#04 Independent Practice: Symbiosis

One species benefits while the other is neither helped nor harmed.

One species preys on another for food.

Both species benefit from the interaction.

One species benefits at the expense of the other.

Bacteria gain nutrition while releasing toxins into the body

Bacteria live in the human mouth gaining nutrition and causing cavities

Bacteria feed off an animal reducing the nutrition reaching host cells

Bacteria aid cows with digestion in return for nutrients of their own

Bacteria fix nitrogen for plants while gaining nutrition in return

prokaryotic

eukaryotic

Hermit crabs benefit from using the shell, and the dead gastropod is unaffected.

Hermit crabs harm the dead gastropod by using its shell.

Both hermit crabs and the dead gastropod benefit from this relationship.

The dead gastropod benefits from hermit crabs using its shell.