Ecology and Population Ecology

An organism that produces its own food supply from inorganic compounds is called a(an)

• heterotroph
• consumer
• detritivore
• autotroph

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What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

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What is the term for each step in the transfer of energy and matter within a biological community?

• energy path
• food web
• trophic level
• food pyramid

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What is an heterotroph? 

• An organism that can produce its own form of energy (via the Sun) 
• An organism that consumes only plants for energy
• Various organisms that consume other organisms for energy
• An organism that decomposes other organisms 

What is the major difference between a community and an ecosystem?

• A community involves only the biotic, not the abiotic

• An ecosystem only includes herbivores and carnivores-- no decomposers

• An ecosystem involves the biotic, AND THE abiotic

• An ecosystem is just a larger community

What are the major differences between a species and a population? 

• Populations consist of ALL of the individual organisms within a species in a given area/ecosystem that are fertile
• Populations are a collection of many different types of species that are not related to each other
• Populations are just a larger amount of individuals
• Populations are the number of individuals within a species that are identical 

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What are the plants in this picture? 

• Heterotrophs 
• Autotrophs
• Carnivores 
• Herbivores 

Different populations living and interacting with each other in the same area

• Biome
• Ecosystem
• Community
• Niche

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Organisms that look similar and can produce fertile offspring

• Species
• Fish
• Community
• Trees

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The study of how living things interact with one another and with their environment.

• Biology
• Lithology
• Ecology
• Farmacology

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