1. WARM UP 9/10… Name the type of SYMBIOSIS
1. Fleas feed on the blood of the dogs The dog is physically weakened by the loss of blood. What type of symbiosis is this? 2. Remoras “hitch a ride” on sharks by attaching themselves. They feed on the scraps of the shark’s meal. What type of symbiosis is this? 3. Algae receive a place to live through their relationship with coral. The coral receives the extra food that the algae produce from photosynthesis. What type of symbiosis is this?

2. Relationships in Ecosystems

3. Populations All of the same species in an ecosystem

4. Competition All living things compete for
Food
Space
Competition limits population growth

5. Limiting Factors
Anything that restricts or controls the number of individuals in a population

6. Carrying Capacity
The largest number of individuals of one species an ecosystem can support

7. Symbiosis
Any close relationship between species
en.wikipedia.org

8. Mutualism A relationship in which both species benefit Pollination
Cleaner fish
Lichens: algae + fungus
www4.tpgi.com.au

9. Commensalism
A relationship in which one species benefits and the other is neither helped nor harmed
Shark & remora
Barnacles on whale

10. Parasitism
A relationship in which one organisms benefits and the other is harmed
Mistletoe
Tick

11. Predator - Prey
Predators are consumers that capture and eat other consumers, called prey

12. Cooperation Organisms working together toward a common end or purpose