Front

Examples of parasitism

Back

Tapeworms, ticks, lamprey, mistletoe

Front

Movement of some parasites

Back

Some parasites can move on mosquitoes and dog fleas.

Front

Symbiotic relationships

Back

Interactions between two different species living in direct contact for mutual benefit.

Front

Role of Alga in Lichens

Back

Acts as the producer and food source for the fungus.

Front

Role of Fungus in Lichens

Back

Provides structure and physical support for the algae.

Front

Symbiotic relationship: commensalism

Back

In commensalism, the benefits go to one of the two species, but the other is not hurt. An example is cattle stirring up insects for birds to eat.

Front

Image of cattle with birds, illustrating commensalism.

Back

The image shows cattle and birds, demonstrating a commensal relationship where cattle stir up insects for birds to eat.

Front

Example of a Keystone Species

Back

The beaver, which builds dams to control water levels.

Front

Food Chain Influence

Back

Keystone species have effects up and down the food chain.

Front

Percentage of identified species that are vertebrates.

Back

3% are vertebrates (mammals, birds, fish).