Relationships Between

Living ThingsLab Book p. 82

Symbiosis

An ecological relationship between organisms of two different species that live together in direct contact

Commensalism

A relationship in which one organism is HELPED and the other is NOT HARMED

Examples: Tree and Orchid (Brainpop) Buffalo and birds (eat flies) Remora and Shark Sea anemone & clown fish

Mutualism

A relationship in which BOTH organisms are HELPED.

Examples: Crocodile & Egyptian plover bird (Brainpop) Tick Bird & Rhino Tiger Groupers and Cleaner Gobies

Parasitism

A relationship in which one organism is HELPED (it is the parasite) and the other organism is hurt but not KILLED (it is the host).

Examples: Which is the parasite & which is the host? Termite & Tree Flea & Dog Botfly & Mammal (Brainpop) Tick & Rhino Virus & Human

Predator/Prey

This relationship is between two animals. One organism is HELPED or FED (predator) and the other one is KILLED & EATEN (prey).

Examples: Which is the predator & which is the prey? Bear & Fish Human & Deer Hawk & Jackrabbit (laser disc) Sea lion & sunfish Sea otter & puffer fish

What kind of relationship do each of the following have? Bird & Worm Bird & Tree (with a nest) Cow Bird & Cow Cow & Mosquito Tree Fungus & Tree