Topic 7 Food Chains Flashcards
What do food chains always start with
The producer who make their own food using energy from the Sun
What is a plant biomass
The mass of living material filled with other biological molecules
What can biomass be thought of
Energy stored in a plant
How is energy transferred through living organisms in an ecosystem
When organisms eat other organisms
What are producers eaten by
Primary consumers
What are primary consumers eaten by
Secondary consumers
What are secondary consumers eat by
Tertiary consumers
What are consumers the hunt and kill all the animal called
Predators
What do the predators eat
The prey
What is the population of any species limited by
The amount of food available
What happens if the population of prey increases
The population of predators will increase
What happens if the population of a predator increases
The number of prey will decrease
Why are predator prey cycles always out of phase with each other
Because it takes a while for one population to respond to changes in another population
