4.2 Energy Flow Flashcards
1
Q
Food chain
A
Arrows show direction of energy flow
2
Q
Producers
A
Photosynthesise to store energy as glucose.
Glucose used for cell respiration
3
Q
Photosynthesis equation
A
4
Q
What happens to the energy after primary producers use it?
A
Lost as heat
5
Q
Heat
A
Produced as energy when carbon compounds are used by organisms. Released into atmosphere as it cannot be used.
5
Q
Levels of the food chain
A
Trophic levels
6
Q
Energy and nutrients in the food chain
A
- Energy flows through an ecosystem
- Nutrients are recycled
6
Q
Energy loss through trophic levels
A
- Only 10% of energy is passed onto the next trophic level
- When drawing –> each level is 1/5 smaller than the one below
7
Q
Trophic level names
A
- Producers
- Primary Consumers
- Secondary Consumers
- Tertiary Consumers
8
Q
What does a pyramid of energy show (6 Mark)
A
