Welcome to the Quiz!

This quiz contains 14 questions from a mix of 1 subtopics.

What does each bar in a pyramid of biomass show?

The energy within all of organisms in that trophic level

The biomass of all organisms in that trophic level

The number of organisms in that trophic level

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Diagram showing a pyramid of biomass with arrows indicating energy transfer between trophic levels.

Roughly what proportion of energy biomass is transferred between trophic levels?

1%

10%

90%

100%

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Which of these is NOT true when drawing pyramids of biomass?

Bars must be touching

The primary consumer is at the bottom

Bars must be equally spaced around the midpoint

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Illustration of a lion representing an apex predator in a pyramid of biomass.

Where are apex predators on a pyramid of biomass?

They are not shown on the pyramid 

At the bottom of the pyramid 

At the top of the pyramid 

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What does the biomass of an organism refer to?

The mass of food an organism ingests in its life

The mass of waste an organism excretes in its life

The mass of an organism

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The image above shows a pyramid of biomass. Which trophic level does the highlighted bar represent?

Primary consumers

Secondary consumers 

Decomposers

Producers

Apex predators

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Illustration of a pyramid of biomass with a highlighted bar representing a trophic level.

The image above shows a pyramid of biomass. Which trophic level does the highlighted bar represent?

Primary consumers

Secondary consumers 

Producers

Decomposers

Apex predators

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Illustration of a pyramid of biomass with a highlighted bar representing a specific trophic level.

The image above shows a pyramid of biomass. Which trophic level does the highlighted bar represent?

Producers

Apex predators

Primary consumers

Decomposers

Secondary consumers 

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Image showing a pyramid of biomass with highlighted trophic level bar.

The image above shows a pyramid of biomass. Which trophic level does the highlighted bar represent?

Primary consumers

Secondary consumers 

Apex predators

Producers

Decomposers

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Which of the groups below is NOT shown on a pyramid of biomass?

Secondary consumers 

Producers

Apex predators

Decomposers

Primary consumers

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Give three reasons why only ~10% of the energy & biomass is passed on at each stage in a food chain? 

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3

Illustration showing biomass transfer between trophic levels with a flower, rabbit, snake, and owl with respective weights.

Calculate the efficiency of biomass transfer between trophic level 2, and trophic level 3. Round your answer to 1 decimal place.

12.1%

13.0%

10.5%

11.1%

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Diagram showing biomass transfer from a plant to a rabbit, then to a snake, and finally to an owl with respective weights of 3675 kg, 350 kg, 34 kg, and 4.2 kg.

Calculate the efficiency of biomass transfer between trophic level 3, and trophic level 4. Round your answer to 1 decimal place.

12.4

%

%

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Illustration showing biomass transfer between trophic levels with a flower, rabbit, snake, and owl, indicating weights of 5100 kg, 490 kg, 48 kg, and 5 kg respectively.

Calculate the efficiency of biomass transfer between trophic level 1, and trophic level 2. Round your answer to 1 decimal place.

9.6

%

%

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