Analyze the significance of biological diversity in an ecosystem.
Biotic Factor- living components of ecosystems
Abiotic Factor- non-living components of ecosystems
Symbiosis- a relationship where 2 organisms live in close association with each other
Predation- a relationship between 2 organisms where one organism, the predator, feeds on the other organism or prey (+,-)
Predator- a consumer that feeds on other consumers
Prey- the organism that is eaten by the predator
Parasitism- a relationship between 2 organisms where one organism, the parasite, feeds off of the host (+,-)
Host- the organism the parasite lives in or on
Parasite- an organism that feeds off of another living organism
Mutualism- a relationship that exists between 2 organisms where both benefit (+,+)
Commensalism- a relationship that exists between 2 organisms where one organism benefits and the other is unchanged (+,0)
Competition- a relationship between 2 organisms who use the same resources (+,-)
The students will be able to…
1. Identify both abiotic and biotic factors and describe their interactions within ecosystems.
2. Use + (benefits), - (harms), and 0 (no change) symbols to correctly identify given symbiotic relationships that occur in ecosystems.
3. Read information sheets on given symbiotic relationships, evaluate the type of relationship, and report out to their small group.
4. Compile a chart with at least 3 examples of each symbiotic relationship presented in class.
How do organisms interact and depend on each other and their environment for survival?
1- 85 minute class periods
Symbiosis Power Point (with multiple examples)
Information sheets with descriptions of symbiotic relationships.
Table Response cards with the words: mutualism, commensalism, parasitism, competition, predation
W= Post the standard and the agenda on the board
H= Use real pictures of organisms, also use examples that directly affect each student like “mites living in eyebrows” and “bacteria living in the human intestine”, also interject the effect of antibiotics on the good bacteria in the digestive system
E= Jigsaw activity
R= Rehearse with response cards
E= Jigsaw chart, response cards in closure will allow the students to self-assess their own understanding of the symbiotic relationships
T= Create a handout with more examples, teacher observation and redirection
O= This lesson contains a variety of teacher directed as well as student directed activities with numerous “real-life” examples
Peer group Jigsaw Activity
Symbiosis Pictures or Posters