B1.5.1 - Energy in biomass Flashcards

1
Q

What do we have to do in this topic?

A

Interpret pyramids of biomass and construct them from appropriate information

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2
Q

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

A

The Sun

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3
Q

What do green plants and algae do?

A

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

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4
Q

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

A

It becomes less than it was at the previous stage

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5
Q

How do we draw the biomass at each stage?

A

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

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6
Q

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

A
  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

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