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Organization
Of
Life
Learning Target: I can define ecology.
Learning Target: I can explain what trophic
levels are.
Learning Target: I can differentiate between
the different trophic levels.
What is Ecology?
•The study of the interactions of living
organisms with one another and with their
environment
What is a trophic level?
•One of the steps in a food chain or food
pyramid
First Trophic Level
•Made up of producers
•Obtain their food through photosynthesis
•Phytoplankton
•Plants
•Highest number of organisms
Second Trophic Level
•Primary consumers
•AKA Herbivores
•Zooplankton
•Insects
•Cows
•Deer
•Rabbits
Third Trophic Level
•Secondary consumers
•AKA Carnivores
•Some species of fish
•Some species of birds
•Weasels
•Snakes
•Fox
Fourth Trophic Level
•Tertiary consumers
•AKA Carnivores
•Some species of fish
•Hawks
•Wolves
•Bears
•Lions
•Tigers
•Killer Whales
•Great White Shark
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Other Organisms
•Omnivores
•Eat plants and animals
•Bears
•Pigs
•Raccoons
•Humans
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Other Organisms
•Decomposers
•Breakdown the remains of dead plants and
animals
•Bacteria
•Critical to replenishing nutrients in the soil
Other Organisms
•Detritivores
•Feed on dead animals
•Worms
•Vultures
•Millipedes
•Fungus
Learning Target Checkpoint
•What is ecology?
•What are trophic levels?
•Differentiate between the different trophic
levels.
Ecosystems
Learning Target: I can explain what an
ecosystem is.
Learning Target: I can differentiate between
abiotic and biotic factors in an ecosystem.
What is an ecosystem?
•A community of organisms and their abiotic
environment
•Ecosystems are interconnected
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Organization Terms
•Community
•A group of various species that live in the
same place and interact with each other.
•Population
•All the members of the same species that
live in the same place at the same time.
•Organism
•An individual living thing.
•Species
•A group of organisms that can mate and
produce fertile offspring.
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What are the components of an ecosystem?
•Sun (energy)
•Air
•Water
•Soil
•Plants
•Animals
•Which of these are biotic factors and which
ones are abiotic factors?
•What is the difference between the two?
•Abiotic: nonliving
•Biotic: living
Learning Target Checkpoint
•What is an ecosystem?
•What are abiotic factors and provide an
example?
•What are biotic factors and provide an
example?