Dynamic Ecosystems – Unit 2 AOS 2

Aims

1. To describe the five key relationships between organisms found in ecosystems

2. To be able to apply this knowledge in a novel setting

3. To investigate interactions among organisms in an ecosystem of choice

RELATIONSHIPS 1A AND 1B

Two types of competition

RELATIONSHIP 2

Video

ADAPTATIONS TO OVERCOME PREDATORS

Monarch Butterfly (bad taste) Viceroy Butterfly

SYMBIOSIS

Is an extended association between 2 species in a community where at least one of the organisms benefitsThere are three different types of Symbiosis Relationships, we will examine each of these

RELATIONSHIP 3

Video

RELATIONSHIP 4

Video

RELATIONSHIP 5

Ectoparasite Host Endoparasite(Sucking lice)(chipmunk) (Pinworms)

 

ectoparasites (sucking lice)                     host (chipmunk)                    endoparasites (pinworms)

Relationship Description

Parasitism

Predator-Prey Relationships

Intra-species Competition

Mutualism

Inter-species Competition

Commensalism

One organism lives on or in another organism and feeds on it, without killing it The same species compete for resources for survivalTwo different species both benefit from having a relationshipOne species benefits from a relationship with another

organism while the other is neither harmed nor benefitsOne organism kills and feeds off another organism. Two different species compete over resources for survival

Activity: Imaginary Organisms

• Break up into groups of 3 • You will be given a set of cards • Each set will contain imaginary organisms with

different needs. • Create each of the 5 relationships by matching

organisms up based on their needs. • You will need to add information to make the

relationships make sense

Research Task

• Break up into groups of three• Based on previous lessons, choose an

ecosystem that interests you• Research the interactions among organisms

found in this ecosystem• Create a poster mapping out these relationships • You will be asked to present your findings to the

rest of the class at the end of the lesson