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Chapter 18 Ecology
| Question | Answer |
|---|---|
| any biotic or abotic factor that restricts the size of a population | limiting factor |
| the largest number of individuals that a population can support for a long period of time | carrying capacity |
| name the four main ways that organisms can interact with each other in an ecosystem | competition, predator/prey, symbiosis, coevolution |
| Name the three types of symbiotic relationships | mutualism, commensalism, parasitism |
| what is a habitat | where an organism lives |
| What is a niche | the organisms role that it plays in its ecosystem |
| eneergy flow through the environment in the form of what? | food chains |
| when looking at the ecological (energy) pyramid, what percent of energy due organisms gain as they eat organisms directly below them? | ONLY 10 % - 90 % of the energy is lost |
| How many links should a food chain have? | 3-5 links |
| What are the three ways that organisms can get their energy? ( Think of HOW they do this ) | Consumer, producer, decomposer |
| What is a producer? | An organism that makes their food through the process of photosynthesis |
| What is a consumer? | An organism that gets their energy by eating other organisms |
| What is a decomposer? | An organism that gets their energy by breaking down dead or decaying organisms |
| What is a parastic relationship? | When one organism is harmed by the interaction and the other organism benefits from the interaction |
| What is mutualism? | When both organisms is benefit from the interaction |
| What is commensalism? | When one organism benefits from the interaction and the other organism is not effected from the interaction |
| What are the five levels of biological organization starting with the most simple? | organism, population, community, ecosystem, and biosphere |
| What is the part of the Earth that supports all living organisms? | biosphere |
| What is the definition of a biotic factor? | A factor that is living or was once living (and still in its natural environment) |
| What is the definition of an abiotic factor? | A factor that is nonliving or was never alive |
| What is a population? | a group of the same species of living organisms that can reproduce together |
| What is an ecosystem? | a community of organisms that are interacting with their abiotic and biotic factors in their environment |
| What is a community? | a population of the same species interacting with other populations of species |
| Name three types of consumers? | Herbivore, carrnviore, omnivore |
| What is an herbivore? | organism that eats only plants |
| What is a carnivore? | organism that eats only meat ( animals) |
| What is an omnivore? | organism that eachs both plants and animals |
| What is a food chains? | a pathway of the flow of energy (or transfer of energy) between organisms |
| What is a food web? | A series of overlapping food chains |
| What type of organism must always be found at the bottom of the food chain and energy pyramid? | Producers |
| What does a producer need to make its energy? | sun light, water, and CO2 |
| What is the main source of energy for all living things? | the sun |
| What is ecology? | the study of interactions that take place between organisms their abiotic factors |
| What part of the energy pyramid had the most energy? | the BOTTOM |
Created by:
mlugerner