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Table of Contents
Learning Intentions
Learning Intentions
To learn the roles of organisms in ecosystems
To learn how to construct a food web
To learn what happens to a changing population
Success Criteria
Success Criteria
I can define the different roles of different organisms
I can make a food web for an ecosystem
I can identify the ways that a population can change
Engage
Engage
How would you describe the following relationships?
New Information
New Information
Abiotic Factors (reminder)
Abiotic Factors (reminder)
These are non-living factors.
We general speak about them in terms of quaility.
e.g. The amount of light, the cloudiness of water
Biotic Factors (reminder)
Biotic Factors (reminder)
These are living factors.
We speak about the presnece of these and how the relate to each other.
e.g. The paracitic larva, the benefical adaptation of a birds wings
Biotic Factor: Competition
Biotic Factor: Competition
Organisms who are trying to obtain the same resource.
These organisms may be of the same group or different organisms
For example a school of fish (all the same) or a cat competing against a snake for a small bird or mouse
Biotic Factor: Predation
Biotic Factor: Predation
An organism that kills and eats another organism: the food source is the prey the attacker is the predator
Biotic Factor: Mutalism
Biotic Factor: Mutalism
The relationship where two organisms live close together and both benefit
For example: Bee and a flower
Biotic Factor: Paracitism
Biotic Factor: Paracitism
The relationship where on organism benefits , and the other is harmed.
A parasite lives on or in another organism (the host) and feeds off it.
For example a wasp laying its eggs on a caterpillar
Biotic Factor: Commensalism
Biotic Factor: Commensalism
A relationship where one organism benefits and the other is unaffected
An owl in a tree (the owl uses the tree as its habitat; the tree is unharmed)
Food Webs
Food Webs
A graphical represnetaions of feeding relationships within a community
Activities
Activities
Make your own food web
Make your own food web
Try to create your own food webs using these collections of data
Activity making-food-webs.pdfReflection
Reflection
Written Reflection
Written Reflection
What did you struggle with?
What was really easy?
What are you still curious about?
Success Criteria
Success Criteria
Which level are you currently sitting at in the success criteria?
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