹; Ecosystem A supports the larger carnivore biomass

About This Question

This is Waec Model Questions Vol1 2020 Biology Question 24. It is a objective / multiple choice question from the 2020 Waec Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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