Biodiversity is the range of different living organisms (species) that live in a place.

A gene bank is a store of genetic material for future use. For example, collections of seeds, or stores of plant and animal cells.

Genetic material is made of a chemical substance called DNA (deoxyribonucleic acid).

Conservation is the process of protecting biodiversity and the environment.

The gene pool is the range of DNA in a species. The larger the gene pool, the more easily species can adapt to changes to their habitat.

Conserving biodiversity

Science

Interdependence within ecosystems

Pyramids of number

Pyramids of biomass

Plants are adapted for their environment

Animals are adapted for their environment

Ecological sampling of living organisms

Ecological sampling using a quadrat

Pupils will learn about biotic and abiotic components of an ecosystem, measuring population size, interdependence and competition in ecosystems, how changes in biotic and abiotic factors affect communities, the cycling of carbon and water, and the role of microorganisms in cycling materials through ecosystems.

Pupils learnt about interdependence in ecosystems, covering food webs and food chains along with predator-prey relationships. The effect of the use of pesticides on organisms such as pollinating insects and top predators through bioaccumulation.

This unit examines environmental changes and their impact on species' survival and adaptation, potentially leading to extinction. It also develops skills for interpreting data and observations, evaluating errors, and using SI units and IUPAC chemical nomenclature in scientific contexts.

Biodiversity

how food is transferred from one organism to another

The process of protecting biodiversity and the environment is called {{}}.

a gardener's store of seeds for their allotment

Which of the following are examples of gene banks?

the genetic variation (differences) in a species.

how similar the individual organisms are.

how many different features an individual organism has.

The gene pool of a species determines ...

In which of the following habitats is there likely to be the most biodiversity?

The animals were well adapted to their habitats.

Small numbers of individuals meant that there was plenty of food to eat.

As the numbers reduced, the gene pool was too small to adapt to habitat change.

The Tasmanian tiger became extinct less than 100 years ago because of the impact of humans on their habitat. 
Which of the following reasons might explain why the animal became extinct?

True or false? An artic habitat has a high level of biodiversity.

changing a grassland into a playing field

conserving a habitat as part of a nature reserve

Which of the following would be likely to **decrease** biodiversity?

Groups of organisms that are able to reproduce with each other to produce offspring that are also able to reproduce are called a {{}}.

Which of the following organisms could be sampled using this piece of sampling equipment?

to help make sure that organisms drop into the trap

Match the following features of a pitfall trap to how the feature helps to sample organisms.

What might a sweep net be used to sample?

Exit Quiz

What does an arrow in a food chain show?