B1.5.1 - Energy in biomass

Question 1

What do we have to do in this topic?

Answer 1

Interpret pyramids of biomass and construct them from appropriate information

Question 2

What’s the source of energy for most communities of living organisms?

Answer 2

The Sun

Question 3

What do green plants and algae do?

Answer 3

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

Question 4

What happens to the lads of living material (biomass) at each stage in a food chain?

Answer 4

It becomes less than it was at the previous stage

Question 5

How do we draw the biomass at each stage?

Answer 5

We draw it to scale and show it in a pyramid of biomass.

Question 6

WHY are amounts of material + energy contained in the biomass of organisms reduced at each stage?

Answer 6

1. 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