3.3 Flashcards
Define producer, primary consumer, secondary consumer, and tertiary consumer.
A producer makes its own food, a primary consumer eats producers, a secondary consumer eats primary consumers, and a tertiary consumer eats secondary consumers.
Define autotroph
An autotroph is an organism that produces its own food.
Define heterotroph
A heterotroph is an organism that relies on other organisms as food sources.
Define herbivore
An herbivore only eats plants.
Define omnivore
An omnivore eats plants and animals
Define carnivore
A carnivore only eats animals.
Define detritivore
A detritivore only eats dead things.
Define keystone and invasive species
A keystone species is a necessary part of an ecosystem that makes biodiversity possible, an invasive species is a species from a different ecosystem that has no natural predators and can sometimes take over the ecosystem of a new area completely.
Define trophic cascade diagrams
Trophic cascade diagrams are diagrams used to show direct and indirect, positive and negative effects different species have on each other in an ecosystem.
What are the differences between food webs and trophic cascade diagrams?
A food web shows predation and direct negative effects, a trophic cascade diagram shows indirect and direct effects, and shows effects that are not related solely to predation.
What trophic level are plants usually at?
Producer
What trophic level are herbivores usually at?
Primary
What trophic levels are omnivores usually at?
Secondary and Primary.
What trophic level are carnivores usually at?
Secondary and above.
What trophic level are detritivores usually at?
Anywhere above producer.
