Non-indigenous Species Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what's on both sides.
  • Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is a non-indigenous (non-native) species?

A species that people have moved to a place where it does not live naturally.

What makes a non-indigenous species ‘invasive’?

It spreads quickly and harms native species, habitats, or the economy.

Give two ways humans can introduce non-indigenous species.

By bringing in garden plants or pets from abroad, and by transport on boats, planes, or cars.

Why do some non-indigenous species spread fast in a new area?

They may have few or no natural predators and can breed quickly.

Give two ways a non-indigenous species can reduce biodiversity.

By outcompeting native species for food and space, and by spreading disease.

How can a non-indigenous species upset a food web?

It changes the numbers of predators and prey, which breaks feeding links.

Name one economic impact of a non-indigenous species.

It can damage crops, costing farmers money.

What is biological control, and what is one risk?

Using a predator, parasite, or disease to control a pest; it may also harm native species.

How can people help stop the spread of non-indigenous species?

Do not release pets or plants, and clean boots and boats after trips.

Give one UK example of a non-indigenous species and its effect.

Grey squirrels from North America outcompete red squirrels, so red numbers fall.

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