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Ecology
Term | Definition |
---|---|
Biomass | Total amount of living tissue within a given trophic level |
Ecology | the branch of biology that deals with the relations of organisms to one another and to their physical surroundings |
Energy Pyramid | a triangular diagram that shows an ecosystem’s loss of energy, which results as energy passes through the ecosystem’s food chain |
Trophic Levels | steps in a food chain or energy pyramid |
Energy Transformation | A change from one form of energy to another |
Food Web | A community of organisms where there are several interrelated food chains |
Food Chain | A series of steps in which organisms transfer energy by eating and being eaten |
Primary Consumer | An organism that eats producers |
Secondary Consumer | An organism that eats primary consumers |
Tertiary Consumer | An organism that eats secondary consumers |
What do the arrows show in a food web? | flow of energy |
Why is energy "lost" as you move up the energy pyramid? | 90% of the energy is used by the organisms. It is released into the environment as heat |
Where does all the energy originally come from in a food chain? | the sun |
About how much energy is passed on to the next level? | 10% is passed on |
Producer | an organism that makes its own food |
What is another term for producer? | autotroph |
What type of energy is released from the sun? | radiant |
What type of energy is stored in glucose? | chemical |
what is the energy transformation of photosynthesis? | radiant energy from the sun is changed into stored chemical energy in glucose |
What type of organisms are found in the first trophic level of an energy pyramid? | producers |
Where in an energy pyramid would you find the MOST available energy? | at the bottom |