Igcse Model Questions Vol1 2020 Biology Question 15

Practice objective / multiple choice question 15 from the 2020 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2020 Biology Objective / Multiple Choice Hard Difficulty
Question 15 IGCSE_MODEL_QUESTIONS_VOL1 • 2020 • BIOLOGY • objective

In a grassland ecosystem the total primary production is \(5000\ \text{MJ}\) per year. Only \(10\%\) of this energy is stored as biomass by the primary producers. Herbivores convert \(20\%\) of the biomass they consume into their own biomass, and carnivores convert \(10\%\) of the herbivore biomass they consume. Of the total carnivore biomass, top predators obtain \(60\%\) while secondary carnivores obtain the remaining \(40\%\). Calculate (a) the total energy available to all carnivores per year (in MJ) and (b) the energy obtained by top predators per year (in MJ).

Answer Options

A. a) 100 MJ, b) 60 MJ]
B. a) 10 MJ, b) 4 MJ]
Correct Answer C. a) 10 MJ, b) 6 MJ
D. a) 8 MJ, b) 4.8 MJ]
Correct Answer
C
Correct Option:
a) 10 MJ, b) 6 MJ

About This Question

This is Igcse Model Questions Vol1 2020 Biology Question 15. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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