Flashcards
Ecosystems
Cards in this deck (20)
- 1What 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 - 2What 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
- 3What is a habitat?The place where an organism lives.
Provides/includes food, shelter, moisture, temperature) - 4What 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.
- 5How do we classify an ecosystem?Can be classified based on their biotic and/or abiotic factors
- 6What 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) - 7What is the earth's initial form of energy?The sun
- 8How do producers transform the initial energy?Producers (such as trees and algae (autotrophs)) transform the sunlight into chemical energy through photosynthesis.
- 9What is the 10% rule?No organism ever gets all the energy from the organism they just ate.
Only 10% of the energy is transferred. - 10Where 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 - 11What are the trophic levels that the energy moves to/from?
- 12What is a food chain?The energy flow from one trophic level to another.It involves one organism at each tropic level.
- 13What is a food web?The energy flow when an organism eats more than on other organism.
- 14What is primary productivity?s
- 15What 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 - 16What is BIOMASS?Total dry mass of organisms at each stage in the food chain.
- 17What 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 - 18What is the competitive exclusion principle?The theory that no two species can occupy the same niche for an extended amount of time.
- 19Carbon Cycle* refer to picture in book
- 20Nitrogen cycle* refer to picture in book
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- Western Australian Certificate of Education (WACE) Biology Flashcards on Ecosystems, created by carey.april on 10/11/2015.
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- carey.april
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