Chapter 3 Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| autotroph | organism that is able to capture energy from sunlight or chemicals and use it to produce its own food
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| primary producer | first producer of energy rich compounds that are later used by other organisms
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| photosynthesis | process used by plants to produce food from sunlight
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| chemosynthesis | process in which chemical energy is used to produce carbohydrates
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| heterotroph | organism that obtains food by consuming other living things
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| consumer | organism that relies on other organisms for its energy and food supply
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| carnivore | obtains energy by eating other animals
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| herbivore | obtains energy by eating plants
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| scavenger | consumes carcasses of other animals
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| omnivore | eats both plants and animals
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| decomposer | breaks down and obtains energy from dead organic matter
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| detritivore | organism that feeds on plant and animal remains and other dead matter
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| food chain | a series of organisms interrelated in their feeding habits
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| phytoplankton | photosynthetic algae found near the surface of the ocean
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| food web | series of organisms related by predator-prey and consumer-resource interactions
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| zooplankton | small free-floating animals that form part of plankton
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| trophic level | each step in a food chain or food web
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| ecological pyramid | illustration of the relative amounts of energy or matter contained within each trophic level in a given food chain or food web
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| biomass | amount of living matter in a given habitat
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| biogeochemical cycle | process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another
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| nutrient | nourishing, providing nutrition
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| nitrogen fixation | process of converting nitrogen gas into nitrogen compounds that plants can absorb and use
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| denitrification | process by which bacteria convert nitrates into nitrogen gas
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| limiting nutrient | single essential nutrient that limits productivity in an ecosystem
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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