Ecological / energy pyramids Flashcards
1
Q
What do you energy pyramids represent?
A
The trophic structure of an ecosystem.
2
Q
What our energy pyramid is based on?
A
Energy losses at each transfer to a different trophic level
3
Q
What percentage of the energy entering one trophic level becomes available to organisms at the next level
A
10%
4
Q
How can energy also be released?
A
As heat/excreta
Waste material such as faeces and urine
5
Q
The base is………..then the top
A
Wider
6
Q
What does the base represent?
A
The producers
7
Q
What is the next layer above the produces represent?
A
Number of consumers at that trophic level
8
Q
As you move to the top the number of consumers…………. so the amount of energy available…………
A
Decreases
Decreases
