4001178
Description
Flashcards by carey.april, updated more than 1 year ago
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Created by carey.april
over 8 years ago
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| Question | Answer |
| What are the 7 terrestrial biomes? | 1. Tundra (cold, treeless) 2. Taiga ( pine, spruces, larches, coniferous forests) 3. Chapperal (grassland, dry and hot) 4. Rainforest 5. Desert 6. Savanna 7. Temperate Forest |
| What is an ecosystem? | A community of populations of different species of organisms together with the physical environment on which they depend and with which they interact |
| What is a habitat? | The place where an organism lives. Provides/includes food, shelter, moisture, temperature) |
| What is an ecological niche? | The entirety of environmental factors that tend to suit and allow an animal or plant species to survive in its habitat. |
| How do we classify an ecosystem? | Can be classified based on their biotic and/or abiotic factors |
| What are the 4 ecosystem relationships that occur? | 1. Predation (predator/prey) 2. Cooperation (teamwork) 3. Competition 4. Symbiosis - Mutualism (both benefit) - Comensalism (one benefits, other unaffected) -parasitism (one benefits, other affected) |
| What is the earth's initial form of energy? | The sun |
| How do producers transform the initial energy? | Producers (such as trees and algae (autotrophs)) transform the sunlight into chemical energy through photosynthesis. |
| What is the 10% rule? | No organism ever gets all the energy from the organism they just ate. Only 10% of the energy is transferred. |
| Where does the other 90% of energy go? | Lost through... - growth and repair - reproduction -chemical work in the kidney, liver, nerve impulses -mechanical work - temperature maintianence |
| What are the trophic levels that the energy moves to/from? | |
| What is a food chain? | The energy flow from one trophic level to another.It involves one organism at each tropic level. |
| What is a food web? | The energy flow when an organism eats more than on other organism. |
| What is primary productivity? | s |
| What is an ecological pyramid? | Shows the relationship between consumers and producers at different trophic levels. Shows relative amounts of energy or matter contained at each tropic level |
| What is BIOMASS? | Total dry mass of organisms at each stage in the food chain. |
| What the difference between an ecological, fundamental and realised niche? | Ecological: organisms habitat and the way it fulfills it's role in the ecosystem Fundamental: potential region the organism would inhabit if there was no competition, predators or parasites Realised: actual niche the species inhabits |
| What is the competitive exclusion principle? | The theory that no two species can occupy the same niche for an extended amount of time. |
| Carbon Cycle | * refer to picture in book |
| Nitrogen cycle | * refer to picture in book |
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