RelationshipsThe connection between two organisms.

What do you Know?

In your everyday life, you have different relationships. Can you name a type of relationship you have?

What do you know?

Now think of two animals with a relationship, and let’s list them.

Competition

Competition is when two organisms compete (or fight) for a resource (like food).

Ex: the owl and snake in this web.

Competition

Not all resources are food.

For example, plants must be planted a certain distance apart or they compete for growing space and soil nutrients.

Symbiosis

Symbiosis is a relationship between two organisms and AT LEAST one organism benefits from it.

3 types of symbiosis

1. Mutualism

2. Commensalism

3. Parasitism

Mutualism

A symbiotic relationship where both of the organisms benefit.

Ex: humans and plants

Ex: Nile crocodile and plover

Mutualism

The sucker fish removes parasites from the tiger shark.

Commensalism

A symbiotic relationship where one organism benefits and the other organism is not hurt or helped.

Ex: Hermit crabs and snails

Commensalism

The spider needs the plant to hang its web from.

Parasitism

A symbiotic relationship where one organism benefits and the other organism is hurt.

Ex: Fleas on a dog

Parasitism

The dodder vine uses special roots that absorb nutrients from the plant it wraps around.

Your Mission

1. Watch the following movie.

2. Find at least 1 example of each of the vocabulary words we discussed and add it to your notes.

Closure

If you were a clown fish in the great wide ocean, what type of relationship do you think would be the most beneficial to you? Why would that relationship be more helpful to you than the other relationships?