Key Area 4: Energy in Ecosystens Flashcards
How is energy lost in a food chain?
Heat, Movement, Undigested waste
What happens to energy that isn’t lost
It goes to the consumer
How much energy is passed on?
10%
What does a food chain always start with?
Producer
What do the arrows in a food chain represent?
The direction of energy transfer
What is another way to represent a food chain?
A pyramid
What is a pyramid of energy?
The total quantity of energy stored in organisms at each level of the food chain?
What is energy measured in?
kJ (kilojoules)
What stage in the food chain stores the most energy?
Producers
What is a pyramid of numbers?
It shows the number of organisms present in the food chain at each level
Why would a pyramid of numbers be an irregular shape?
There is 1 large producer
There is a parasite
What is a food web?
The feeding relationship between a number of interconnected food chains
Where is a producer in a pyramid?
Bottom layer
Where is the primary consumer in a pyramid?
The 2nd layer
What energy is passed on in a food chain?
Growth
