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
Ecology
Definitions, food chains, competition, relationships
| Term | Definition |
|---|---|
| Ecology definition | The study of organisms and how they interact with each other and their environment |
| Biosphere | All the parts of earth that support life. |
| Ecosystem | A unit consisting of living organisms interacting with each other and their environment |
| Habitat | The place an organism lives |
| Population | The number of organisms of a species in a habitat |
| Community | All the organisms in a habitat (different species) |
| Abiotic factors | Non-living features of an environment |
| Examples of abiotic factors | Wind Sunlight Soil Temperature Rainfall Atmosphere |
| Edaphic factors | Soil type Soil pH Soil temperature Oxygen content Water content Mineral content |
| Biotic factors | Living factors or organisms that affect organisms in a necosystem |
| 3 biotic factors | Parasites Competitors Predators |
| Primary source of energy for organisms in an ecosystem | The sun |
| Producer | Green plants Trap sunlight during photosynthesis and use the energy to make glucose (Photosynthetic autotrophs) |
| Primary consumer | Feeds on consumer |
| Secondary consumer | feeds on primary consumer |
| Decomposers consumer | Breakdown dead plants and animals |
| Detritus feeders | Eat dead plants and animals |
| Food chain | A feeding relationship with a Sequence of organisms showing the transfer of energy from on to the next |
| Grazing food chain | Starts with a live producer |
| Food web | Two or more interlinked food chains |
| Energy flow in an ecosystem | Only about 10% of energy is passed from one tropic level to the next |
| Trophic | Feeding or nutrition |
| Trophic level | Feeding level of an organism in a food chain |
| Pyramid of numbers | Shows the number of organisms at each Trophic level in a food chain |
| One problem associated with pyramid of numbers | Distorted / funny shaped pyramids can occur when the producer is large |
| Example of a distorted pyramid of numbers | Oak tree -> greenfly -> blue tits-> sparrow hawk |
| Niche | The role of an organism in its habitat |
| Reasons why the number of individuals in a population might decrease | High number of predators Disease Lack of food Emigration |
| Three reasons why population may increase | Lack of predators High reproductive rate Plenty of food |
Created by:
EObrienHart
Popular Biology sets