Ecosystem and Food Web - Practice Flashcard

Flashcard
•
Biology
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a food web?
Back
A food web is a complex network of feeding relationships among organisms in an ecosystem, showing how energy and nutrients flow through different trophic levels.
2.
FLASHCARD QUESTION
Front
Define trophic levels.
Back
Trophic levels are the hierarchical levels in an ecosystem, defined by how organisms obtain their energy: producers (1st level), primary consumers (2nd level), secondary consumers (3rd level), and tertiary consumers (4th level).
3.
FLASHCARD QUESTION
Front
What is a producer?
Back
A producer is an organism that can make its own food through photosynthesis or chemosynthesis, typically plants and some bacteria.
4.
FLASHCARD QUESTION
Front
What is a primary consumer?
Back
A primary consumer is an organism that eats producers; they are usually herbivores that feed on plants.
5.
FLASHCARD QUESTION
Front
What is a secondary consumer?
Back
A secondary consumer is an organism that eats primary consumers; they can be carnivores or omnivores.
6.
FLASHCARD QUESTION
Front
What is a tertiary consumer?
Back
A tertiary consumer is an organism that eats secondary consumers; they are typically top predators in the food web.
7.
FLASHCARD QUESTION
Front
What is a decomposer?
Back
A decomposer is an organism that breaks down dead organic material, returning nutrients to the soil; examples include fungi and bacteria.
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