Understanding Environmental DNA Concepts

Environmental DNA (eDNA) allows scientists to detect living organisms from environmental samples like water and soil. This method involves collecting samples, extracting DNA, and analyzing it to identify species. eDNA is a powerful tool for monitoring native, threatened, and invasive species, revolutionizing biodiversity management. It offers a non-invasive way to study ecosystems, making it easier to protect and manage biodiversity.

What is the primary purpose of environmental DNA (eDNA)?

• To detect living organisms from environmental samples

• To modify genetic material

• To create new species

• To eliminate invasive species

Which of the following is NOT a source of eDNA?

• Scales

• Metal objects

• Hair

• Skin cells

What is the first step in the eDNA analysis process?

• Matching DNA to species databases

• Collecting samples from the environment

• Mapping species locations

• Analyzing DNA sequences

Where can eDNA be found besides aquatic environments?

• In metal ores

• In outer space

• In the air

• In terrestrial samples like soil

What is done with the unique sequence of each DNA molecule in the lab?

• It is analyzed for matches against a species database

• It is used to create new organisms

• It is used to modify existing species

• It is discarded

How does eDNA help in monitoring ecosystems?

• By creating new habitats

• By making cryptic species easy to find

• By increasing the population of native species

• By eliminating all invasive species

Which native species is mentioned as being monitored using eDNA?

• The Koala

• The Murray Cod

• The Great White Shark

• The Kangaroo

What is one of the threats that eDNA can help detect?

• Overfishing

• Deforestation

• Disease-carrying mosquitoes

• Climate change

How is eDNA revolutionizing biodiversity management?

• By increasing the population of endangered species

• By creating new species

• By eliminating all invasive species

• By making species identification more efficient

Who should you contact to learn more about eDNA?

• The local zoo

• A university

• Enviro DNA

• The government