B4.1.4 Flashcards
1
Q
What do food chains show
A
The flow of biomass through a community.
2
Q
What do food chains not show
A
However, they don’t show the number of organisms involved or the size of biomass transferred.
3
Q
What do pyramids of number show
A
The population at each trophic level.
4
Q
Where is the producer placed in the pyramid
A
The producer is placed at the base and it goes up by one trophic level.
5
Q
What do pyramids of biomass take into account
A
The number and also the size of the organisms present.
6
Q
How do scientists calculate dry mass
A
They kill the organism and it is then dried in a kiln
7
Q
What do you need to do when drawing a pyramid of biomass
A
Decide on a scale
