B1.5.1 - Energy in biomass Flashcards
What do we have to do in this topic?
Interpret pyramids of biomass and construct them from appropriate information
What’s the source of energy for most communities of living organisms?
The Sun
What do green plants and algae do?
They absorb a small amount of the light that reaches them and a transfer from light to chemical energy occurs during photosynthesis.
this is stored in substances that make up the cells of the plants
What happens to the lads of living material (biomass) at each stage in a food chain?
It becomes less than it was at the previous stage
How do we draw the biomass at each stage?
We draw it to scale and show it in a pyramid of biomass.
WHY are amounts of material + energy contained in the biomass of organisms reduced at each stage?
- some materials and waste energy are LOST in their FACAES
2. RESPIRATION supplies all the energy needs for living processes so this is transferred and LOST to the surroundings