InitiationDescribe a time in your life when you worked together with someone to achieve a common

goal.

What kind of relationship did you have to have with that person?

What would have happened if that person wasn’t around to help out?

Unit 7EcologyDiscussion 7.2

Objectives

SWBAT...identify the interactions that occur within communities.

SWBAT...identify the characteristics of major biomes.

Key QuestionsWhat interactions occur within

communities?

What are the unique characteristics of the world’s

major biomes?

Words To Live By...biotic factor

abiotic factorniche

symbiosismutualism

commensalismparasitism

biome

Key PointsBiotic and abiotic factors determine the survival

and growth of in organism in a particular ecosystem.

Community relationships, such as competition, predation, and various forms of symbiosis, can

powerfully affect an ecosystem.

The world has several major biomes that consist of complex comunities interacting with various biotic

and abiotic conditions.

Biotic and Abiotic Factors

Biotic Factors:

Abiotic Factors:

In the following picture, name the biotic and abiotic factors?

Biotic means LIVING

Abiotic means NONLIVING

NicheAn organisms niche is the specific role it plays in

its environment.What does this organisms

eat?

What physical conditions are required for it to survive?

When and how does this organism reproduce?

Slugs, Earthworms, Fish, Toads

Semi-Aquatic, Lots of places to hide.

Mating occurs in the spring. Females give birth to live young.

Community interactions have a powerful affect on

am ecosystem!Two common interactions are Competition and Predation.

Which one is which??? Describe.

SymbiosisSymbiosis is any relationship in which two

organisms live closely together.

3 Types of Symbiosis

MutualismCommensalism

Parasitism

As you watch the video, come up with your own definitions of the three types of mutualism.

http://www.5min.com/Video/Interspecific-Associations-Symbiosis-151425985

Symbiosis and Homework

You and your friend have decided to work on a major project for biology class together.

Describe the situation if:

Mutualism was occurring...

Commensalism was occurring...

Parasitism was occurring...

Types of Mutualism

Types of Commensalism

WARNING WARNING WARNING WARNING

It’s about to get gross!!!!

Types of Parasitism

http://www.electroherbalism.com/

Naturopathy/MiscAltHealthTopics/Parasites/

Parasite_Pictures_and_videos.htm

TerminationDescribe a times in your life in which you performed:

MutualismCommensalism

Parasitism