Energy And Biomass In Food Chains Flashcards
1
Q
What do we find out by observing numbers and sizes of organisms in food chains?
A
What happens to energy and biomass as it passes along food chains
2
Q
Draw an example of a biomass pyramid
A
\_\_
_|_|_ Sparrowhawk
\_\_|\_\_\_|\_\_ Blue tit
\_\_|\_\_\_\_\_\_\_\_|\_\_ Catapillars
|\_\_\_\_\_\_\_\_\_\_\_\_\_| Oak tree
3
Q
What is the source of energy for most living organisms?
A
Radiation from the sun
4
Q
…… …… and …… aboard a small amount of light that reaches them
A
Green plants
Algae
5
Q
What happens during photosynthesis?
A
The light energy is transferred to chemical energy
6
Q
Where is chemical energy stored?
A
In substances that make up cells of plants
7
Q
What happens to the biomass at each stage in the food chain?
A
It becomes less than at the previous stage
8
Q
Why is the amount of biomass reduced at each stage?
A
- Some materials and energy are always lost in waste materials
- Respiration supplies all the energy for life processes including movement, much of this energy is eventually transferred into the surroundings
