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Ecology Chapter 2 Section 2

Describes the three types of symbiosis: mutualism, commensalism, and parasitism.
by

Michael Goorsky

on 7 January 2014

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Transcript of Ecology Chapter 2 Section 2

SYMBIOSIS:
A relationship between members of two different species that live together in a close relationship

Reporting Topic: Ecosystem (1)
Different Similar Different
Cooperation
Competition
Draw a Venn Diagram as illustrated below. Read pages 55-57 in your Ecology text. Write down similarities and differences for each
type of interaction.
Quick read
Examples:
hunting a pack or pod
share different jobs within a
colony of same
species live in
family groups
to share
responsibilities
Examples:
toxins
obstruction of light
marking an area with urine
fighting
songs or sounds to attract a mate
positive/positive
negative/negative
Limited resources:

light
space
water
nutrients
food
territory
mates
Different Similar Different
Cooperation
Competition
I. Organism Interactions

a. Competition
the struggle between organisms or different populations for a limited resource.
Ex: Creosote bushes compete for space

b. Cooperation
an interaction in which organisms work in a way that benefits them all.
Ex: Killer whales (Orcas) hunt together in a pod
e. Exploitation
Predation (predator & prey)
one organism (predator) eats another organism (prey)
Ex: Coyote eating a rabbit
 
Parasitism
one species (parasite) benefits while the other is harmed (host)
Ex: ticks on dogs, tapeworms
living inside humans, or
athlete’s foot fungus
growing on humans
 
a. Mutualism
both species benefit
Ex: bees get food from flowers and spread pollen to other flowers
 
 
b. Commensalism
one species benefits while the other is not harmed

Ex: a remora fish suctions itself to a shark. When the shark eats, the remora fish eats some of the leftover food. The shark is not harmed.

 
c. Parasitism
one species (parasite) benefits while the other is harmed (host)

Ex: ticks on dogs, tapeworms living inside humans, or athlete’s foot fungus growing on humans
 
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III.Other types of relationships

a.Predation (predator & prey)
one organism (predator) eats
another organism (prey)

Ex: Coyote eating a rabbit
Wit and Wisdom:
http://www.npr.org/2012/12/27/168147882/birds-hang-around-mistletoe-for-more-than-a-kiss
"Life is 10% what happens to me and 90% how I react to it."
-Lou Holtz
Learning Target:
Describe how groups of living
things interact with each other
Full transcript