Year 11 Topic 7 Flashcards
What do food chains always start with
A producer
How do producers make their own food
By using energy from the sun
2 examples of producers
Green plants or algae
What do green plants and algae make
Glucose by photosynthesis
What does a plant use its glucose to make
Other biological molecules like the plants biomass
What is a plants biomass
The mass of the living material (energy stored in a plant)
What are producers eaten by
Primary consumers
What are primary consumers each by
Secondary consumers
What are consumers
Organisms that eat other organisms
What are predators
Consumers that hunt and kill other animals
What is the prey
What the predator eats
What is the population of any species usually limited by
The amount of food available
What will happen if the population of the prey increases
The population of the predators will also increase
What happens when the population of the predators increase
The number of prey will decrease
Why are predator prey cycles always out of phase
This is because it takes a while for one population to respond to changes in the other population
