Presentation on theme: "Coevolution. Between plants and animals A relationship develops between two organisms such that, as they interact with each other over time, each exerts."— Presentation transcript:
Between plants and animals A relationship develops between two organisms such that, as they interact with each other over time, each exerts a selection pressure on the other. Evolution of each becomes interdependent on that interaction
Coevolution a reciprocally induced evolutionary change over time between two organisms
Types of relationships...
Symbiotic relationship Ants and Acacia tress Beltian bodies thorns nectaries Ants, caterpillars and acacia
How is it a mutual relationship? Ants provide tree services too! Attack herbivores, chew up nearby trees so Acacias arent in shadows. Tree provides ants- nectar for food, thorns for nest, protein rich Beltian bodies (on leaf tips)
Example #2- Figs and Wasps synconium
Why is it mutually beneficial? Reproductive system of both are tied together. Fig benefits from pollination Wasps benefit by having a food source for larva