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Unit 7, Day 3. Homework Quiz (6). Open Note (stamp) Autotrophs (all types) Heterotrophs (all types) Food Chains Food Webs Producers and Consumers (all trophic levels) Energy, Biomass, and Numbers Pyramids. Agenda (1). Homework Quiz Agenda Homework Debrief Learning Goal - PowerPoint PPT Presentation
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Unit 7, Day 3
Homework Quiz (6)•Open Note (stamp)
▫Autotrophs (all types)
▫Heterotrophs (all types)
▫Food Chains
▫Food Webs
▫Producers and Consumers (all trophic levels)
▫Energy, Biomass, and Numbers Pyramids
Agenda (1)• Homework Quiz• Agenda• Homework Debrief• Learning Goal• String Activity• Activity Analysis• Pyramid Activity• Island Application
(Research)• Homework
Homework Debrief (6)•Autotrophs (all types)•Heterotrophs (all types)•Food Chains•Food Webs•Producers and Consumers (all trophic
levels)•Energy, Biomass, and Numbers Pyramids
Learning Goal (1)
•Objective 2.5.F (Energy Models) – I can
describe how energy flows through an
ecosystem and I can model this with food
chains, food webs, and ecological
pyramids.
String Activity (15)•If possible, find the person with the same
word•Together, hypothesize if/who you consume
AND if/who consumes you▫There may be multiple answers!
•Approach those other organisms. IFF they agree with your hypothesis, then place a string between you.▫Try to keep string untangled▫Please do not push through strings
Activity Analysis (10)• Based on what we as a class determined, work with
your table to draw a food web.
• Determine what each organism is: primary producer, primary consumer, secondary consumer, tertiary consumer, detritivore, or decomposer▫ It’s okay for you to be incorrect! Take a risk.
• Alligator Lizard, Bacteria, Cricket, Dead Animals, Dead Leaves, Earthworm, Fox, Fungus, Hawk, Maggots,Maple Tree Leaves, Millipede, Mushrooms, Pillbugs, Robin, Rotting Log, Sun
Activity Debrief (3)
Notes (4)•Detritivores CONSUME detritus
▫Detritus = dead plants/animals, feces
▫Millipedes, woodlice, dung flies, slugs, worms, sea stars, sea cucumbers, fiddler crabs
•Decomposers CAN’T EAT. They ABSORB & BREAK DOWN cells.▫Bacteria (dec. meat), fungi (dec. fruits/veggies)
Pyramid Activity (4)•On panel 1:
▫Ecological Pyramids Graphs of trophic structure
▫Trophic levels (feeding position) Primary producer = autotroph Primary consumer = herbivore Secondary/Tertiary consumer = omnivore/carnivore
Pyramid Activity (8)• Panel 2 • Pyramid of Energy
▫ Flow of energy
▫ Lose 90% of energy as heat Only 10% of energy
available for next trophic level
▫ Base has 100% of energy available
Pyramid Activity (8)• Panel 3 • Pyramid of Biomass
▫ Biomass per area
▫ Biomass = mass of each
individual x number of
individuals at each trophic
level
▫ g/m2
Pyramid Activity (8)• Panel 4
• Pyramid of Numbers
• # of individuals per area
• Large # of producers at
base
• Lower # of carnivores at
top
▫ (Usually)
Island Application (22 + 3 cleanup)• Must have primary producers, primary consumers,
secondary consumers, tertiary consumers, and decomposers.
• Must contain autotrophs, herbivores, omnivores, carnivores, and detritivores.
• Create a food web that contains at least 3 organisms at each trophic level + decomposers + detritivores
• Humans do not count!
Homework (1 min)•Due Wed 4/17 or Thu 4/18
▫YouTube Video: Biogeochemical Cycles▫Homework Quiz: Biogeochemical Cycles
•Homework quiz is open note•Suggestion: Draw each cycle!!!