An animal that hunts and eats another animal.

An animal that is caught and eaten by another animal.

A group of organisms of the same type, in the same place, is called a population.

Predator-prey relationships

Science

Food chains

Adaptations of predators and prey

Food webs

Ecosystems and habitats

Pollination and human food security

Using chemicals in farming

Bioaccumulation

The importance of biodiversity

Pupils will move on to construct and interpret pyramids of number and biomass from food chains data. Pupils will learn about how plants and animals are adapted to survive and the impact of changes to the environment on biodiversity. The importance of biodiversity and the importance of gene banks. How to sample plant and animal populations to aid our understanding and monitoring of populations. 

In Y4 pupils learnt about their local environment and to recognise that environments can change. Pupils also explored examples of human impact (both positive and negative) on environments. Pupils looked at a variety of food chains to identify producers, predators and prey.

This unit explores the interdependence of organisms in ecosystems, including food webs and insect-pollinated crops. It examines how organisms interact with their environment and the impact of toxic materials. It also highlights the importance of biodiversity and preserving genetic material.

Ecosystems

A {{}} is the number of organisms of one type that lives in a given area.

can increase or decrease the size of a population

Births, deaths and migration can all impact the size of a population. Match the words with how they are most likely to change the size of a population.

In this food chain diagram, which organism is the predator of the cod?

There is lots of food available for the rabbits.

There has been a natural disaster, for example a flood.

The graph shows the size of a population of rabbits. Which of the following is most likely to explain the shape of the graph?

Which graph represents a predator-prey model?

The arctic fox population will decrease because there is less food to eat.

The arctic fox population will decrease because there is more food to eat.

The arctic fox population will increase because there is less food to eat.

The arctic fox population will increase because there is more food to eat.

Arctic foxes are predators of arctic hares. The population of arctic hares increases. What will happen to the population of arctic foxes and why?

A food chain diagram is an example of a {{}}. These help us to understand difficult things more simply.

Look at the food chain diagram. It shows four organisms. Match the organism with the word that describes its position in the food chain.

The arrows are facing the wrong direction.

The food chain shows us the size of the populations.

There are three organisms in the food chain.

There are three populations in the food chain.

There are three consumers in this food chain.

Look at the picture of this food chain diagram. Choose the correct statement.

wheat             mouse             snake

Predator-prey relationships

Lesson outcome