Cooper's Trophic Levels

Multiple Choice

Which organism do the owl and the weasel compete for in the food web?

• Hawk
• Spider
• Grasshopper
• Shrew

Multiple Choice

What would happen to the bird if the green fish died out?

• the bird population would grow

• the bird population would die out

• the smaller fish will die out

Fill in the Blanks

Multiple Choice

What is included in the first trophic level and why are they critical to being the first link?

• Herbivores, as they are the main consumers in the ecosystem.
• Primary producers, which are critical as they create their own food.

• Carnivores, since they are the top predators in the food chain.
• Decomposers, because they break down dead organic matter.

Dropdown

The second trophic level includes the herbivores. They are also known as ​

Select answer

.

Multiple Choice

READ CAREFULLY!

Which of the following trophic levels contains organisms that consume only plant materials?

• Secondary consumers (carnivores)
• Decomposers (fungi and bacteria)
• Producers (plants)
• Primary consumers (herbivores)

Multiple Choice

This question is confusing! Look CAREFULLY at the image. What trophic level is the PRIMARY consumer?

• 1st

• 2nd

• 3rd

• 4th

Labelling

Energy is lost as you go up in trophic levels. 10 % at each step. 

Now its your turn!

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100 energy units

10 energy units

1 energy unit

1,000 energy units

Labelling

Name the organism in each trophic level.

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Rabbit

Snake

Grass

Hawk

Labelling

Label your energy units.

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2,000 energy units

200 energy units

20 energy units

20,000 energy units

Multiple Choice

A student makes a model of an energy pyramid by stacking cups as shown. The producers are represented by the bottom level of four cups.

How much energy will be obtained at the top of this energy pyramid if the cups representing the primary consumers have 37,000 kilojoules (kJ) of energy?

• 37,000 kJ

• 3,700 kJ

• 370 kJ

• 3.7 kJ