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Chapter 17
PBSC Ecosystems & Communities BSC1005 259323 CONCEPTS IN BIOLOGY
| Question | Answer |
|---|---|
| ______ competition is when members of the same species compete for the same resource. | Intraspecific |
| This principle states that complete competitors cannot coexist and one specie will be forced out. | Competitive Exclusion Principle |
| ____ energy is the ultimate source of all energy on earth. | Solar |
| These are organisms that get their food from eating the plants directly or by eating herbivores. | Consumers |
| In the carbon cycle, carbon is ABSORBED from the atmosphere through _____. | Photosynthesis |
| These are plant eaters. | Herbivores |
| ______ competition is when members of different species compete for the same resource. | Interspecific |
| This is another way to say living and non-living portions of the ecosystem. | Biotic and Abiotic |
| This occurs as a consequence of natural selection when organisms change in reponse to their environment. | Coevolution |
| Phosphorus leaches from ____ over long periods of time and gets incorporated by plants into molecules. | Rocks |
| This is the "job" of the organism. | Niche |
| These are organisms which consume letter, debris or dung. | Detritivores |
| This is another term for symbiosis. | Mutualism |
| Food chains which are interconnected, showing alternative food sources for organisms | Food web |
| Name the "big 6" elements which form the building blocks of life. | C,H,O,N,P,S |
| These are organisms that eat herbivores. | Carinvores |
| This is a (+/-) interaction where one member benefits and the other is harmed. | Predation |
| Anything that takes up space and has mass. | Matter |
| The place or set of environmental conditions in which an organism lives. | Habitat |
| The water portion of our planet is collectively called the _____. | Hydrosphere |
| Rocks and soil make up the _____. | Lithosphere |
| The plants and animals which occupy our world. | Biota |
| _____ symbionts benefit from their association but they can survive when separated. | Facultative |
| These are photosynthesizing plants or algae which use the sun's energy to make their own food. | Primary Producers |
| A linked feeding series showing who eats whom in a community. | Food Chains |
| This association between organisms occurs when one benefits and the other is unaffected. | Commensalism |
| This is the amount of biomass produced in a given area in a given time by photosynthetic organisms. | Primary Productivity |
| These organisms eat both plants and herbivores. | Omnivores |
| The _____ is defined as the community and its habitat. | Ecosystem |
| The gaseous layers surrounding our planet. | Atmosphere |
| Where two or more species live in very close association and both benefit from the association. | Symbiosis |
| This is defined as the capacity to do work and to move matter. | Energy |
| _____ is the method that phosphorus is returned to the environment. | Decomposition |
| Name all 4 major reservoirs through which chemicals can cycle in an ecosystem. | Atmosphere, Hydrosphere, Lithosphere, Biota |
| This is the term for living things in a given area that are all the SAME species. | Population |
| Which biogeochemical cycle does NOT have an atmospheric component? | Phosphorus Cycle |
| This specific type of predation occurs when the member benefitted is feeding/living on or in the host organism. | Parasitism |
| In the carbon cycle, how is carbon released back INTO the atmosphere? | Combustion and respiration |
| _____ symbionts cannot survive without the other organism in the relationship. | Obligate |
| _____ levels are an organism's feeding status within an ecosystem. | Trophic |
| These are bacteria or fungi that break complex organic material down into smaller molecules. | Decomposers |
| The set of species interacting within the ecosystem. | Community |
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callen-pbsc
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