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On your whiteboard:Redraw the diagram to show the potential effect on the
realized niches of Species 1, 2, and 3 if a predator of Species 3 is introduced into the habitat.
What is Predation?
The process by which a predator hunts, kills, and consumes prey
Video Clip
Population CyclesPredation causes cycles in predatory and
prey population sizes
Brainstorm!
What are some defenses prey organisms have evolved over time?
Work with your partnerWrite your ideas on the whiteboard
Mimicry is the case in which one species looks similar to another species.
1. Batesian mimicry in which one non-poisonous species mimics another poisonous species.
2. Mullerian mimicry occurs when two poisonous species evolve to look like each other.
MIMICRY
Blend in to hide from predators….or to BE a predator!
•An organism feeding on a plant
Brainstorm!
What are some defenses plants have evolved over time?
Work with your partnerWrite your ideas on the whiteboard
Thorns, Spikes, or Hair
SPECIES A SPECIES B
Predation + -One benefits & other
harmed
Herbivory + -One benefits & other harmed
