Organism Interactions

Alondra Del Rio5/2/14

(there are animations on these slides so if you play the words/pictures will be legible)

What is symbiosis?

Symbiosis- a relationship between two different species that live on, in or near each other

What are the kinds of symbiosis?

• Commensalism• Mutualism• Parasitism

What is commensalism?

Commensalism- a symbiotic relationship in which one organism benefits and the other is not affected

Examples of commensalismBirds and cowsBirds feed on insects. When cows eat or graze they stir up bugs making them easier to find for birds. The bird benefits because it gets food and the cow is not affected. (this would not be a kind of bird who eats the bugs off cows)

Frogs and TreesThe trees protect the frogs from the rain but receive no benefit or harm

What is mutualism?

• Mutualism- a symbiotic relationship in which both organisms are benefited

Examples of mutualismClownfish and anemones

Clownfish live in anemones and predators may get poisoned by the anemone’s nematocysts keeping the clownfish safe and giving them a place to live. In Return the clownfish cleans the anemone. Nematocysts- a specialized cell containing a barbed or venomous coiled thread that can be projected in self-defense or to capture prey.

We are SAFE!!!!!!!!

Bees and FlowersBees pollinate flowers allowing them to reproduce. The bees then in return get food.

What is parasitism?

Parasitism- a symbiotic relationship in which the parasite benefits and the host is harmed

Examples of parasitism

Dog and Ticksthe dog loses nutrients, harming it, and the

tick is getting nutrients that it needs benefiting it.

----------

----

My nutrients!!

Humans and MosquitoesMosquitoes use (in this example, there are many more things other than) humans as a food source. They land on the skin and suck out some of your blood, making a meal for them and an irritating itch for us and maybe a disease.

Meal Time!!

What is Competition?

Competition- when organisms compete for what they need, such as food, shelter/territory, mate, etc.

Other non-symbiotic relationships

• Competition• Cooperation• Predation

Examples of Competition

DeerDeer often fight against each other for things such as a mate.

WolvesWolves and wolf packs often fight against each other so they can claim their territory. If a wolf claimed its territory and other wolves try to claim it they fight.

MY TERRITORY!!!!

What is Cooperation

Cooperation- When two organisms work together to get something they need.

Examples of CooperationA wolf PackIn a wolf pack the members have to work together to help survive. They have certain jobs to make it easier.

WE HAVE TO WORK TOGETHER GUYS!!

Hammer head shark and barber fishA hammer head shark in the ocean may look for company. This company is found in barber fish. These fish give company to the shark and rub up against its rough skin and that helps the fish get parasites and other unneeded things off of them

Hey dude!

What is Predation

Predation- when one animal is the predator and (usually) the smaller weaker animal is the prey

Examples of Predation

Snake and mouseA snake would go after a mouse and eat it. By doing this the snake is the predator and the mouse is the prey.

YUM!

Hawk and RabbitA hawk soaring in the sky may see a rabbit and go after it and eat it. Making the hawk a predator and the rabbit the prey.