Lesson aims

We are going to learn about the effect of competition on populations and strategies shown by organisms to reduce it.

Graph (a) shows the population size of two protoctistan organisms when cultured separately.

Graph (b) shows the effect of culturing them together. What conclusion can you make about the organisms?

Lesson aims

We are going to learn about the effect of competition on populations and strategies shown by organisms to reduce it.

niche interspecific

intraspecific

competitive exclusionresource

Suggest the strategy shown by the organism to compete for resources successfully.

What is the resource?

Suggest the strategy shown by the organism to compete for resources successfully.

What is the resource?

Suggest the strategy shown by the organism to compete for resources successfully.

What is the resource?

Suggest the strategy shown by the organism to compete for resources successfully.

What is the resource?

Suggest the strategy shown by the organism to compete for resources successfully.

What is the resource?

Tamias striatusTamias dorsalis

ChordataMammaliaRodentiaSciuridaeTamiasdorsalis