Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
bio unit ecology
| Question | Answer |
|---|---|
| Ecology | study of interactions between organisms and their environment |
| What level is an organism in ecological organization | lowest |
| population | a group of organisms of one species living in the same place at the same time that interbreed |
| community | several interacting populations that inhabit a common environment and are interdependent |
| Ecosystems | populations in a community and the abiotic factors with which they interact |
| biotic | all living factors or was once living |
| abiotic | nonliving |
| habitat | where an organism lives |
| niche | the role the organism plays- food it eats where it live reproduction, and relationships with other species |
| energy flows | in one direction |
| trophic level | each step in a food chain or food web |
| first trophic level | producers |
| second, third, or higher trophic level | consumers |
| food chain | shows the path of energy from one organism to another |
| food web | a group of interconnected food chains |
| ecological pyramid | food chains/webs can be written as a pyramid with consumers on the higher levels and producers as the base |
| energy pyramid | diagram in which each trophic level is represented by a block stacked starting with lowest trophic level at the bottom. |
| how much energy goes to the next trophic level | 10% |
| pyramid of numbers | shows the total number of individual organisms at each level in the food chain of an ecosystem |
| biomass pyramids | biomass refers to the total mass of all living or organic matter that inhabit an ecosystem |
| types of biomass pyramids | inverted and upright |
| Ecosystem stability | balance among the biotic and abiotic factors of an ecosystem. |
| ecological disturbance | an event that throws off the stability of an ecosystem |
| biotic disturbance | a new species disrupts a food chain, could be a disease killing many animals, urban development by humans |
| abiotic disturbances | natural disasters, flooding, erosion, sudden increase or decrease in resources needed for life |
| resilience | the ability to bounce back from disturbance more resilient, more likely to reestablish |
| resilience factors | natural cycles, succession, biodiversity |
| Nitrogen fixation -Cycles of nature(being a resilience factor) | bacteria that live on the roots of plants convert nitrogen gas into a usable solid form. |
| Denitrification -Cycles of nature (being a resilience factor) | bacteria in the soil break down solid nitrogen forms to form gas. |
| Succession | Processes of change in the species structure of an ecological community over time |
| Primary Succession | Building a community from scratch |
| Secondary Succesion | Rebuilding a community after a disturbance |
| Climax Community | When living things of a community have reached their final stage of succesion. |
| Biodiversity | Variety of species living in an atmosphere |
| Elements needed for life | hydrogen oxygen phosphorus nitrogen and sufur |
| Water cycle | Repeated movement of water between the Earth's atmosphere and surface |
| Carbon Cycle |
Created by:
kita2448