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Questions and Answers
What is the primary reason for the limited energy available for higher trophic levels in an ecosystem?
What is the primary reason for the limited energy available for higher trophic levels in an ecosystem?
- Inefficient energy transfer
- Energy lost as heat during metabolic processes
- Energy used for growth, reproduction, and other life processes
- All of the above (correct)
Which process is primarily carried out by certain bacteria in soil or in symbiotic relationships with plants?
Which process is primarily carried out by certain bacteria in soil or in symbiotic relationships with plants?
- Nitrogen fixation (correct)
- Phosphorus cycling
- Competitive exclusion
- Mutualism
What is the term for the role or function of an organism within its ecosystem?
What is the term for the role or function of an organism within its ecosystem?
- Trophic level
- Ecological interaction
- Niche (correct)
- Habitat
What is the principle that states two species competing for the same limited resources cannot coexist indefinitely?
What is the principle that states two species competing for the same limited resources cannot coexist indefinitely?
What is the term for the movement of phosphate ions through the lithosphere, hydrosphere, and biosphere?
What is the term for the movement of phosphate ions through the lithosphere, hydrosphere, and biosphere?
What is the result of changes in one population or species in an ecosystem?
What is the result of changes in one population or species in an ecosystem?
What is the primary function of trophic levels in an ecosystem?
What is the primary function of trophic levels in an ecosystem?
What percentage of energy is transferred to the next trophic level?
What percentage of energy is transferred to the next trophic level?
What type of organism obtains organic molecules by consuming other organisms?
What type of organism obtains organic molecules by consuming other organisms?
What do ecological pyramids represent?
What do ecological pyramids represent?
What is the primary difference between autotrophs and heterotrophs?
What is the primary difference between autotrophs and heterotrophs?
What is the term for organisms that produce their own organic molecules from inorganic sources?
What is the term for organisms that produce their own organic molecules from inorganic sources?
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