Representing Food Chains

This lesson looks at representing food chains as pyramids of numbers and pyramids of biomass.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.By what process do plants make their own food?

1/8

Q2.What is the difference between predators and prey?

2/8

Q3.What is a secondary consumer?

3/8

Q4.What do the arrows in a food chain show?

4/8

Q5.What is the name given to a stage in a food chain?

5/8

Q6.What is the name of an organism that only eats meat?

6/8

Q7.This a food chain: Turnip -> Maggots -> Rove Beetle -> Blackbird. Which living organism in the food chain is the primary consumer?

7/8

Q8.This a food chain: Turnip -> Maggots -> Rove Beetle -> Blackbird. If the population of blackbirds decreased, what would be the effect on the population of rove beetles?

8/8

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.By what process do plants make their own food?

1/8

Q2.What is the difference between predators and prey?

2/8

Q3.What is a secondary consumer?

3/8

Q4.What do the arrows in a food chain show?

4/8

Q5.What is the name given to a stage in a food chain?

5/8

Q6.What is the name of an organism that only eats meat?

6/8

Q7.This a food chain: Turnip -> Maggots -> Rove Beetle -> Blackbird. Which living organism in the food chain is the primary consumer?

7/8

Q8.This a food chain: Turnip -> Maggots -> Rove Beetle -> Blackbird. If the population of blackbirds decreased, what would be the effect on the population of rove beetles?

8/8

Video

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Representing Food Chains

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Name the organism in a food chain that goes on the bottom of a pyramid of numbers.

1/7

Q2.Select the correct pyramid of numbers for the following food chain: Oak trees -> Winter Moth Caterpillar -> Great Tits -> Sparrowhawks

2/7

Q3.Select the correct pyramid of biomass for the following food chain: Oak trees -> Winter Moth Caterpillar -> Great Tits -> Sparrowhawks

3/7

Q4.If the key of a pyramid of numbers states that 10 organisms equals 1 square, how many squares would 100 organisms be?

4/7

Q5.What is the definition of biomass?

5/7

Q6.How is energy transferred from organisms at one trophic level in a food chain to organism at the next?

6/7

Q7.How is energy lost to the surroundings at each trophic level in a food chain?

7/7

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Representing Food Chains

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Name the organism in a food chain that goes on the bottom of a pyramid of numbers.

1/7

Q2.Select the correct pyramid of numbers for the following food chain: Oak trees -> Winter Moth Caterpillar -> Great Tits -> Sparrowhawks

2/7

Q3.Select the correct pyramid of biomass for the following food chain: Oak trees -> Winter Moth Caterpillar -> Great Tits -> Sparrowhawks

3/7

Q4.If the key of a pyramid of numbers states that 10 organisms equals 1 square, how many squares would 100 organisms be?

4/7

Q5.What is the definition of biomass?

5/7

Q6.How is energy transferred from organisms at one trophic level in a food chain to organism at the next?

6/7

Q7.How is energy lost to the surroundings at each trophic level in a food chain?

7/7

Lesson summary: Representing Food Chains

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