Ecology Flashcards
What is an Ecosystem?
All the living and non living factors together in one place.
What is an enviroment?
All of the factors in a habitat which effects an organisum. These may be biotic or abiotic.
What is a population?
A number of the same species living together
What is a community?
All of the organisums that live in a given habitat together
What is a Habitat?
The geographical area obtained by that ecosystem
What is a Niche?
The role of a given species within there eco system. Its location, function, relationships and interactions with other organisums.
What is Competative Exclusion Principle?
Where two similar species do not generally within the same community as each other - forcing one to adapt or be expelled
What is a species?
A group of similar organisums which mate and produce viable and fertile offspring.
What is a food chain?
A sequence of organisums in an eco system where each is the food source for the next in the sequence.
What is a food web?
All the interconnect food chains in an eco system.
What are trophic levels?
A feeding level in a food web/chain.
What are producers?
The foundation level of the food chain/web. Normally always plants.
What is a Pyramid of numbers?
A pyramid showing the number of animals for each trophic level
What is the pyramid of Biomass?
A pyramind showing the weight/mass of each trophic level.
What is the Pyramid of Energy?
A pyramid showing the energy used at each trophic level within an eco system.