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Page 131 Page 132
Interactions in an Ecosystem
WARM – UP
Use your prior knowledge to define the following words:
Predator
Prey
Habitat
Ecosystem
Homework:Create Your Own Creature
Monday, April 8, 2013Tuesday, April 9, 2013
Monday, April 8, 2013Tuesday, April 9, 2013
Create your Own Creature
Habitat vs. Niche •Write a sentence for each using the terms in context.
Five Specific Interactions in an EcosystemPredation – Competition –Parasitism - Mutualism -Commensalism -
Writing and Discussion About Predation
Interactions in an Ecosystem
Predation Competition
Whale Shark eats plankton and small fish
Hawks and fox eat mice.
Interactions in an Ecosystem
Parasitism Mutualism
Mosquito sucking blood from animals.
Oxpecker Bird eats ticks and parasites. Beasts get pest control
Interactions in an Ecosystem
Mutualism
Remora sharks have an adhesive disk on their dorsal surface, with the help of which they attach themselves to whales and then, clean the whale’s skin and feed on the remains from the whale's food.
Interactions in an Ecosystem
Commensalism• "The pearlfish
uses the sea cucumber for a hide-out from predators. The pearlfish will live in the sea cucumber’s anus, backing into the hole tail-first so its head can stick out."
Interactions in an Ecosystem
Commensalism• Glass shrimp, which
are almost completely see through, will attach to the chocolate chip sea star and take on its coloration. This helps the shrimp camouflage itself so it is not eaten by predators."
Page 133 Page 134
Energy in an Ecosystem
WARM – UPSymbiosis means any prolonged association of living together of two or more organisms of different species.
Create a KIM card for “symbiosis”
Homework: Complete lab analysis
Wednesday, April 10, 2013Thursday, April 11, 2013
Wednesday, April 10, 2013Thursday, April 11, 2013
Complete Lab Analysis Questions
KK = Key Word
II = Info. or definition
MM = Memory
Cue or picture
Your Sentence
Pre-Assessment Practice Questions
Review Cellular Respiration •FormulaC6H12O6 + 6O2 ATP + 6 H2O + 6 CO2
•ReactantsGlucose and oxygen•ProductsEnergy, water, and carbon dioxide•Importance of ATP = energy rich molecule•Oxidation = the act of combining with oxygen•What kind of organisms = ALL•Relation to Photosynthesis
Review Trophic Pyramid
Activity/LabEnergy Flow in Ecosystems
Nearly all of the energy that drives ecosystems ultimately comes from the sun.
Solar energy, which is an abiotic factor, by the way, enters the ecosystem through the process of photosynthesis.
Primary consumers only obtain a fraction of the total solar energy—about 10%—captured by the producers they eat. The other 90% is used by the producer for growth, reproduction, and survival, or it is lost as heat.
At each level, called a trophic level, about 90% of the energy is lost.