B1.3 Flashcards
What is a food web?
Food chains put together
What is a producer?
An organism which makes it own food by photosynthesis
Where are all producers in terms of tropic levels?
The first tropic level
Where will herbivores be then?
Second trophic level
What is a food chain?
A continuous spell of animals eating eachother
How is energy lost at each trophic level?
Movement, heat and respiration
Why are pyramids of number and pyramids of biomass special bar charts?
Because they show how energy flows through a food web
Why are pyramids of biomass better at representing the flow of energy?
Because they take into account the mass of the organisms
What does ‘biomass’ mean?
Total mass of organisms without including water
What is a parasite?
An organism which feeds on a host organism, it lives on this organism
What is a mutalist?
An relationship between two organisms where they both benefit.
Give an example of a parasitic relationship
Flea on a dog
How do primary consumers get their food?
By eating plants
How do secondary consumers get their food?
By eating primary consumers
What do food chains show?
What eats what
