Unit 3.1 Flashcards
Species
A group of similar organisms which can interbreed produce a fertile offspring
What is Biodiversity
The variety of species living in a habitat
Population
All the organisms of one species in a habitat
Producer
Organisms which produce their own food e.g plants
Consumer
Organisms which rely on eating other organisms for food
Define a Carnivore
An organism that eats animals
Define a Herbivore
An organism that eats plants
Define a Omnivore
An organism that eats both plants and animals
Define a Predator
An organism that hunts for food
Define a prey
An organism which is hunted
What is a food chain?
The feeding relationship between a producer and a top consumer
What is a food web?
A network of interconnected food chains in a habitat
What is an ecosystem?
An ecosystem is all the organisms (community) living in a habitat and the non-living components with which the organisms interact (the abiotic factors)
What is a niche?
The role an organism plays within its community
A niche describes..
- The resources the organism uses in an ecosystem (light, nutrient availability)
- The interaction an organism has in the community (competition, predation)
3.The conditions it can tolerate (temperature)
What is interspecific competition?
Interspecific competition is when individuals of different species compete for one or a few of the resources they require
What is Intraspecific competition?
When individuals of the same species compete for all the resources they require (more intense)
What are the four things that plants compete for?
Light, space, water, mineral ions/soil nutrients
What are the three things that animals compete for?
Food, mates, territory
Define ‘community’.
A group of interdependent organisms containing different species
Secondary consumers may be eaten by…?
Tertiary consumers
What are secondary consumers? Give an example.
Animals that eat primary consumers - Any carnivores (eg. lions, foxes, eagles)
What are primary consumers? Give an example.
Animals that eat producers - Any herbivores (eg. cows, sheep, rabbits)
What is a tertiary consumer?
An organism which eats a secondary consumer
