Ecosystems

• What does the term biodiversity mean?

  Variety and abundance of living organisms in an ecosystem
• What does population mean?

  The number of one species living in a particular habitat
• A food chain is a simple feeding relationship, always starts with a producer
• A food web shows how a change in the population size of one species can effect others in the ecosystem
• A food web shows the relationship between different food chains
• Niche is the term used to describe the role an organism plays in an ecosystem
• All of the living organisms and the non-living components in a habitat

  Ecosystem
• Organisms which interbreed together to produce fertile offspring

  Species
• Variety and abundance of living organisms in an ecosystem

  Biodiversity
• All the organisms living in a particular habitat

  Community
• The place an organism lives

  Habitat
• The number of one species living in a particular habitat

  Population
• An organism which can makes its own food (green plants)

  Producer
• An organism which eats other organisms for energy

  Consumer
• An animal which only eats plants

  Herbivore
• An animal which only eats animals

  Carnivore
• An animal which eats animals and plants

  Omnivore
• An animal which hunts and eats other animals

  Predator
• An animal which is hunted and eaten by other animals

  Prey
• Why do organisms compete for resources

  When supply is short
• What do plants compete for

  Light, space , water, soil nutrients
• What do animals compete for

  Food, mates, shelter, water
• Intraspecific is the same species competing
• Interspecific is different species competing
• Which type is more intense - Intraspecific or Interspecific ?

  Intraspecific