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Ecosystem Vocabulary. Interactions in Ecosystems. Our goals for this unit. I will be able to recognize consumers, producers, and decomposers. I will be able to recognize how changes in populations effect the balance of an ecosystem.

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our goals for this unit
Our goals for this unit
  • I will be able to recognize consumers, producers, and decomposers.
  • I will be able to recognize how changes in populations effect the balance of an ecosystem.
  • I will be able to recognize carnivores, omnivores, and herbivores.
  • I will be able to recognize different types of ecosystems and the organisms living in them.
  • I will be able to analyze both positive and negative effects on ecosystems.
  • I will be able to explain how a food chain and food web interact.
  • I will be able to order animals in a food web/food chain.
  • Short for “ecological system”
  • Includes all of the living and nonliving organisms existing together in a particular area
  • Complex set of relationships among the living resources, habitats, and residents of an area; includes plants, trees, animals, fish, birds, micro-organisms, water, soil, and people
  • The role of an organism in its habitat
  • The natural environment where an organism lives
  • A close, long lasting relationship between two species
  • All the members of the same type of organism living in the same ecosystem
  • An animal that hunts and eats other animals
  • An animal that is hunted and eaten by a predator
  • The dying out of all the members of a species
endangered species
Endangered Species
  • A species that is close to extinction
  • The addition of harmful things to the environment
threatened species
Threatened Species
  • A species that is close to becoming endangered
food chain
Food Chain
  • The description of how energy in an ecosystem flows from one organism to another
food web
Food Web
  • The description of all the food chains in an ecosystem
  • An organism that uses the Sun’s energy to make its own food
  • An organism that eats other organisms
different types of consumers
Different types of consumers
  • Carnivore- An animal that eats other animals
  • Herbivore- An animal that eats only plants
  • Omnivore- An animal that eats both plants and animals
levels of consumers
  • Primary consumer- an animal that gets all its energy from plants (herbivore)
  • Secondary consumer- an animal that eats primary consumers (carnivore)
  • Tertiary consumer- an animal usually at or near the top of the food chain; eat other consumers (carnivores or omnivores)
  • An organism that breaks down dead plants and animals into simpler materials that enrich the soil
energy pyramid
Energy Pyramid
  • Shows how energy moves to each level of an ecosystem
test prep
Test Prep
  • Which would have the same effect on a zebra population as increasing the number of lions in the habitat?
  • The grass-eating insects die from disease.
  • No fires occur during the dry season.
  • Antelopes and wildebeests move into the area.
  • Trees are uprooted during a summer storm.
test prep1
Test Prep
  • A cat eats a mouse. Which is the cat?
  • Parasite
  • Population
  • Predator
  • Prey
test prep2
Test Prep
  • A tick is an animal that takes blood from its host. Which type of symbiosis does this describe?
  • Commensalism
  • Mutualism
  • Niche
  • Parasitism
test prep3
Test Prep
  • Two species of birds share an island and depend on the same food source. Which would likely happen if food became scarce?
  • The birds would all fly away.
  • Both birds would become extinct.
  • The island’s bird population would decrease.
  • The smallest bird species would become extinct.
test prep4
Test prep
  • Which of these is a predator/prey relationship?
  • A mouse eats a seed.
  • A plant gets energy from the Sun.
  • A spider eats a cricket.
  • An owl uses a cactus for a home.
test prep5
Test prep
  • Which is a role of lions in an ecosystem?
  • Lions help keep the population of trees under control.
  • Lions help keep the population of zebras under control.
  • Lions help keep the population of wolves under control.
  • Lions help keep the population of grasses under control.
test prep6
Test Prep
  • A town used pesticides to control mosquitoes in the
  • area. Scientists later observed that the population of
  • one type of bat had decreased. Which is the BEST
  • conclusion you can draw from this information?
  • People overhunted the bats.
  • This type of bat ate mosquitoes.
  • The bats’ habitat was destroyed.
  • The bats died from disease spread by the mosquitoes.
test prep7
Test Prep
  • The zebra mussel was introduced into a lake ecosystem. Within a few years, the zebra mussel population soared, and it showed no sign of declining. Which conclusion can you draw?
  • The mussels will soon become extinct.
  • The mussels are not adapted to freshwater.
  • The mussels play a vital role in the lake’s ecosystem.
  • The mussels have no natural predators in the lake.
test prep8
Test Prep
  • In the last several years, the number of rabbits in a
  • Mississippi forest has remained the same. Which of the
  • following would MOST LIKELY cause the number of rabbits
  • to decrease?
  • Plant more tress in a forest.
  • Increase the size of the rabbits’ habitat.
  • Increase the number of decomposers in the habitat.
  • Introduce carnivores, such as hawks and bobcats, into the habitat.