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Ecology Review
| Question | Answer |
|---|---|
| 90% | this much energy at trophic level is used for life processes and lost as heat |
| 10% | this much energy makes it to the next trophic level |
| photosynthesis | process using sunlight to make carbohydrates |
| chemosynthesis | process using chemicals to make carbohydrates |
| producers | make their own food |
| omnivore | eats other plants and animals |
| carnivores | kill and eat other organisms |
| herbivore | only eats plants |
| biomagnification | the accumulation of pesticides, toxins, or pollutants in an ecosystem |
| top level consumers | is most affected by biomagnification |
| food chain | a simple 1-way transfer of energy from those eating and being eaten |
| food web | a complex network of feeding interactions within an ecosystem |
| population | a group of many members of the same species in the same area |
| species | organisms that are able to reproduce and have fertile offspring |
| biosphere | planet Earth ---where life exists |
| biome | a group of ecosystems with similar organisms and similar climates |
| habitat | where an organism lives |
| competitve exclusion principle | says 2 species cannot occupy the same niche in same habitat at the same time |
| mutualism | relationship where both organisms benefit |
| commensalism | relationship where 1 organism benefits and the other is not helped or harmed |
| predation | relationship where 1 organism is hunted and eaten by the other |
| parasititsm | relationship where 1 benefits and the other is harmed |
| competition | when organisms of the same or different speices fight for the same limited resources |
| food, shelter, territory, mates | things organisms compete for |
| competition | relationship where organisms are fighting for the same resources |
| niche | what an organism does to survive or reproduce where it lives |
| prey | this organism is hunted and killed by the predator |
| symbiosis | general name for relationship when organisms live close to each other |
| biomass | all of the living tissue that is available at each trophic level |
| host | organism unintentionally harmed by parasite |
| deaths and emigration | 2 things that causes population size to decrease |
| births and immigration | 2 things that cause population size to increase |
| exponential growth | population growth that is constant ; not slowing down |
| logistical growth | population growth that slows down & stops |
| carrying capacity | the max number of individuals an area can support |
| secondary succession | succession where there is soil (faster) |
| primary succession | succession where there is NO soil (slowest) |
| pioneering species | species that is first to area to make a new soil |
Created by:
cadetjt
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